CN104314515A - Method and device for sealing coal mine drilled hole - Google Patents

Method and device for sealing coal mine drilled hole Download PDF

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Publication number
CN104314515A
CN104314515A CN201410574967.0A CN201410574967A CN104314515A CN 104314515 A CN104314515 A CN 104314515A CN 201410574967 A CN201410574967 A CN 201410574967A CN 104314515 A CN104314515 A CN 104314515A
Authority
CN
China
Prior art keywords
grouting pipe
hole sealing
sealing
hole
pipe
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201410574967.0A
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Chinese (zh)
Inventor
熊克剑
王明
马建兵
杨辉
刘海涛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenhua Group Corp Ltd
Shenhua Ningxia Coal Industry Group Co Ltd
Original Assignee
Shenhua Group Corp Ltd
Shenhua Ningxia Coal Industry Group Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenhua Group Corp Ltd, Shenhua Ningxia Coal Industry Group Co Ltd filed Critical Shenhua Group Corp Ltd
Priority to CN201410574967.0A priority Critical patent/CN104314515A/en
Publication of CN104314515A publication Critical patent/CN104314515A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00Sealing or packing boreholes or wells
    • E21B33/10Sealing or packing boreholes or wells in the borehole
    • E21B33/13Methods or devices for cementing, for plugging holes, crevices, or the like

Abstract

The invention discloses a method and a device for sealing a coal mine drilled hole. The method includes the following steps: step 1, forming the drilled hole in a mine, arranging a hole sealing pipe in the drilled hole, and forming an annular space between the drilled hole and the hole sealing pipe; step 2, arranging an arc-shaped guide head at the front end of the hole sealing pipe; step 3, fixing a grouting pipe in the hole sealing pipe; step 4, injecting cement grout into the grouting pipe; step 5, allowing the cement grout to jack mud in the annular space out of the drilled hole, and completing hole sealing after filling the annular space with the cement grout to form a cement sealing layer. Cement is poured through the grouting pipe without using a rubber plug, so that a hole sealing accident caused by clamping stagnation of the rubber plug is avoided, probability of accidental risk like equipment failure is lowered effectively, a mud mixing section of the mud and the cement is avoided being overlong, and sealability of hole sealing is guaranteed while hole sealing material consumption is reduced.

Description

A kind of method for sealing of coal mine drilling and hole sealing device
Technical field
The present invention relates to a kind of method for sealing and hole sealing device of coal mine drilling.
Background technology
In recent years, along with the Fast Construction of large-scale Modern Pit, need to arrange big diameter borehole in mine, this kind of boring main purpose be set up between ground with underworkings vertical can the stable channel of Long-Time Service, for lower Gunning material, as emergent drainage channel, as purposes such as gas drainage under suction passages.The drilling diameter of this kind of boring is usually between 445mm--800mm, the seamless steel pipe of diameter 273mm--610mm is entered under in boring, annular space between steel pipe and hole wall adopts cement paste to carry out sealing of hole, with bad grounds such as packing aquifers, guarantees Long-Time Service of holing.Method for sealing of the prior art utilizes water under high pressure to be replaced in steel pipe by cement paste to the annular space outside steel pipe, reach the object of packing stratum and fixing steel pipe, but, this method for sealing is only applicable to the small diameter hole of below 300mm: the large diameter steel pipe entering nonstandardized technique under big diameter borehole, because large diameter steel pipe needs to adopt welding manner to connect, thus cause interface rough, and then when using plug to isolate mud and cement, easily cause plug at the inwall clamping stagnation of steel pipe, and then cause sealing of hole accident; Also be provided with lined ceramics steel pipe in some boring, namely inwall is provided with the thick wear-resistant ceramic layer of 4mm, and wear-resistant ceramic layer rough surface, therefore, equally easily blocks plug, causes sealing of hole accident.Visible, the sealing of hole of big diameter borehole cannot adopt plug to come packing mud and cement, does not arrange plug and then causes mud and cement mixed slurry section in annular space long further, waste cement, and due to annular space cement layer uneven and produce seepy question, the normal use of impact boring.
Summary of the invention
For prior art Problems existing, the object of this invention is to provide a kind of method for sealing and hole sealing device of coal mine drilling, this method for sealing and hole sealing device can not only avoid the sealing of hole accident caused due to plug clamping stagnation, and mud and cement mixed slurry section can also be avoided long.
Object of the present invention is achieved through the following technical solutions:
A method for sealing for coal mine drilling, comprises the following steps:
Step is 1.: in mine, offer boring, and arrange hole sealing tube in described boring, form annular space between described boring and described hole sealing tube;
Step is 2.: arrange arcuate guide head in the leading section of described hole sealing tube, one end of described guide head is docked with described hole sealing tube, and the other end of described guide head offers flow-guiding mouth;
Step is 3.: in described hole sealing tube internal fixtion Grouting Pipe, the mouth of pipe and the described flow-guiding mouth of described Grouting Pipe are oppositely arranged;
Step is 4.: in described Grouting Pipe, inject cement paste, and described cement paste enters described annular space through the mouth of pipe of described Grouting Pipe and described flow-guiding mouth;
Step is 5.: the mud in described annular space is replaced out described boring by described cement paste, is full of described cement paste and forms cement seal layer, namely complete sealing of hole in described annular space.
Further, be provided with one way valve in described guide head, the top of described one way valve is connected with the stationary pipes for plugging described Grouting Pipe.
Further, the outer wall of the end of described Grouting Pipe offers multiple tracks annular recess, is arranged with the sealing ring for sealing gap between described stationary pipes and described Grouting Pipe in described annular recess.
Further, position-limited rack is provided with between the outer wall of described Grouting Pipe and the inwall of described hole sealing tube.
Further, described position-limited rack is trapezoidal limiting plate, and a base of described trapezoidal limiting plate is fixedly connected with the outer wall of described Grouting Pipe, and another base of described trapezoidal limiting plate abuts with the inwall of described hole sealing tube.
Further, 3. described step also comprises injected clear water in described Grouting Pipe, observes the water level in described Grouting Pipe after 10min, if water level decreasing is no more than 0.2m, then proves that described Grouting Pipe does not exist leak source; If water level decreasing is more than 0.2m, then prove that described Grouting Pipe exists leak source, search described leak source and shutoff is carried out to described leak source.
Present invention also offers a kind of hole sealing device of coal mine drilling, comprise the boring be opened in mine and the hole sealing tube be arranged in described boring, annular space is formed between described boring and described hole sealing tube, the leading section of described hole sealing tube is provided with arcuate guide head, one end of described guide head is docked with described hole sealing tube, the other end of described guide head offers flow-guiding mouth, described hole sealing tube internal fixtion has for the Grouting Pipe to grout injection in described annular space, and the mouth of pipe and the described flow-guiding mouth of described Grouting Pipe are oppositely arranged.
Further, be provided with one way valve in described guide head, the top of described one way valve is connected with the stationary pipes for plugging described Grouting Pipe.
Further, the outer wall of the end of described Grouting Pipe offers multiple tracks annular recess, is arranged with the sealing ring for sealing gap between described stationary pipes and described Grouting Pipe in described annular recess.
Further, trapezoidal limiting plate is provided with between the outer wall of described Grouting Pipe and the inwall of described hole sealing tube, a base of described trapezoidal limiting plate is fixedly connected with the outer wall of described Grouting Pipe, and another base of described trapezoidal limiting plate abuts with the inwall of described hole sealing tube.
The method for sealing of coal mine drilling provided by the invention and hole sealing device are by Grouting Pipe cement injection, without the need to using plug, thus avoid the sealing of hole accident caused due to plug clamping stagnation, significantly reduce the probability that the emergency risks such as equipment fault occur, simultaneously, also avoid mud and cement mixed slurry section long, while ensure that the sealing of sealing of hole, reduce sealing material consumption.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the method for sealing of a kind of preferred coal mine drilling of the present invention;
Fig. 2 is the schematic diagram of the hole sealing device of a kind of preferred coal mine drilling of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, a preferred embodiment of the present invention is described in detail.The identical Reference numeral of wherein identical component represents.It should be noted that, the word "front", "rear" of use is described below, "left", "right", "up" and "down" refer to direction in accompanying drawing, word " interior " and " outward " refer to the direction towards or away from particular elements geometric center respectively.
As shown in Figure 1, a kind of embodiment of the present invention provides a kind of method for sealing of coal mine drilling, and the method comprises the following steps:
Step is 1.: in mine, offer boring, and arrange hole sealing tube in described boring, form annular space between described boring and described hole sealing tube;
Step is 2.: arrange arcuate guide head in the leading section of described hole sealing tube, one end of described guide head is docked with described hole sealing tube, and the other end of described guide head offers flow-guiding mouth;
Step is 3.: in described hole sealing tube internal fixtion Grouting Pipe, the mouth of pipe and the described flow-guiding mouth of described Grouting Pipe are oppositely arranged;
Step is 4.: in described Grouting Pipe, inject cement paste, and described cement paste enters described annular space through the mouth of pipe of described Grouting Pipe and described flow-guiding mouth;
Step is 5.: the mud in described annular space is replaced out described boring by described cement paste, is full of described cement paste and forms cement seal layer, namely complete sealing of hole in described annular space.
During use, the cement slurry volume calculated is pumped in described Grouting Pipe, cement paste in Grouting Pipe enters described annular space by the mouth of pipe of described Grouting Pipe lower end and described flow-guiding mouth successively, mud in described annular space is replaced out by described cement paste, and then fill up described annular space by described cement paste, cement paste finally solidifies and forms cement seal layer, namely completes sealing of hole.Visible, the method for sealing of coal mine drilling provided by the invention is by Grouting Pipe cement injection, without the need to using plug, thus avoid the sealing of hole accident caused due to plug clamping stagnation, significantly reduce the probability that the emergency risks such as equipment fault occur, meanwhile, also avoid mud and cement mixed slurry section long, while ensure that the sealing of sealing of hole, reduce sealing material consumption.
Those skilled in the art it should be noted, the method for sealing of coal mine drilling provided by the present invention is more suitable for the big diameter borehole that bore is greater than 300mm, thus larger space can be provided for described Grouting Pipe and cement seal layer, thus contribute to the sealing effectiveness ensureing cement seal layer.
Above-mentioned steps 2. in, also preferably one way valve is provided with in described guide head, the flow direction of described one way valve is arranged towards the direction of described flow-guiding mouth, thus ensure that the slurry in described Grouting Pipe from the annular space direction flowing between the introversive described Grouting Pipe of the pipe of described Grouting Pipe and described hole sealing tube, can avoid the slurry generation reflux problem in described Grouting Pipe.Those skilled in the art it should be noted, the present invention is not specifically limited the structure of described one way valve and size, as long as described one way valve can meet the one-way flow of cement slurry.
Certainly, for the ease of the connection of described one way valve and described Grouting Pipe, the present embodiment is preferably connected with the stationary pipes for plugging described Grouting Pipe above described one way valve, the end of described Grouting Pipe is plugged in described stationary pipes, described stationary pipes is communicated with described one way valve, thus fixing to described Grouting Pipe, achieve being communicated with of Grouting Pipe and one way valve simultaneously.
On the basis of above-described embodiment, the outer wall of the end of described Grouting Pipe also preferably offers multiple tracks annular recess, is preferably arranged with the sealing ring for sealing gap between described stationary pipes and described Grouting Pipe in described annular recess.When described Grouting Pipe being installed in described hole sealing tube, being plugged the end of described Grouting Pipe is fixed in described stationary pipes, thus make described sealing ring be clamped between the inwall of described stationary pipes and the outer wall of described Grouting Pipe, rely on the flexibility of described sealing ring to clog gap between described stationary pipes and described Grouting Pipe, guarantee that the slurry in described Grouting Pipe can not spill from the junction of described stationary pipes and described Grouting Pipe.
As a preferred embodiment of the present invention, the position-limited rack for limiting described Grouting Pipe relative position in described hole sealing tube is provided with between the outer wall of described Grouting Pipe and the inwall of described hole sealing tube, described position-limited rack is preferably trapezoidal limiting plate, it is more preferably isosceles trapezoid limiting plate, a base of described trapezoidal limiting plate is fixedly connected with the outer wall of described Grouting Pipe, another base of described trapezoidal limiting plate abuts with the inwall of described hole sealing tube, circumference around the outer wall of described Grouting Pipe is provided with multiple above-mentioned trapezoidal limiting plate, thus described Grouting Pipe is fixed on the axle center of described hole sealing tube, described trapezoidal limiting plate can not only limit the position of described Grouting Pipe, also effectively improve the stability maintenance of described Grouting Pipe, avoid it in the process of grout injection, described Grouting Pipe shakes in described hole sealing tube, and then improve the stationarity of grout pouring.What those skilled in the art should understand that is, the trapezoidal limiting plate that the present embodiment adopts is only a preferred embodiment of the present invention, the present invention can also fix known in those skilled in the art in described Grouting Pipe, be applicable to being arranged on the position-limited rack of other shape between described Grouting Pipe and described hole sealing tube or structure, repeat no more herein.
As a preferred embodiment of the present invention, described step 3. in also preferably include injected clear water in described Grouting Pipe, observe the water level in Grouting Pipe after 10min, if water level decreasing is no more than 0.2m, then prove that described Grouting Pipe does not exist leak source; If water level decreasing is more than 0.2m, then prove that described Grouting Pipe exists leak source, search described leak source and shutoff is carried out to described leak source.After determining that described Grouting Pipe does not exist leak source, cement paste can be pumped in described Grouting Pipe, ensure that the cement paste in Grouting Pipe can not seepage enter in described hole sealing tube, thus avoid the use affecting hole sealing tube.
As shown in Figure 2, present invention also offers a kind of hole sealing device of coal mine drilling, this hole sealing device comprises the boring 1 be opened in mine and the hole sealing tube 2 be arranged in described boring 1, annular space 3 is formed between described boring 1 and described hole sealing tube 2, the leading section of described hole sealing tube 2 is provided with arcuate guide 4, one end of described guide head 4 is docked with described hole sealing tube 2, and preferably by being welded and fixed together, the other end of described guide head 4 offers flow-guiding mouth, described hole sealing tube 2 internal fixtion has for the Grouting Pipe 5 to grout injection in described annular space 3, the mouth of pipe and the described flow-guiding mouth of described Grouting Pipe 5 are oppositely arranged.
During use, the cement slurry volume calculated is pumped in described Grouting Pipe 5, cement paste in Grouting Pipe 5 enters described annular space 3 by the mouth of pipe of described Grouting Pipe 5 lower end and described flow-guiding mouth successively, mud in described annular space is replaced out boring by described cement paste, and then fill up described annular space 3 by described cement paste, finally, namely the cement seal layer that the cement slurry sets in annular space 3 forms ring-type completes sealing of hole.Visible, the method for sealing of coal mine drilling provided by the invention is by Grouting Pipe cement injection, without the need to using plug, thus avoid the sealing of hole accident caused due to plug clamping stagnation, significantly reduce the risk of device fails, meanwhile, also avoid mud and cement mixed slurry section long, while ensure that the sealing of sealing of hole, reduce sealing material consumption.
Those skilled in the art it should be noted, the hole sealing device of coal mine drilling provided by the present invention is preferably applicable to the big diameter borehole that bore is greater than 300mm, the boring of larger aperture can provide larger space for described Grouting Pipe and cement seal layer, thus contributes to the sealing effectiveness ensureing described cement seal layer.
As a preferred embodiment of the present invention, also one way valve 6 is preferably provided with in described guide head 4, the flow direction of described one way valve 6 is arranged towards the direction of described flow-guiding mouth, thus ensure that the slurry in described Grouting Pipe 5 can, from the annular space direction flowing between the introversive described Grouting Pipe 5 of the pipe of described Grouting Pipe 5 and described hole sealing tube 2, avoid the slurry in described Grouting Pipe 5 to produce reflux problem.Those skilled in the art it should be noted, the present invention is not specifically limited the structure of described one way valve 6 and size, as long as described one way valve 6 can meet the one-way flow of cement slurry.
Certainly, for the ease of the connection of described one way valve 6 with described Grouting Pipe 5, the present embodiment is preferably connected with the stationary pipes for plugging described Grouting Pipe above described one way valve 6, more preferably, described stationary pipes is welded to connect the top at described one way valve 6, and the end of described Grouting Pipe 5 is plugged in described stationary pipes, and described stationary pipes is communicated with described one way valve 6, thus described Grouting Pipe 5 is fixed, achieve being communicated with of Grouting Pipe 5 and one way valve simultaneously.
On the basis of above-described embodiment, the outer wall of the end of described Grouting Pipe 5 also preferably offers multiple tracks annular recess, preferably be arranged with the sealing ring for sealing gap between described stationary pipes and described Grouting Pipe in described annular recess, described sealing ring is preferably made up of rubber.When described Grouting Pipe 5 is installed in described hole sealing tube 2, being plugged the end of described Grouting Pipe 5 is fixed in described stationary pipes, thus make described sealing ring be clamped between the inwall of described stationary pipes and the outer wall of described Grouting Pipe 5, rely on the flexibility of described sealing ring to clog gap between described stationary pipes and described Grouting Pipe 5, guarantee that the slurry in described Grouting Pipe 5 can not spill from the junction of described stationary pipes and described Grouting Pipe 5.
As a preferred embodiment of the present invention, the position-limited rack for limiting described Grouting Pipe 5 relative position in described hole sealing tube is provided with between the outer wall of described Grouting Pipe 5 and the inwall of described hole sealing tube 2, described position-limited rack is preferably trapezoidal limiting plate 7, it is more preferably isosceles trapezoid limiting plate, a base of described trapezoidal limiting plate 7 is fixedly connected with the outer wall of described Grouting Pipe 5, another base of described trapezoidal limiting plate 7 abuts with the inwall of described hole sealing tube 2, circumference around the outer wall of described Grouting Pipe 5 is provided with multiple above-mentioned trapezoidal limiting plate 7, thus described Grouting Pipe 5 is fixed on the axle center of described hole sealing tube 2, described trapezoidal limiting plate 7 can not only limit the position of described Grouting Pipe 5, also effectively improve the stability maintenance of described Grouting Pipe 5, avoid it in the process of grout injection, described Grouting Pipe 5 shakes in described hole sealing tube, and then improve the stationarity of grout pouring.What those skilled in the art should understand that is, the trapezoidal limiting plate that the present embodiment adopts is only a preferred embodiment of the present invention, the present invention can also fix known in those skilled in the art in described Grouting Pipe, be applicable to being arranged on the position-limited rack of other shape between described Grouting Pipe and described hole sealing tube or structure, repeat no more herein.
Last it is noted that above embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.

Claims (10)

1. a method for sealing for coal mine drilling, is characterized in that, comprises the following steps:
Step is 1.: in mine, offer boring, and arrange hole sealing tube in described boring, form annular space between described boring and described hole sealing tube;
Step is 2.: arrange arcuate guide head in the leading section of described hole sealing tube, one end of described guide head is docked with described hole sealing tube, and the other end of described guide head offers flow-guiding mouth;
Step is 3.: in described hole sealing tube internal fixtion Grouting Pipe, the mouth of pipe and the described flow-guiding mouth of described Grouting Pipe are oppositely arranged;
Step is 4.: in described Grouting Pipe, inject cement paste, and described cement paste enters described annular space through the mouth of pipe of described Grouting Pipe and described flow-guiding mouth;
Step is 5.: the mud in described annular space is replaced out described boring by described cement paste, is full of described cement paste and forms cement seal layer, namely complete sealing of hole in described annular space.
2. the method for sealing of coal mine drilling according to claim 1, is characterized in that, is provided with one way valve in described guide head, and the top of described one way valve is connected with the stationary pipes for plugging described Grouting Pipe.
3. the method for sealing of coal mine drilling according to claim 2, it is characterized in that, the outer wall of the end of described Grouting Pipe offers multiple tracks annular recess, is arranged with the sealing ring for sealing gap between described stationary pipes and described Grouting Pipe in described annular recess.
4. the method for sealing of coal mine drilling according to claim 1, is characterized in that, is provided with position-limited rack between the outer wall of described Grouting Pipe and the inwall of described hole sealing tube.
5. the method for sealing of coal mine drilling according to claim 4, it is characterized in that, described position-limited rack is trapezoidal limiting plate, and a base of described trapezoidal limiting plate is fixedly connected with the outer wall of described Grouting Pipe, and another base of described trapezoidal limiting plate abuts with the inwall of described hole sealing tube.
6. the method for sealing of coal mine drilling according to claim 1, it is characterized in that, 3. described step also comprises injected clear water in described Grouting Pipe, observes the water level in described Grouting Pipe after 10min, if water level decreasing is no more than 0.2m, then prove that described Grouting Pipe does not exist leak source; If water level decreasing is more than 0.2m, then prove that described Grouting Pipe exists leak source, search described leak source and shutoff is carried out to described leak source.
7. the hole sealing device of a coal mine drilling, it is characterized in that, comprise the boring be opened in mine and the hole sealing tube be arranged in described boring, annular space is formed between described boring and described hole sealing tube, the leading section of described hole sealing tube is provided with arcuate guide head, one end of described guide head is docked with described hole sealing tube, the other end of described guide head offers flow-guiding mouth, described hole sealing tube internal fixtion has for the Grouting Pipe to grout injection in described annular space, and the mouth of pipe and the described flow-guiding mouth of described Grouting Pipe are oppositely arranged.
8. the hole sealing device of coal mine drilling according to claim 7, is characterized in that, is provided with one way valve in described guide head, and the top of described one way valve is connected with the stationary pipes for plugging described Grouting Pipe.
9. the hole sealing device of coal mine drilling according to claim 8, it is characterized in that, the outer wall of the end of described Grouting Pipe offers multiple tracks annular recess, is arranged with the sealing ring for sealing gap between described stationary pipes and described Grouting Pipe in described annular recess.
10. the hole sealing device of the coal mine drilling according to any one of claim 7-9, it is characterized in that, trapezoidal limiting plate is provided with between the outer wall of described Grouting Pipe and the inwall of described hole sealing tube, a base of described trapezoidal limiting plate is fixedly connected with the outer wall of described Grouting Pipe, and another base of described trapezoidal limiting plate abuts with the inwall of described hole sealing tube.
CN201410574967.0A 2014-10-23 2014-10-23 Method and device for sealing coal mine drilled hole Pending CN104314515A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410574967.0A CN104314515A (en) 2014-10-23 2014-10-23 Method and device for sealing coal mine drilled hole

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410574967.0A CN104314515A (en) 2014-10-23 2014-10-23 Method and device for sealing coal mine drilled hole

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CN104314515A true CN104314515A (en) 2015-01-28

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Publication number Priority date Publication date Assignee Title
US5106423A (en) * 1988-12-02 1992-04-21 Geochemical Corporation Formation grouting method and composition useful therefor
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RU2498047C1 (en) * 2012-06-01 2013-11-10 Открытое акционерное общество "Татнефть" имени В.Д. Шашина Method for making-up grouting compound in well
CN203452084U (en) * 2013-08-31 2014-02-26 曹兴明 Sleeve type bottom-conveying rear grouting device for later-inserted pipe
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5106423A (en) * 1988-12-02 1992-04-21 Geochemical Corporation Formation grouting method and composition useful therefor
CN1238411A (en) * 1998-06-08 1999-12-15 中外合资柳州欧维姆建筑机械有限公司 Pull-pressure dispersed protecting anchor cable and its construction method
CN1884790A (en) * 2006-07-06 2006-12-27 宋彦波 Grouting sealing method and apparatus for borehole and conductor pipe for water prospection of mine
CN101749987A (en) * 2009-12-07 2010-06-23 李凤仪 Long borehole blast charging device and method
CN201610734U (en) * 2010-02-20 2010-10-20 淮南矿业(集团)有限责任公司 Hole sealing pipe and hole sealing device
RU2498047C1 (en) * 2012-06-01 2013-11-10 Открытое акционерное общество "Татнефть" имени В.Д. Шашина Method for making-up grouting compound in well
CN203452084U (en) * 2013-08-31 2014-02-26 曹兴明 Sleeve type bottom-conveying rear grouting device for later-inserted pipe
CN204283319U (en) * 2014-10-23 2015-04-22 神华集团有限责任公司 A kind of hole sealing device of coal mine drilling

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