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Número de publicaciónCN103851257 B
Tipo de publicaciónConcesión
Número de solicitudCN 201410099997
Fecha de publicación28 Oct 2015
Fecha de presentación18 Mar 2014
Fecha de prioridad18 Mar 2014
También publicado comoCN103851257A
Número de publicación201410099997.0, CN 103851257 B, CN 103851257B, CN 201410099997, CN-B-103851257, CN103851257 B, CN103851257B, CN201410099997, CN201410099997.0
Inventores陈刚
Solicitante国家电网公司, 国网四川省电力公司泸州供电公司
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Enlaces externos:  SIPO, Espacenet
基于对电缆排管敷设中的托管施工工艺 Based on the cable discharge pipe laying construction technology of hosting traducido del chino
CN 103851257 B
Resumen  traducido del chino
本发明公开了一种基于对电缆排管敷设中的托管施工工艺,包括以下步骤,测量放线、挖掘基坑、钻机钻进、回拉扩孔、管道焊接、回拉敷设管道、基坑回填。 The present invention discloses a method based on the construction technology of cable discharge pipe laying in custody, including the following steps, Surveying, mining excavation, drilling rig, pull back reaming, pipe welding, pull back the laying of pipelines, excavation backfill . 该工艺能够有效地对托管进行施工,施工周期短,施工质量好,解决了现有施工方法常常造成管道出现破裂或者线路无法施工的问题。 The process can be effectively hosted for construction, short construction period, good construction quality, to solve the existing construction methods often can not cause rupture or line pipe construction problems.
Reclamaciones(1)  traducido del chino
1.基于对电缆排管敷设中的托管施工工艺,其特征在于,包括w下步骤: (a) 、测量放线:(1)、平面控制及放线:依据现有边线,通过预知的控制点引测本工程的定位点,施工前通过全站仪沿地面上拉管的中屯、线每3米设置一粧,并沿拉管的中屯、线撒好白灰线且测出粧高程,算好粧高程与设计拉管流水面的关系; (2)、高程控制:根据预知的水准点引测施工现场的高程控制点,高程控制采用两次仪器高程前后视等距测法,保持精度,为保证设计方向、位置的正确性,控制线的传递用经缔仪进行引测,保证平面位置的准确; (b) 、挖掘基坑:每段牵引需要挖掘2个工作坑,包括入口工作坑、出口工作坑,均采用机械挖掘,根据需要采用密扣钢板粧支护,入口工作坑开挖尺寸为3m宽X10m长、出口工作坑尺寸为3mX5m,工作坑深度根据拉管流水面高程确定,出口工作坑是回拖时提供排水管入桐工作坑,出口工作坑尺寸和施工方法与入口工作坑相同,为保证工作坑内干燥和扩孔施工,在工作坑南侧设4m宽X1. 5m长X1. 5m深泥浆沉淀池,并在池底设泥浆累随时将多余泥浆抽出坑外; (C)、钻机钻进:钻机运到现场先错固稳定,钻机是依靠地错座和后支承与地基固定的, 安放钻机前应先平整场地,根据预先设计的钻机倾斜角度进行调整,依靠钻机动力将错杆打入±中,使后支承和前底座错与地层固结稳定,采用精度为0. 1%的导向雷达控制钻进标高,导向标高控制在管中屯、线位置,钻杆轨迹的第一段是造斜段,控制钻杆的入射角度和钻头斜面的方向,缓慢给进而不旋转钻头,就能使钻头按设计的造斜段钻进, 造斜段距离L: 有三湊聽麵轉f::'敢钻杆入射角a: 底,敲餐式f龜链麵:-錄雜I 式中:h-埋深,Ri-造斜段曲率半径钻头到达造斜段完成处,接下来的是排水管流水段的钻进; (d) 、回拉扩孔:控制钻头按照预定的方向绕过地下障碍物直达目的地,然后卸下钻头换装适当尺寸和特殊类型的回程扩大器,使之能够在拉回钻杆的同时将钻孔扩大至所需直径,采用若干次扩径,第一次扩孔为300mm,第二次扩孔为500mm,如此类推,扩孔到管径的1. 5 倍; (e) 、管道焊接:管道焊接采用电烙连接和热烙连接,热烙对接连接,两管段应各伸出卡具一定的自由长度,校对连接件,使其在同一轴线上,错边不宜大于壁厚的10%,加热板溫度适宜220±1(TC,当指示灯亮时,等10分钟使用,W使整个加热板溫度均匀; (f) 、回拉敷设管道:管材焊缝和管道强度检验合格后,用现场制作的"管材封套"将管头密封,然后在管头后端接上回扩头,管后接上分动器进行接管,将管子回接到工作井后, 卸下回扩头、分动器、取出剩余钻杆,堵上封堵头,进行水压试验;扩孔成功到要求后,在回拖前要进行管线连接的工序,用热烙法将双壁缠绕管连接成与成孔长度相当的管道,将管道与扩孔器相连,回拉将管道牵引进孔桐内; (g) 、基坑回填:托管施工完工后,进行±方回填,W机械为主,人工配合,分层回填,每层厚度为30cm,并进行巧实,回填到距离地面0. 5米时,采用S屯灰±回填,回填的高度与主体道路路面高程吻合。 1. Based on the construction technology of cable discharge pipe laying in hosting, characterized in that it comprises at w steps: (a), measured actinomycetes: (1) control plane and put the line: According to existing threads, through predictable control measuring point lead anchor point for this project, before construction total stations along the ground by the trombone in the village, set up a line of makeup every three meters, and sprinkle lime good trombone in Tuen along the line, the line and the measured elevation makeup , considered a good relationship with the design trombone makeup elevation of the water surface; (2), elevation control: According to the standard height control points measured predictable point lead the construction site, the elevation control using two instruments before and after the elevation measurement method depends on equidistance, holding precision, to ensure the design direction, accuracy, control lines passing through association with the position measuring instrument lead, ensure accurate location of the plane; (b), digging pit: each work traction need to dig two pits, including entrance Working pit, pit exit work, both mechanical mining, as the case requires close support buckle steel makeup, entrance excavation work pit size is 3m wide X10m long, export of pit size is 3mX5m, work pit depth of water surface elevation based on trombone OK, export work is to provide drainage pit pit when the Tong work pullback, export of pit size and construction methods with the same entrance pit work, in order to ensure work pit drying and reaming construction pit at the south side of 4m working width X1. 5m long X1 5m deep mud settling ponds, and mud accumulated at any time provided the excess mud out of the pit in the bottom of the outer; (C), drilling rigs: Rig transported to the site to the wrong solid stability, drilling rig is wrong to rely on the seat and back support and fixed ground, placed the rig should be preceded by leveling the ground, according to pre-designed rig inclination adjustment, relying on drill rod into ± in the wrong, and after the supporting base error before consolidation and formation stability, with precision to 0.1% of the guide radar control drilling elevation, elevation control-oriented village in the tube, line position, the first paragraph is whipstocking drill track section, control the drill pipe and drill the slope angle of incidence direction, slow to Further non-rotating drill bit, drill press can make the design of the drilling curve section, whipstocking distance L: There are three Minato listen face turn f :: 'dare drill incident angle a: at the end, knocking food chain type f turtle face: - Miscellaneous I recorded the formula: h- depth, Ri- radius of curvature of the drill section whipstocking arrive at the kickoff of the completion of the next stage is drilling drainage water; (d), pull back reaming: control drill bypassing the obstacle in a predetermined direction underground direct destinations, and then remove the drill and dress appropriately sized special type of return amplifier, so that it can at the same time back drill will be expanded to the desired diameter drilling, using a number of times enlarged diameter, first reaming of 300mm, second reaming of 500mm, and so on, reaming to 1.5 times diameter; (e), pipe welding: Pipeline welding using electrocautery connection and hot branding connection, hot baked docking connector, two pipe sections should each extending the length of the jig some freedom, proofreading connectors, make it the same axis, the wrong side of not more than 10% of the wall thickness, the heating plate temperature suitable for 220 ± 1 (TC When the light is on, wait 10 minutes to use, W of the entire heating plate temperature uniformity; (f), pull back the laying of pipes: after passing the test tube and pipe weld strength, with on-site production of "pipe envelope" of the tube head seals and then connected to the rear end of the ferrule after backreaming head tube connected after splitter takes over, the tube wells tied back to work, remove the back expansion head, splitter, remove the remaining drill, plug seal plug, pressure test; reaming success to request, before the pullback to the step pipeline connection method branded with a hot double-walled spiral pipe connected with the considerable length of pipe into the hole, the pipe and reamer connected, pull back into the hole inside the pipe traction Tong; (g), pit backfill: After hosting the completion of construction, backfilling of ± square, W machinery, artificial, layered backfill, each having a thickness of 30cm, and be real clever, backfill to 0.5 meters from the ground, the use of S Tuen gray ± backfill, height and body road surface elevation backfill agreement.
Descripción  traducido del chino
基于对电缆排管敷设中的托管施工工艺 Based on the cable discharge pipe laying construction technology of hosting

技术领域 TECHNICAL FIELD

[0001] 本发明涉及一种施工工艺,具体是涉及一种基于对电缆排管敷设中的托管施工工艺,属于电力施工领域。 [0001] The present invention relates to a construction technology, in particular to the field of electric power construction based on the construction technology of cable laying in the exhaust pipe hosted belong.

背景技术 Background technique

[0002] 电力是以电能作为动力的能源。 [0002] Power is electricity powered energy. 发明于19世纪70年代,电力的发明和应用掀起了第二次工业化高潮。 Invented in the 1870s, the invention and application of power set off a second industrial climax. 成为人类历史18世纪以来,世界发生的三次科技革命之一,从此科技改变了人们的生活。 The history of mankind since the 18th century, one of the world's scientific and technological revolution occurred three times, since technology is changing people's lives. 即使是当今的互联网时代我们仍然对电力有着持续增长的需求, 因为我们发明了电脑、家电等更多使用电力的产品。 Even today's Internet age we still have a growing demand for electricity, because we invented computers, home appliances and other products use more power. 不可否认新技术的不断出现使得电力成为人们的必需品。 Admittedly continual emergence of new technologies makes electricity become a necessity. 20世纪出现的大规模电力系统是人类工程科学史上最重要的成就之一,是由发电、输电、变电、配电和用电等环节组成的电力生产与消费系统。 Large-scale power system in the 20th century is one of the most important achievements in the history of human engineering science, electricity production and consumption system consists of power generation, transmission, substation, distribution, electricity and other aspects of the composition. 当今是互联网的时代,我们仍然对电力有着持续增长的需求,因为我们发明了电脑、家电等更多使用电力的产品。 Today is the era of the Internet, we still have a growing demand for electricity, because we invented computers, home appliances and other products use more power. 电力的输送需要铺设线路,一般是采用地底输送和高空输送,高空输送需要架设支撑架,其工程复杂,而且对地质要求很高,因而一般是采用地底埋设管道的方式进行电力输送,而地底埋设管道需要考虑地质对管道的影响,传统施工方法由于没有考虑这些因素,常常造成管道出现破裂或者线路无法施工的问题。 Transmission of electricity needs in lines, generally used ground transport and aerial transport, aerial transport need to set up the support frame, its engineering complex and geological demanding, which generally is by way of underground buried pipelines for power supply, and the ground is buried pipes need to consider the impact of geology on the pipeline, the traditional construction methods because there is no consideration of these factors, often can not cause rupture or line pipe construction problems.

发明内容 SUMMARY OF THE INVENTION

[0003] 本发明的目的在于克服上述现有施工方法常常造成管道出现破裂或者线路无法施工的问题,设计了一种基于对电缆排管敷设中的托管施工工艺,该工艺能够有效地对托管进行施工,解决了现有施工方法常常造成管道出现破裂或者线路无法施工的问题。 [0003] The object of the present invention is to overcome the above conventional construction methods are often caused by a pipe break or problem appeared unable construction line, designed based on the construction technology of cable discharge pipe laying in custody, the process can be effectively hosted existing construction can solve the often cause rupture or line pipes unable construction problems.

[0004] 本发明的目的通过下述技术方案实现:基于对电缆排管敷设中的托管施工工艺, 包括以下步骤: [0004] The object of the present invention is realized by the following technical solutions: Based on the construction technology of cable discharge pipe laying in hosting includes the following steps:

[0005] 测量放线:平面控制及放线:依据现有边线,通过勘测方提供的控制点引测本工程的定位点,为保证施工各阶段控制点网,坐标及高程的准确,首先对施工现场内各控制粧加以保护。 [0005] Surveying: Print control and discharge line: According to existing threads, survey control points provided by the party cited measuring anchor point of this project, to ensure the construction of the various stages of network control point coordinates and elevation of accurate, first Each control makeup to be protected within the construction site. 并把各控制点引测至现场外加以保护,以便竖向引测放线。 And to measure the control points lead to off-site to be protected in order to measure the vertical lead actinomycetes. 同时要做闭合校核。 At the same time do the closing check. 施工前通过全站仪沿地面上拉管的中心线每3米设置一粧,并沿拉管的中心线撒好白灰线且测出粧高程,算好粧高程与设计拉管流水面的关系; Before construction total stations set up along the ground through the center line of each three meters a trombone makeup, and sprinkle lime good line along the center line of trombone and makeup measured elevation, considered a good makeup water surface elevation and design trombone relationship ;

[0006] 高程控制:根据勘测方提供的水准点引测施工现场的高程控制点,高程控制采用两次仪器高程前后视等距测法,保持精度,为保证设计方向、位置的正确性,控制线的传递用经炜仪进行引测,保证平面位置的准确; [0006] Vertical Control: According to the standard survey control points provided by the elevation measurement point lead the construction site, the elevation control using two instruments before and after, as the equidistant elevation measurement method, to maintain accuracy, to ensure the design direction, position accuracy, control pass line with by Wei instrument lead measurement, ensure accurate location of the plane;

[0007] 挖掘基坑:每段牵引需要挖掘2个工作坑,包括入口工作坑、出口工作坑,均采用机械挖掘,根据需要采用密扣钢板粧支护,入口工作坑开挖尺寸为3m宽XlOm长、出口工作坑尺寸为3mX5m,工作坑深度根据拉管流水面高程确定,出口工作坑是回拖时提供排水管入洞工作坑,出口工作坑尺寸和施工方法与入口工作坑相同,为保证工作坑内干燥和扩孔施工,在工作坑南侧设(4m宽XI. 5m长XI. 5m深)泥浆沉淀池,并在池底设泥浆栗随时将多余泥浆抽出坑外,施工工序为:打钢板粧支护一挖土一清运余泥一工作坑围蔽,人工挖泥过程注意不要损坏人行道的地下管线; [0007] Mining Pit: each work traction need to dig two pits, including the work of the pit entrance, exit pit work, both mechanical mining, as the case requires close support buckle steel makeup, entrance excavation work pit size is 3m wide XlOm long, export of pit size is 3mX5m, work pit depth of water surface elevation is determined based on trombone, export work is to provide a drain hole in the hole when working pit pullback, export of pit size and construction methods with the same pit entry work for ensure work pit drying and reaming construction pit at the south side of the work (4m width XI 5m length XI 5m deep.) mud sedimentation tank, located in the bottom mud and chestnut withdrawn at any time the excess mud pit, the construction process is: playing a supporting plate makeup removal Yuni a job digging a pit enclosed, artificial dredging process is careful not to damage the sidewalk of underground pipelines;

[0008] 钻机钻进:钻机运到现场必须先锚固稳定,钻机如果锚固不稳,将会发生功率损失或者功率作用在机器身上,造成机器和人的伤害。 [0008] The drilling rig: Rig transported to the site must be stable anchoring, anchoring unstable if the rig, power loss or power effect will occur in the machine body, causing the machine and injury to persons. 钻机是依靠地锚座和后支承与地基固定的,安放钻机前应先平整场地,根据预先设计的钻机倾斜角度进行调整,依靠钻机动力将锚杆打入土中,使后支承和前底座锚与地层固结稳定。 Rig relies anchor seat and rear support and foundation fixed, placed the rig should be preceded by leveling the ground and be adjusted according to the inclination angle of the pre-designed rig, relying drill will bolt into the soil, so that the front and rear support base anchor Consolidation of stability with the formation.

[0009] 钻机就位后,调整钻机导向杆到略高于设计管位中心高程的位置,水平钻入土中。 After the [0009] rig in place, the guide bar to slightly adjust the rig design elevation of the position of the center tube position, horizontal drill into the earth. 在导向钻头中安装发射器,通过地面接收器,测得钻头的深度、鸭嘴板的面向角、钻孔顶角、 钻头温度和电池状况等参数,将测得参数与钻孔轨迹进行对比,以便及时纠正。 Mounted on the guide drill transmitters, receivers through the ground, measured the depth of the drill, angle facing duckbill plates, angle drill, drill parameters such as temperature and battery condition, the measured parameters were compared with the borehole trajectory, in order to be corrected. 地面接收器具有显示与发射功能,将接收到的孔底信息无线传送至钻机的接收器并显示,操作手根据信号反馈操纵钻机按正确的轨迹钻进。 Bottom of the hole information wireless terrestrial receiver has a display and launch function, the received transmission to the receiver and displays the rig, the drilling operator in the correct track according to the feedback signal manipulation rig. 在导向钻孔过程中技术人员根据探测器所发回的信号,判断导向头位置与钻进路线图的偏差,随时调整。 Guide the drilling process in the art based on the detector signal is sent back to determine head position and orientation bias drilling roadmap, at any time to adjust. 并把调整数值记录在"钻进位置"相应的表格中。 And to adjust the value recorded in "drilling position" corresponding tables. 为了保证导向头能严格按照操作人员发出的指令前进,需要在管道线路初步布点后对控制点进行加密加细。 To ensure the guide head can be in strict accordance with instructions issued by the operator advance, is required after the initial distribution pipeline route control points encryption plus fine. 间隔3m设中线、高程控制点,用木粧做出明显标志,并在粧点周围用混凝土砌出护墩加以保护。 3m interval set midline, elevation control points, made a clear sign of wood makeup and festooned with concrete masonry around the pier guard to protect them. 控制人员严格按照点位,操纵仪器。 Control personnel in strict accordance with point, manipulate the instrument. 管材在孔内拉动的过程中受重力的作用,会发生管道下沉现象。 In the process of pulling the pipe in the hole by the force of gravity, it will sink pipeline phenomenon. 因此导向钻进的钻进点选择在略高于设计管中线的地方,以减低管道自重对高程的影响。 Thus guided boring drilling point selection in the tube just above the design centerline place to minimize the impact on the elevation of the pipe weight.

[0010] 钻液的好与坏对于拉管施工的成败起到了极关键的作用。 [0010] drilling fluid is good or bad for the success of trombone construction played a very key role. 钻液具有冷却钻头、润滑钻具,更重要的是可以悬浮和携带钻肩,使混合后的钻肩成为流动的泥浆顺利地排出孔外,既为回拖管线提供足够的环形空间,又可减少回拖管线的重量和阻力。 Drilling fluid has cooled drill, drill lubrication, more importantly, can be suspended and carried shoulder drill, drill shoulder after mixing becomes mud flows smoothly out of the hole, both to provide sufficient space for the pullback annular pipeline, but also reduce pullback line weight and drag. 残留在孔中的泥浆可以起到护壁的作用。 The slurry remaining in the pores can act as a retaining wall. 为改善泥浆性能,有时要加入适量化学处理剂。 To improve the mud performance, sometimes adding an appropriate amount of chemical treatment agent. 烧碱(或纯碱)可增粘、增静切力、调节PH值,投入烧碱量一般为膨润土量的2%。 Caustic soda (or soda) can increase viscosity, increased gel strength, adjust the PH value, putting caustic soda amount is generally 2% bentonite content. 泥浆配置采用:膨润土(进口):35%~45%,drigpae(进口)1%~2%,烧碱:0• 5%~0. 8%,水:65%~55%〇 Mud configuration uses: Bentonite (import): 35% ~ 45%, drigpae (import) 1% to 2%, caustic soda:. 0 • 5% ~ 0 8%, Water: 65% to 55% billion

[0011] 采用精度为〇. 1%的导向雷达控制钻进标高,导向标高控制在管中心线位置,钻杆轨迹的第一段是造斜段,控制钻杆的入射角度和钻头斜面的方向,缓慢给进而不旋转钻头, 就能使钻头按设计的造斜段钻进, [0011] The accuracy billion. 1% of the guide radar control drilling elevation, elevation control guide tube centerline position, the first paragraph is whipstocking drill track section, the control rod of the incident angle and the direction of slant drill slow to turn non-rotating drill bit, drill press can make the design of the drilling curve section,

[0012] 造斜段距离L: [0012] kickoff distance L:

Figure CN103851257BD00051

[0016] 式中:h-埋深,R1-造斜段曲率半径 [0016] where: h- depth, R1- build a radius of curvature inclined section

[0017] 钻头到达造斜段完成处,接下来的是排水管流水段的钻进;旋转钻头,并提供给进力,钻头就能沿水平直线钻进,由于在钻头位置安装了最先进的探测仪器,在钻进过程中通过地面精密接收仪器,通过接收仪器数据调整钻头角度,使得钻进按照流水线标高路线前进。 [0017] The drill bit reaches the kickoff of the completion of the next stage is drilling drainage water; rotary drill bits, and to provide feed force, the drill bit can drill a horizontal straight line, since the drill location to install the most advanced detection equipment, the drilling process received by ground precision instruments, adjust the angle of the drill bit by receiving instrument data such drilling proceeds in accordance with the pipeline route elevation. 到达出口工作坑,完成钻孔工序。 To reach the exit pit work, the completion of drilling operations. 钻机随机配有一手提式地表导航仪,用以确定钻头在地底的位置,监测钻头是否偏离设计轨迹。 Rig random with a portable navigation device surface, to determine the bit position in the ground, monitoring the drill deviates from the design trajectory. 在造斜段,钻头每钻进IOcm就测一次钻头的位置,在平铺段每隔20cm就监测一次。 Whipstocking segment, drill test once every drill drilling IOcm on location in the tile section on monitoring once every 20cm. 如果发现偏离轨道,就通过调整钻头斜面的方向,进行纠偏。 If it is found off track, you drill by adjusting the direction of the slope, were correct. 但纠偏不能太急,因为钻杆毕竟具有一定的刚度。 But correction is not too fast, because the drill after a certain stiffness. 应该在几根钻杆内完成纠偏,不能在一根钻杆内完成纠偏,同时也要注意不要纠偏过度。 Should be completed within a few drill correction, correction can not be completed within a drill, but also be careful not to over-correction.

[0018] 回拉扩孔:控制钻头按照预定的方向绕过地下障碍物直达目的地,然后卸下钻头换装适当尺寸和特殊类型的回程扩大器,使之能够在拉回钻杆的同时将钻孔扩大至所需直径,采用若干次扩径,第一次扩孔为300mm,第二次扩孔为500mm,如此类推,扩孔到管径的1. 5倍;回拉扩孔牵引时,泥浆作用特别重要,孔中缺少泥浆会造成塌孔等意外事故,使导向钻进失去作用并为再次钻进埋下隐患。 [0018] pull back reaming: control bit to bypass obstructions direct destinations underground in a predetermined direction, and then remove the drill and dress appropriately sized special type of return amplifier, so that it can at the same time back drill Drilling to expand to the desired diameter, using several expanding, first reaming of 300mm, second reaming of 500mm, and so on, reaming to 1.5 times the diameter of; traction when pulling back reaming mud of particular importance, the wells will result in a lack of mud hole collapse and other accidents, the guide for the drilling and drilling out of action lay hidden again. 考虑到地层泥浆较易漏失,泥浆漏失后,孔中缺少泥浆,钻杆及管线与孔壁间的摩擦力增大,导致拉力增大。 Taking into account the formation of mud loss easier, after mud losses, the lack of mud holes, drill pipe and line the hole wall friction increases, resulting in increased tension. 因此要保持在整个钻进过程中有"返浆",并根据地质情况的变化及时调整钻液配比以产生的不同泥浆。 Therefore, to maintain a "back to pulp" throughout the drilling process, and timely adjustment of drilling fluid ratio change according to the geological conditions to produce different mud.

[0019] 管道焊接:管道接口质量的好坏直接影响到拉管施工的成功进行,管道焊接采用电熔连接和热熔连接,热熔对接连接,两管段应各伸出卡具一定的自由长度,校对连接件, 使其在同一轴线上,错边不宜大于壁厚的10%,加热板温度适宜(220±KTC),当指示灯亮时,等10分钟使用,以使整个加热板温度均匀; [0019] pipe welding: Pipeline Interface quality directly affect the success of trombone construction progresses, pipe welding using fused connection and hot melt connection, Butt connection, two pipe sections should each extending the length of a certain freedom fixtures , proof connectors, make it the same axis, the wrong side of not more than 10% of the wall thickness, the heating plate temperature is suitable (220 ± KTC), when the light is on, wait 10 minutes to use, so that the entire heating plate temperature uniformity;

[0020] 回拉敷设管道:管材焊缝和管道强度检验合格后,用现场制作的"管材封套"将管头密封,然后在管头后端接上回扩头,管后接上分动器进行接管,将管子回接到工作井后, 卸下回扩头、分动器、取出剩余钻杆,堵上封堵头,进行水压试验;扩孔成功到要求后,在回拖前要进行管线连接的工序,用热熔法将双壁缠绕管连接成与成孔长度相当的管道,将管道与扩孔器相连,回拉将管道牵引进孔洞内,管道拉通后,应对管道内底高程进行复合测量。 [0020] The pull-back laying pipes: after passing the test tube and pipe weld strength, with on-site production of "pipe envelope" of the tube head sealed in a tube and then head back to the rear end connected to the expansion header, after a pipe connected to a splitter After takeover, the tube wells tied back to work, remove the back expansion head, splitter, remove the remaining drill, plug the plugging head, hydrostatic test; reaming success to request, before the pullback to connecting pipeline process performed by the hot melt method connected with the double-wall winding pipe into the hole length equivalent pipeline, the pipeline will be connected to the reamer, pull back into the hole inside the pipe pull, pull through the pipeline deal in the pipeline composite bottom elevation measurements. 用钻机将装有探测器的钻头在管道内拉动,试验人员根据探测器发出的信号来确定钻头的深度,经过换算后即计算出管内底高程。 The drill is equipped with detectors in the pipe pulling rig, test personnel according to the signal emitted by the detector to determine the depth of the drill, after conversion is calculated after the tube bottom elevation. 得出的结果和原始控制轨迹高程进行比较,就得到各粧位高程偏差数值。 The results obtained and the original control track elevation to compare, get all the makeup digit height deviation values.

[0021] 基坑回填:托管施工完工后,进行土方回填,以机械为主,人工配合,分层回填,每层厚度为30cm,并进行夯实,回填到距离地面0. 5米时,采用三七灰土回填,回填的高度与主体道路路面高程吻合。 [0021] Pit Backfill: After hosting the completion of construction, earthwork backfilling, with machinery, artificial, layered backfill, each having a thickness of 30cm, and tamped backfill the distance to the ground 0.5 meters, with three Seven lime backfill, height and body road surface elevation backfill agreement.

[0022] 综上所述,本发明的有益效果是:该工艺能够有效地对托管进行施工,施工周期短,施工质量好,解决了现有施工方法常常造成管道出现破裂或者线路无法施工的问题。 [0022] In summary, the beneficial effects of the present invention are: the process can be effectively hosted for construction, short construction period, good construction quality, to solve the existing construction methods often can not cause rupture or line problems arise pipeline construction .

具体实施方式 DETAILED DESCRIPTION

[0023] 下面结合实施例,对本发明作进一步的详细说明,但本发明的实施方式不仅限于此。 [0023] The following combination of embodiments of the present invention will be further described in detail, but the embodiment of the present invention is not limited to this.

[0024] 实施例: [0024] Example:

[0025] 基于对电缆排管敷设中的托管施工工艺,包括以下步骤: [0025] based on the following steps for laying the cable discharge pipe construction technology hosting, including:

[0026] 测量放线:平面控制及放线:依据现有边线,通过勘测方提供的控制点引测本工程的定位点,施工前通过全站仪沿地面上拉管的中心线每3米设置一粧,并沿拉管的中心线撒好白灰线且测出粧高程,算好粧高程与设计拉管流水面的关系; [0026] Surveying: Print control and discharge line: According to existing threads, fix the control points provided by the survey party cited measure of the project, before construction on the total station along the ground through the center line of each three meters trombone Set a makeup, and sprinkle lime good line along the center line of trombone and makeup measured elevation, considered a good makeup water surface elevation and design trombone relationship;

[0027] 高程控制:根据勘测方提供的水准点引测施工现场的高程控制点,高程控制采用两次仪器高程前后视等距测法,保持精度,为保证设计方向、位置的正确性,控制线的传递用经炜仪进行引测,保证平面位置的准确; [0027] Vertical Control: According to the standard survey control points provided by the elevation measurement point lead the construction site, the elevation control using two instruments before and after, as the equidistant elevation measurement method, to maintain accuracy, to ensure the design direction, position accuracy, control pass line with by Wei instrument lead measurement, ensure accurate location of the plane;

[0028] 挖掘基坑:每段牵引需要挖掘2个工作坑,包括入口工作坑、出口工作坑,均采用机械挖掘,根据需要采用密扣钢板粧支护,入口工作坑开挖尺寸为3m宽*10m长、出口工作坑尺寸为3m*5m,工作坑深度根据拉管流水面高程确定,出口工作坑是回拖时提供排水管入洞工作坑,出口工作坑尺寸和施工方法与入口工作坑相同,为保证工作坑内干燥和扩孔施工,在工作坑南侧设(4m宽*1. 5m长*1. 5m深)泥楽:沉淀池,并在池底设泥楽:栗随时将多余泥浆抽出坑外;在基槽两侧8~10米间距均匀布置管井,井深IOm~12m,开孔600mm,滤管米用300mm,外径400mm的无砂轮滤水管,管井定位在基槽两侧1. 5米,地表排水:管井所抽地下水排入雨污水检查井或直接排入干渠内。 [0028] Mining Pit: each work traction need to dig two pits, including the work of the pit entrance, exit pit work, both mechanical mining, as the case requires close support buckle steel makeup, entrance excavation work pit size is 3m wide * 10m long, export of pit size is 3m * 5m, work pit depth determined by the trombone water surface elevation, export work is to provide a drain hole in the hole when working pit pullback, export of pit size and construction methods and work pit entrance same, to ensure the work dried and reaming construction pit, the pit in the south side of the work (4m width * 1 5m long * 1 5m deep.) mud yue: sedimentation tanks, and set up in the bottom mud yue: chestnut to keep the surplus mud out of the pit outside; both sides of the groove in the base of 8 to 10 m spacing evenly arranged tube wells, depth IOm ~ 12m, opening 600mm, filter tube meter with 300mm, 400mm outer diameter of no wheel drainage pipe, tube wells located on both sides of the base groove 1.5 m, surface drainage: tubewell pumped groundwater discharge into storm water manholes or directly discharged into the canal. 管井定位:根据轴线控制点,用经炜仪定位,其位置要避开基础,成孔:钻机就位后要平整稳固确保在施工工程中不发生倾斜移动,孔率应小于1 %。 Tubewells Location: According to the axis of the control point, Wei instrument used by positioning its position to avoid base, into the hole: After the rig in place to ensure the smooth stable tilt movement does not occur in the construction project, the holes should be less than 1%. 安装管井:井管采用无砂混凝土滤水管,连接要采取有效措施,使其紧密牢固,防止井管错位,造成漏泥,洗井:井管安装后,及时在井管与孔壁间填充3-8_ 的碎石过滤层,碎石杂质含量不大于3% ;用铁锹下料,防止分层不均匀和冲击井管,填滤料一次完成。 Install tubewells: Well tube with no sand concrete drainage pipe, connection to take effective measures to make it snug, well pipe to prevent dislocation, resulting in leakage of mud, wash well: well pipe installation, and timely in the well pipe and the hole is filled wall 3 -8_ filter layer of gravel, crushed stone impurity content of not more than 3%; spade cutting, to prevent stratification and uneven impact well pipe, fill the filter once. 从底填到井口Im左右,上部采用不含砂石的粘土封。 Im fill from the bottom to the well head around the upper part of the gravel without clay seal. 然后清洗滤井,冲洗沉渣。 Then clean the filter wells, washing sediment. 清洗滤井应在粘土封口8h内进行,以免时间过长,护壁泥皮老化,难以破坏,影响渗水效果。 Cleaning filter wells shall be sealed in a clay 8h, so as not too long, Wall mud skin aging, difficult to damage, the impact of seepage effect. 抽水:洗井1 2 - 2 4h后留出清水,此时即可连续抽水。 Pumping: wash well 1 2 - 2 4h after leaving the water, this time can be continuously pumped. 如果较混浊,泥砂含量大, 应查找原因。 If more turbid, sediment content of large, should find out the reasons. 井管封闭:井管封闭在不需要继续降水后进行,封闭时垫层下2m井管内用C 20砼填实,为了加强施工缝处的防水效果,底板侧壁处用双道上水处理。 Well pipe closed: closed risers do not need to continue after the precipitation performed well pipe when enclosed 2m concrete infill with C 20 under the cushion, in order to strengthen the construction joints waterproof effect, the bottom side wall of the double-track treatment.

[0029] 钻机钻进:钻机运到现场先锚固稳定,钻机是依靠地锚座和后支承与地基固定的, 安放钻机前应先平整场地,根据预先设计的的钻机倾斜角度进行调整,依靠钻机动力将锚杆打入土中,使后支承和前底座锚与地层固结稳定,采用精度为0. 1%的导向雷达控制钻进标高,导向标高控制在管中心线位置,钻杆轨迹的第一段是造斜段,控制钻杆的入射角度和钻头斜面的方向,缓慢给进而不旋转钻头,就能使钻头按设计的造斜段钻进, [0029] The drilling rig: Rig transported to the site to anchor stability anchor drilling rig is to rely on the support and foundation rear seat and fixed, mounted rig should be preceded by leveling the ground, be adjusted according to the inclination angle of pre-designed rig, relying on the rig Power will bolt into the soil, so that the rear support base anchored with the formation and consolidation of the former stable, using precision to 0.1% of the guide radar control drilling elevation, elevation control guide tube centerline position, drill track The first was made oblique segment, control drill pipe and drill bevel angle of incidence direction, and then slow to a non-rotating drill bit, drill press can make the design of whipstocking drilling segment,

[0030] 造斜段距离L: [0030] kickoff distance L:

Figure CN103851257BD00071

[0034] 式中:h-埋深,R1-造斜段曲率半径,取1200d,代入数据即可计算出L值以及a 值。 [0034] where: h- depth, R1- curvature radius curve section, take 1200d, on behalf of the data can be calculated L value and a value.

[0035] 钻头到达造斜段完成处,接下来的是排水管流水段的钻进,泥浆压力l~5Mpa,流量:50~90L/min,泥浆比重:1. 8~2. 0g/cm3,钻机转速:160 转/ 分,扭矩:8000~10000N.m,推拉力:18~20T。 [0035] The drill bit reaches the kickoff of the completion of the next stage is drilling drainage water, mud pressure l ~ 5Mpa, flow: 50 ~ 90L / min, the mud weight:.. 1 8 ~ 2 0g / cm3, Drill speed: 160 r / min, torque: 8000 ~ 10000N.m, pushing or pulling force: 18 ~ 20T.

[0036] 钻机采用水平导向钻进法,它的主要特点是,可根据预先设计好的牵引线路驱动装有契形钻头的钻杆从地面钻入,地面仪器接收由地下钻头内传送器发出的信息,控制钻头按照预定的方向绕过地下障碍物直达目的地,然后卸下钻头换装适当尺寸和特殊类型的回程扩大器,使之能够在拉回钻杆的同时将钻孔扩大至所需直径,并将需要铺装的管线同时返程牵回钻孔入口处。 [0036] rig horizontal directional drilling method, its main feature is equipped with a wedge to drive the drill bit from the drill into the ground according to the pre-designed traction lines, ground instruments issued by the receiving conveyor underground drill information, control drill bypassing obstacles direct destinations underground in a predetermined direction, and then remove the drill and dress appropriately sized special type of return amplifier, so that it can at the same time back drill will expand to the desired drilling diameter pipeline will require paving return pull back while drilling the entrance. 在整个工作中,特别的混合机组提供的钻孔混合液不断地从钻头的钻口嘴喷出,用以润滑钻头,钻杆和加固钻道,以提高整个工程的工作效率。 Throughout the work, the drilling unit to provide special mix mixture continuously from the drill bit mouth mouth spray, to lubricate drill bits, drill pipe and drill road reinforcement to improve the efficiency of the whole project.

[0037] 检查钻机的测量仪器的电源是否充足,不足的更换电池,特别是探头电池更不可马虎,按照测量仪器使用规范操纵仪器,探头装进探头盒内,打开接收机和同步显示器,转动探头盒检查仪器是否正常,把探头盒与钻头接好并连接在钻杆上,开机输送钻进液,检查钻头喷嘴是否畅通,启动机器进行造斜和水平导向钻进。 Power [0037] Check rig adequacy measurement instruments, insufficient to replace the battery, the battery and more particularly the probe can not be careless, according to the use of standardized measuring instruments to manipulate the instrument, the probe put the probe inside the box, open receivers and synchronous display, rotating probe Box inspection equipment is normal, the probe box and drill plugged in and connected to the drill pipe, drilling fluid power delivery, check bit nozzles is smooth, start the machine kickoff and horizontal guide drilling.

[0038] 钻杆的上、下接头对正,边缓慢给进动力边慢转上扣,不得拧得过紧,钻机就位要严格对中,保证钻机平稳、水平钻进。 Drill on the [0038], at the joint on the positive side of the slow feed slowly turn on the power side buckle can not tighten the rig in place to strictly ensure the smooth rig, horizontal drilling. 开钻前要认真检查钻杆,发现弯曲要及时调直或更换, 钻进速度不宜过快,应根据地层条件合理调定给进力。 Check carefully before drilling rod, bent to find timely straighten or replace, not too fast drilling speed, ground conditions should be based on a reasonable set-feeding force. 根据土层类别来确定钻进速度,在松砂层不宜超过3m/min,在硬土层中,钻进速度以钻机不发生跳动为宜。 According to the category to determine soil penetration rate, in loose sand should not exceed 3m / min, in the hard soil, the drilling speed to the rig does not occur beating appropriate. 并经常检查钻头磨损程度,发现磨损严重,及时进行补焊修复,造斜顶进时,每次顶进进尺控制在〇. 5m左右为好,曲线要缓,钻杆内不得进杂物,以免堵塞钻头喷嘴,当机油压力报警指示灯亮时,说明油压不正常,要进行检查,当机油堵塞报警指示灯亮时,要更换机油滤心,改变水栗排量时,先摘开离合器,不得带速换档,当水栗较长时间不工作的情况下,应将其变速箱挂空挡,后合上离合器,以保持离合器操纵系统中的分离轴承,按规范开动钻机后,不允许马上用全负荷钻进,必须先进行试运转,确定各部分运转正常后,方可开始钻进。 And regular checks of drill wear was found badly worn, timely repair welding repair, making slant into each time jacking control in square footage. 5m around as well, the curve to be slow, can not drill into the debris inside, in order to avoid bit nozzles clogged when the oil pressure warning lights to indicate that the oil pressure is not normal, to be checked when the oil clogging indicator lights, replace the oil filter to the heart, change the water chestnut displacement, the first pick to open the clutch, should not be allowed speed shift, when the case of water chestnut long time does not work, it should be linked to the gearbox in neutral, after closing the clutch, clutch control system in order to maintain the separation of the bearing, press the start rig specification, allowed immediately with full Drilling load, it must first make a trial run to determine each part is working properly, before starting drilling.

[0039] 回拉扩孔:控制钻头按照预定的方向绕过地下障碍物直达目的地,然后卸下钻头换装适当尺寸和特殊类型的回程扩大器,使之能够在拉回钻杆的同时将钻孔扩大至所需直径,采用若干次扩径,第一次扩孔为300mm,第二次扩孔为500mm,如此类推,扩孔到管径的1. 5 倍; [0039] pull back reaming: control bit to bypass obstructions direct destinations underground in a predetermined direction, and then remove the drill and dress appropriately sized special type of return amplifier, so that it can at the same time back drill Drilling to expand to the desired diameter, using several expanding, first reaming of 300mm, second reaming of 500mm, and so on, reaming to 1.5 times the diameter of;

[0040] 管道焊接:管道焊接采用电熔连接,电熔连接机具与电熔管件应正确连通,连接时,通电加热的电压和时间符合电熔连接机具和电熔管件的规定,电熔连接冷却时间,不得移动连接件或连接件上不得施加任何外力,电熔承插连接管材连接端应切割垂直,连接面应清洁干净,并应表明插入深度,刮去表面的氧化层。 [0040] pipe welding: Pipeline welding using fused connection, fused connection equipment and fused pipe should be properly communicated, connection, voltage and time in line with fused connection ohmic heating equipment and fused pipe provisions fused connection cooling time, not move, do not apply any force, fused connection socket connection pipe should be cut vertically on end connection or connections, connecting surfaces should be clean, and shall indicate the depth of insertion, scrape the surface of the oxide layer. 连接前,对应连接件,使其在同一轴线上,干管连接部位下端应采用支架,并固定吻合,管道连接时,施工现场条件允许时,可在在沟槽上进行焊接,焊接完毕后,检查观测孔内物料是否顶起,焊缝处是否有物料挤出。 Before connecting the corresponding connectors, make it the same axis, the lower end of the dry pipe joints should stand, and a fixed match, when the pipe connection, the construction site conditions allow, can be welded to the groove, welding is completed, Check whether material from the top observation wells, whether there is weld material extrusion. 合格的焊口应是熔焊过程中,无冒(着)火、过早停机等现象,电熔件的观察孔有物料顶出。 Qualified welding process weld should be no risk (the) fire, premature shut-down phenomenon, observation hole member has fused material ejection.

[0041] 管道焊接采用热熔焊接,热熔连接前、后连接工具加热面上的无污物应用洁净棉布擦净,热熔连接加热时间和加热温度应符合热熔连接工具生产厂和管材、管件生产厂的规定,热熔连接保压冷却时间,不得移动连接件或连接件上不得施加任何外力,管道连接前,管材固定在机架上,取下铣刀,闭合卡具,对管子的端面进行铣削,当形成连续的切削时,退出卡具,检查管子两端的间隙(不得大于3_)。 [0041] The pipe welding using hot-melt welding, hot melt connection before, after heating the surface of the bonding tool without application of clean cotton cloth wipe dirt, hot melt connection heating time and the heating temperature should be in line with the hot melt bonding tool manufacturing plant and pipes, pipe production plant provisions, hot melt connection cooling dwell time can not move on the connector or connectors must not be applied before any external force, pipe connections, pipe fixed to the rack, remove the cutter, closed fixtures on the tube end face milling, when forming a continuous cutting, exit fixtures, check the gap at both ends of the tube (no more than 3_). 电熔连接面应清洁干净,刮初表面皮, 热熔对接连接,两管段应各伸出卡具一定的自由长度,校对连接件,使其在同一轴线上,错边不宜大于壁厚的10%,加热板温度适宜230°C,当指示灯亮时,最好在等10分钟使用,以使整个加热板温度均匀,温度适宜的加热板置于机架上,闭合卡具,并设系统的压力。 Fused connection surface should be clean, scrape the surface of the skin early, Butt connection, two pipe sections should each extending the length of the jig some freedom, proofreading connectors, make it on the same axis, the wrong side of the wall thickness of not more than 10 %, the hot plate temperature suitable for 230 ° C, when the light is on, it is best to use in 10 minutes and so on, so that the entire heating plate temperature uniformity, temperature suitable for heating plate is placed on the rack, closure fixtures, and set up the system pressure. 达到吸热时间后,迅速打开卡具,取下加热板。 After reaching the heat time, quickly opened the fixtures, removing the heating plate. 应避免与熔融的端面发生碰撞,迅速闭合卡具,并在规定时间内,匀速地将压力调节到工作压力,同时按下冷却时间按钮。 To avoid collision with the end surface melting occurs rapidly closing fixtures, and within the specified time, uniform ground pressure is adjusted to work pressure, cooling time while pressing the button. 达到冷却时间后, 在按一次冷却时间按钮,将压力降为零,打开卡具,取下焊好的管子,卸管前一定要将压力降至为零,若移动焊机,应拆下液压软管,并做好接头防尘工作,合格的焊缝应有两翻边,焊道翻卷的管外圆周上,两翻边的形状、大小均匀一致,无气孔、鼓泡和裂纹,两翻边之间的缝隙的根部不低于所焊管子的表面,管道连接时,施工现场条件允许时,可在在沟槽上进行焊接,管口应临时堵封。 After reaching the cooling time, cooling time press the button, the pressure drop to zero, open the fixture, remove the welded pipe, before unloading pipe pressure drops sure to zero, if the mobile welder, remove the hydraulic hose, and make joint dust work, qualified weld should be two cuffs rolled bead on the outer circumference of the tube, the two flange shape, consistent uniform size, nonporous, blistering and cracking, two-fold the roots of the gap between the sides is not lower than the sub-surface of the pipe when the pipe connection, the construction site conditions permit, can be welded in the trench, the nozzle should be temporary dam. 在大风环境下操作,采取保护措施或调整施工工艺。 Operating under windy conditions, to take protective measures or adjust the construction process.

[0042]回拉敷设管道:管材焊缝和管道强度检验合格后,用现场制作的"管材封套"将管头密封,然后在管头后端接上回扩头,管后接上分动器进行接管,将管子回接到工作井后, 卸下回扩头、分动器、取出剩余钻杆,堵上封堵头,进行水压试验;扩孔成功到要求后,在回拖前要进行管线连接的工序,用热熔法将双壁缠绕管连接成与成孔长度相当的管道,将管道与扩孔器相连,回拉将管道牵引进孔洞内,管材无向上的折点。 [0042] pullback laying pipes: after passing the test tube and pipe weld strength, with on-site production of "pipe envelope" of the tube head sealed in a tube and then head back to the rear end connected to the expansion header, after a pipe connected to a splitter After takeover, the tube wells tied back to work, remove the back expansion head, splitter, remove the remaining drill, plug the plugging head, hydrostatic test; reaming success to request, before the pullback to connecting pipeline process performed by the hot melt method connected with the double-wall winding pipe into the hole length equivalent pipeline, the pipeline will be connected to the reamer, pull the pipe back into the inner hole of traction, pipe no upward turning point. 水平最大偏差±0.3米。 Level maximum deviation ± 0.3 meters. 纵向垂直最大偏差±0. 25米。 Longitudinal vertical maximum deviation ± 0. 25 meters. 保持管内壁干净,拉管过程中封堵内壁。 Keeping a clean tube wall, the inner wall of the trombone during closure. 拉管过程中,操作手严格按照地面预布控制粧的平面位置和高程控制钻头走向,每隔水平距离3米校核一次。 Trombone process operator in strict accordance with the makeup of the ground prewired control plane location and elevation to control the drill, every horizontal distance of 3 m check again. [0043] 基坑回填:托管施工完工后,进行土方回填,以机械为主,人工配合,分层回填,每层厚度为30cm,并进行夯实,回填到距离地面0. 5米时,采用三七灰土回填,回填的高度与主体道路路面高程吻合。 [0043] Pit Backfill: After hosting the completion of construction, earthwork backfilling, with machinery, artificial, layered backfill, each having a thickness of 30cm, and tamped backfill the distance to the ground 0.5 meters, with three Seven lime backfill, height and body road surface elevation backfill agreement.

[0044] 根据开挖情况过河或过路段土质差,采用打拔钢板粧支护措施,装卸钢板粧宜采用两点吊。 [0044] across the river or over sections of the poor soil conditions according to the excavation, using makeup pulling a steel support measures, handling steel makeup should adopt two hanging. 吊运时,每次起吊的钢板粧根数不宜过多,注意保护锁口免受损伤。 When lifting, lifting the plate every time the number of not too much makeup, pay attention to protect the locking from damage. 钢板粧应堆放在平坦而坚固的场地上,必要时对场地地基土进行压实处理。 Steel makeup should be stacked on a flat and solid grounds for soil compaction processing site if necessary. 在堆放时要注意:堆放的顺序、位置、方向和平面布置等应考虑到以后的施工方便;钢板粧要按型号、规格、长度、施工部位分别堆放,并在堆放处设置标牌说明;钢板粧应分别堆放,每层堆放数量一般不超过5 根,各层间要垫枕木,垫木间距一般为3~4m,且上、下层垫木应在同一垂直线上,堆放的总高度不宜超过2m。 When stacked to note: stacking sequence, position, direction and layout, etc. should be taken into account to facilitate future construction; steel makeup according to type, size, length, construction site were stacked and set label instructions at dumps; steel makeup should be stacked separately, the number of each stack is generally not more than 5, between the layers to pad sleepers, skids spacing is generally 3 ~ 4m, and the upper, lower skids should be in the same vertical line, stacked total height should not exceed 2m .

[0045] 单粧打入法以一块或两块钢板为一组,从一角开始逐块插打,直至工程结束,这种打入方法施工简便,可不停顿地打,粧机行走路线短,速度快。 [0045] The single makeup into law with one or two steel plates as a group, starting from the corner of the block by block interpolation fight until the end of the project this into the method of construction is simple, do not pause to play, makeup machine short routes, speed fast. 先用吊车将钢板粧吊至插点处进行插粧,插粧时锁口要对准,每插入一块即套上粧帽,轻轻加以锤击;在打粧过程中,为保证钢板粧的垂直度,用经炜仪在两个方向加以控制;为防止锁口中心线平面位移,可在打粧进行方向的钢板粧锁口处设卡板,阻止板粧位移。 First with a crane lifting steel makeup to be inserted at the interpolation point makeup makeup when locking plug to be aligned, each piece that is inserted into the cap put on makeup, gently hammering them; playing makeup process, in order to ensure the steel makeup vertical, with the instrument to be controlled by Wei in both directions; to prevent locking centerline plane displacement direction can be carried out in the fight makeup makeup locking plate is provided at the card board, board makeup to prevent displacement. 同时在围檩上预先算出每块板粧的位置,以便随时检查校正。 While on the purlin calculated in advance the location of the makeup of each plate in order to keep checking calibration.

[0046] 基坑内侧由上至下共设置2层围檩及内支撑和角撑,围檩采用热乳宽翼缘30H型钢,内支撑与角撑采用®273无缝钢管、壁厚10mm。 [0046] The inside of the pit were set two layers from top to bottom purlin and inner support and the gusset, purlin hot milk 30H wide-flange steel, internal support and the gusset use ®273 seamless steel pipe, wall thickness of 10mm.

[0047] 起重机应随振动锤的起动而逐渐加荷,起吊力一般略小于减振器弹簧的压缩极限;供振动锤使用的电源应为振动锤本身电动机额定机功率的1. 2~2. 0倍;对引拔阻力较大的钢板粧,采用间歇振动的方法,每次振动15min,振动锤连续工作不超过I. 5h。 [0047] crane should start with the vibratory hammer gradually loading, lifting force is generally slightly less than the damper spring compression limit; power supply should be used for vibration hammer hammer vibration machine itself rated motor power of 1.2 to 2. 0 times; greater resistance to crosswise steel makeup, using the method of intermittent vibration, vibration every 15min, vibration hammer continuous work no more than I. 5h.

[0048] 钢板粧拔除后留下的土孔应及时回填处理,特别是周围有建筑物、构筑物或地下管线的场合,尤其应注意及时回填,否则往往会引起周围土体位移及沉降,并由此造成临近建筑物等的破坏。 [0048] Soil holes left rear leaf makeup removal shall promptly backfill process, especially with buildings, structures or underground pipelines around the case, in particular, should pay attention to timely backfill, otherwise tend to cause the surrounding soil displacement and settlement, by This damage to adjacent buildings and the like.

[0049] 基坑监测,包括支护结构的水平位移、周围地下管线的变形、地下水位、粧内力、支撑轴力、土体分层位移等。 [0049] pit monitoring, including the horizontal displacement of supporting structure around the underground pipeline deformation, groundwater level, makeup internal forces, support axial force, displacement of soil stratification. 在基坑顶部各转角处应设置沉降、倾斜及水平位移观测点;支护板粧、支撑、围檩的应力及应变观测点应设置在受力较大位置,数量及位置宜结合现场条件确定。 In the top of each corner of the pit should be set to the settlement, tilt and horizontal displacement observation points; supporting board makeup, support, purlin stress and strain observation point should be set in a larger force position, number and location of field conditions to determine the appropriate combination . 地下水位的观测宜在基坑四周设四个观测坑。 Observations of groundwater level should be established four observation pit excavation around. 基坑底部回弹及隆起观测视现场情况确定。 Pit bottom resilience and uplift, as the site is determined by observation.

[0050] 监测与测试的控制指标,支护粧顶水平位移累计不大于30mm,位移速率不大于3mm/d;粧身、围檩、支撑构件及立柱的应力值不大于设计值的80% ;周围道路及管线水平位移总量不大于30mm;地下水位应低于设计指标。 [0050] control indicators for monitoring and testing, supporting the horizontal displacement of the top makeup accumulated no more than 30mm, displacement rate of not more than 3mm / d; makeup body, purlin support member and column stress value is not more than 80% of the design value; the total amount of surrounding roads and pipelines horizontal displacement of not more than 30mm; the water table should be less than design specifications.

[0051] 在围护施工时,正常情况下,临近监测对象每2天观测1次,当日变化量或累计变化量超警戒值时,监测频率适当加密,每天观测1次。 [0051] When the envelope construction, under normal circumstances, close observation of the object once every two days, the day or the cumulative change in the amount of change when the warning value, the monitoring frequency properly encrypted, observed once a day. 特殊情况如监测数据有异常或突变, 变化速率偏大等,适当加密监测频率,直至跟踪监测。 Special circumstances such as monitoring data abnormal or mutated, the rate of change is too large, etc., appropriate encryption monitoring frequency, until the tracking and monitoring. 在地下结构施工阶段,各监测项目观测频率为2~3次/周,支撑拆除阶段1次/天,坑底的控制标高应比设计标高提高15 - 30厘米,先打粧后挖土,机械挖完后,再用人工清坑。 During the construction phase of the underground structure, the monitoring project observation frequency is 2 to 3 times / week, supporting the removal of stage 1 time / day, Bottom of control elevation should be higher than the design elevation 15--30 cm, hit makeup digging, mechanical After digging, then manually clean pit. 对设内支撑的基坑,在每层土开挖中, 同时开挖的部分,在位置及深度上,要保持对称,防止基坑结构承受偏载。 Provided support within the pit, excavation of soil in each layer, while part of the excavation, the location and depth, to maintain symmetry and prevent pit structure to withstand partial load. 基坑开挖应分层进行,尚差不宜过大。 Excavation should be stratified, yet the difference is not too large. 土质越软,尚差应越小。 Soil softer, yet the difference should be smaller. 基坑开挖到设计标尚后,一定要将支护粧根部的淤泥清挖,否则会造成支护粧倒塌。 Excavation to design standard yet, be sure to support dredging silt makeup root, otherwise it will cause the collapse of support makeup. 基坑底面不能暴露时间过长。 The pit bottom can not be exposed for too long. 基坑开挖中间间歇间过长,变形会随着时间不断增加。 Excavation intermediate between intermittent long deformation increased over time. 这种情况下,应考虑增加支护结构的强度。 In this case, you should consider increasing the strength of the supporting structure. 注意基坑的时空效应:基坑边坡的时效性问题比较明显,雨季更为显著。 Note pit temporal effects: timeliness pit slope of the more obvious problems, the rainy season is more significant. 将充分考虑土层的蠕变性,尽快完成地下结构施工。 Will give full consideration to soil creep, completed the construction of underground structures as soon as possible.

[0052] 利用本施工工艺,使得托管的施工周期短,而且施工质量稳定,托管不易破裂,能够保证电缆排管的敷设质量,延长使用寿命。 [0052] The use of the construction process, making the construction cycle hosting short and stable quality of construction, hosting not easy to break, to ensure the quality of the cable laying drain pipes and prolong life.

[0053] 以上所述,仅是本发明的较佳实施例,并非对本发明做任何形式上的限制,凡是依据本发明的技术、方法实质上对以上实施例所作的任何简单修改、等同变化,均落入本发明的保护范围之内。 [0053] described above, only the preferred embodiment of the present invention, the present invention is not to make any formal restrictions, all based on technology, the method of the present invention is virtually any simple modifications made to the above example embodiment, the equivalent change, fall within the scope of the present invention.

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Clasificaciones
Clasificación internacionalF16L1/028
Eventos legales
FechaCódigoEventoDescripción
11 Jun 2014C06Publication
9 Jul 2014C10Entry into substantive examination
28 Oct 2015C14Grant of patent or utility model