CN106409370A - Low-medium radioactive waste disposal repository and method with airborne radioactive filtering and discharging function - Google Patents
Low-medium radioactive waste disposal repository and method with airborne radioactive filtering and discharging function Download PDFInfo
- Publication number
- CN106409370A CN106409370A CN201610992490.7A CN201610992490A CN106409370A CN 106409370 A CN106409370 A CN 106409370A CN 201610992490 A CN201610992490 A CN 201610992490A CN 106409370 A CN106409370 A CN 106409370A
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- low
- fine sand
- clay
- airborne
- ventilative
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Classifications
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
- G21F9/02—Treating gases
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
- G21F9/04—Treating liquids
- G21F9/06—Processing
- G21F9/12—Processing by absorption; by adsorption; by ion-exchange
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
- G21F9/04—Treating liquids
- G21F9/20—Disposal of liquid waste
- G21F9/22—Disposal of liquid waste by storage in a tank or other container
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a low-medium radioactive waste disposal repository with an airborne radioactive filtering and discharging function. An annular groove for filling fine sand is arranged in an inner lining; a ventilated concrete plate is arranged at the top of the inner lining; a crushed rock layer is arranged at the top of the ventilated concrete plate; and an inner ventilated concrete wall, an outer ventilated concrete wall and a filtering fine sand layer are arranged at a connecting part of a conveying and unloading channel and a top cover. The invention further discloses a low-medium radioactive waste disposal method with the airborne radioactive filtering and discharging function; the method comprises the following steps: building the inner lining; fully filling fine sand into a gap between the inner lining and a waste bag; pouring the ventilated concrete plate into the top of the inner lining and stacking at the top of the ventilated concrete plate to form the crushed rock layer; and building the inner ventilated concrete wall, the outer ventilated concrete wall and the filtering fine sand layer in the conveying and unloading channel. The low-medium radioactive waste disposal repository and method, provided by the invention, can prevent a condition that gas is accumulated and has excessive pressure to influence a cave structure, and can also be used for filtering radioactive substances in aerosol, without influences on water resistance of a cave, so that the low-medium radioactive waste disposal repository and method can be widely applied to the field of nuclear power.
Description
Technical field
The present invention relates to nuclear power field, more particularly to a kind of have airborne radioactivity filtering emission function low in put useless
Thing disposes storehouse and method.
Background technology
According to China's relevant laws and regulations, for the low and intermediate level radioac of nuclear power plant's generation, typically using the method for near surface disposal,
But for long-life low and intermediate level radioac therein, with reference to international experience, then need using treatment depth deeper grotto type
Dispose.Grotto disposes storehouse typically forms such as tunnel formula, silo-type, wherein silo-type due to treatment depth deeper, be generally used to
Dispose medium-level waste.
Put in low that to dispose the constructions principle in storehouse be exactly to ensure containing to radioactive substance in the time of 300-500, anti-
Only nucleic moves in environment with underground water and gas.Put airborne radioactivity material in disposal storehouse in low and be mainly aerosol shape
Formula, gas source mainly includes：The corrosion hydrogen of silo lining concrete reinforcing bar, waste steel drum and steel case；Microbial decomposition gas
Body；Debirs irradiation-induced degradation gas etc., the gas that radionuclide is carried for these, first have to ensure that disposing storehouse backfill closes
Close rear gas and can discharge cavern, particularly with the silo that longitudinal treatment depth is deeper, prevent gas buildup superpressure to cavern
The impact of structural stability, on the other hand, radioaerosol will prevent nucleic with gas through filtering before excluding from cavern
Body migrates.It is thus desirable to the selection of concern cavern's backfilling material and plugging material and arrangement.
Storehouse disposed by the domestic at present grotto type also not built up, and in external relevant report, silo-type disposes the backfill material in storehouse
Material mainly has three kinds of forms.The first carries out entirety using gas permeability cement mortar and is in the milk it is ensured that gas discharges, but water
Cement mortar is poor to the adsorption effect of nucleic, and waterproof action is also general；Second adopts gravel or cataclasite, and backfill gas permeability is relatively
Good, but the absorption to nucleic and integral waterproofing effect are poor；The third adopts clay to backfill, and the high adsorption of clay can block
Nuclein migration, but permeability is slightly worse.
Content of the invention
The invention aims to overcoming the shortcomings of above-mentioned background technology, providing one kind to have airborne radioactivity and filtering row
The low and intermediate level radioac of playing function disposes storehouse and method so as to both can guarantee that the release of gas in cavern, prevents gas buildup superpressure
Impact is produced on cavern's structure, enables the radioactive substance in aerosol is filtered again, prevent nucleic with gas transfer,
Can also ensure not affecting the water-proof function of cavern.
A kind of low and intermediate level radioac with airborne radioactivity filtering emission function that the present invention provides disposes storehouse, including being provided with
The underground silo of inside lining, outer lining cutting and top cover, described top cover side is provided with transport discharge channel, is provided with and fills out in described inside lining
The filling fine sand annular groove in full gap between inside lining and waste bag, described inside lining top is provided with periphery and is connected with outer lining cutting side wall
Ventilative concrete slab, described ventilative concrete slab top is provided with the crushing rock stratum extending to underground silo top cover, described transport
Discharge channel and top cover connecting place are provided with interior ventilative concrete walls, and described transport discharge channel is provided near one end of outlet and passes through inside
Gas concrete walls, the cavity between described interior ventilative concrete walls and outer ventilative concrete walls is provided with filtration fine sand layer.
In technique scheme, between described ventilative concrete slab and crushing rock stratum, it is provided with top clay building block layer, institute
State and be provided with air-vent between each clay building block of top clay building block layer.
In technique scheme, in described air-vent, it is inoculated with fine sand.
In technique scheme, the cavity between described inside lining and outer lining cutting is provided with ring-type clay layer.
In technique scheme, outside described outer ventilative concrete walls, it is provided with passage clay blockwork.
A kind of low and intermediate level radioac method of disposal with airborne radiogen filtering emission function that the present invention provides, including
Following steps：First, build with outer lining cutting inside lining at a distance in the silo of underground by laying bricks or stones, when waste bag reaches disposal capacity
Afterwards, fine sand is filled up in the gap between inside lining and waste bag, forms filling fine sand annular groove；2nd, pour week inside lining top
The ventilative concrete slab that edge is connected with outer lining cutting side wall, and pile up cataclasite until top cover at ventilative concrete slab top, formed
Crushing rock stratum；3rd, build interior ventilative concrete walls by laying bricks or stones in transport discharge channel and top cover connecting place, transport discharge channel close go out
One end of mouth builds outer ventilative concrete walls by laying bricks or stones, and the cavity between interior ventilative concrete walls and outer ventilative concrete walls fills up carefully
Sand, forms and filters fine sand layer.
In technique scheme, in described step one, the cavity between inside lining and outer lining cutting stacks clay building block,
Form ring-type clay layer；In described step 2, after having poured ventilative concrete slab, clay building block is stacked on ventilative concrete slab
Form top clay building block layer, when stacking clay building block, reserve air-vent, and fill fine sand in air-vent, then again at top
Pile up cataclasite in clay building block layer, form crushing rock stratum；In described step 3, outside concrete walls of breathing freely outside, stack clay
Building block, forms passage clay blockwork.
In technique scheme, described air-vent horizontal spacing is smaller in size than 1 centimetre.
In technique scheme, the height of building by laying bricks or stones of described inside lining is maintained an equal level with the stacking height of waste bag.
The low and intermediate level radioac that the present invention has airborne radioactivity filtering emission function disposes storehouse and method, has following beneficial
Effect：After the disposal storehouse of silo reaches disposal capacity, with top layout clay building block outside disposal area, the high adsorption of clay is real
The now retardance to nucleic, the impermeability of clay can prevent or block the invasion of underground water, and the stacking gap of clay building block can
To ensure the release of gas.The crushing rock stratum of silo top cover and ventilative concrete slab as gas release channel, and can transport
Fine sand in discharge channel also has aerosol nucleic filtering function while as gas release channel.Protected by the present invention
Demonstrate,prove the release of gas in silo, prevented cavern's gas buildup superpressure, achieved to airborne radiation by clay and fine sand simultaneously
The absorption of property material and filtration, prevent and have blocked the migration of airborne nucleic.
Brief description
The 1 structure section view that the low and intermediate level radioac that Fig. 1 has airborne radioactivity filtering emission function for the present invention disposes storehouse is shown
It is intended to.
Specific embodiment
Below in conjunction with the accompanying drawings and embodiment the present invention is described in further detail, but this embodiment should not be construed as right
The restriction of the present invention.
Referring to Fig. 1, the low and intermediate level radioac that the present invention has airborne radioactivity filtering emission function disposes storehouse, including in being provided with
The underground silo 1 of lining cutting 1.1, outer lining cutting 1.2 and top cover 1.3, described top cover 1.3 side is provided with transport discharge channel 13, described
It is provided with the filling fine sand annular groove 4 filling up gap between inside lining 1.1 and waste bag 2, described inside lining 1.1 is pushed up in inside lining 1.1
Portion is provided with the ventilative concrete slab 5 that periphery is connected with outer lining cutting 1.2 side wall, and described ventilative concrete slab 5 top is provided with and extends to
The crushing rock stratum 8 of underground silo 1 top cover 1.3, described transport discharge channel 13 is provided with interior ventilative concrete with top cover 1.3 connecting place
Wall 9, described transport discharge channel 13 is provided with outer ventilative concrete walls 11, described interior ventilative concrete walls 9 near one end of outlet
Cavity and outer ventilative concrete walls 11 between is provided with filtration fine sand layer 10.
It is provided with top clay building block layer 6, the clay building block of described top between described ventilative concrete slab 5 and crushing rock stratum 8
It is provided with air-vent 7 between layer 6 each clay building block.It is inoculated with fine sand in described air-vent 7.
Cavity between described inside lining 1.1 and outer lining cutting 1.2 is provided with ring-type clay layer 3.
It is provided with passage clay blockwork 12 outside described outer ventilative concrete walls 11.
The present invention has the low and intermediate level radioac method of disposal of airborne radiogen filtering emission function, comprises the steps：
Step one, build inside lining 1.1 at a distance, described inside lining with outer lining cutting 1.2 in underground silo 1 by laying bricks or stones
1.1 height of building by laying bricks or stones is maintained an equal level with the stacking height of waste bag 2, after waste bag 2 reaches disposal capacity, inside lining 1.1 with useless
Fine sand is filled up in gap between thing bag 2, forms filling fine sand annular groove 4, the cavity heap between inside lining 1.1 and outer lining cutting 1.2
Put clay building block, form ring-type clay layer 3；
Step 2, pour, inside lining 1.1 top, the ventilative concrete slab 5 that periphery is connected with outer lining cutting 1.2 side wall, saturating
Clay building block is stacked on gas concrete slab 5 and forms top clay building block layer 6, when stacking clay building block, reserve air-vent 7, described
Pore 7 horizontal spacing is smaller in size than 1 centimetre, and fills fine sand, then heap in top clay building block layer 6 again in air-vent 7
Overstocked detritus, until top cover 1.3, forms crushing rock stratum 8；
Step 3, build interior ventilative concrete walls 9 in transport discharge channel 13 by laying bricks or stones with top cover 1.3 connecting place, in transport unloading
Passage 13 builds outer ventilative concrete walls 11 by laying bricks or stones, in interior ventilative concrete walls 9 and outer ventilative concrete walls 11 near one end of outlet
Between cavity fill up fine sand, formed and filter fine sand layer 10, concrete walls 11 outside stacking clay building block of breathing freely outside, formed logical
Road clay blockwork 12.
The principle of the present invention is as follows：For Waste disposal underground silo 1 reach dispose capacity after, need backfilled
Closure, finally implements to close to disposal site.But the structure within the disposal cycle of 300 to 500 years, in underground silo 1 lining cutting
Reinforcing bar, and the steel case of waste bag 2 or steel drum can be due to the corrosion generation hydrogen of underground water, and resin in waste bag 2 etc. has
Machine material can produce degraded gas under radiation environment, comprise additionally in subterranean microorganisms and decompose the gas producing, in the cycle of disposal
The accumulation of interior gas can affect the structural stability of underground silo 1, and gas need to be discharged.Aerosol during gas release simultaneously
Also radionuclide can be carried migrated, therefore gas needs to carry out filtration treatment before discharging cavern.But according to disposal site
Design principle it is desirable to disposal site close after as few as possible it being monitored and safeguards, hence with mechanical mode
Airborne radioactivity is filtered and is discharged inadvisable.
The present invention is by being combined to various conventional backfilling materials it is ensured that carrying out to it while gas discharges
Filter, ensure that the waterproof of cavern simultaneously.Underground silo 1 adopts double linings, and the height of inside lining 1.1 is pre- with waste bag 2
The stacking height of meter is substantially fair, and the ring-type clay layer 3 of filling clay building block composition between inside and outside lining cutting, for waterproof and retardance
Nuclein migration.After waste bag 2 reaches disposal capacity, the gap between inside lining 1.1 and waste bag 2 is using filling fine sand annular groove 4
It is filled with.When waste bag 2 reaches disposal height, top pours one layer of ventilative concrete slab 5 to the outer lining cutting of underground silo 1
1.2 inwall.Two to three layers of top clay building block layer 6 is stacked on the top of ventilative concrete slab 5, as the waterproof layer at top,
Top clay building block layer 6 reserves air-vent 7 as exhaust passage when piling up, water is met in the building block for preventing top clay building block layer 6
Inter-adhesive afterwards, it is filled with fine sand in air-vent 7.The remaining space of underground silo 1 top cover 1.3 is filled out with cataclasite
Fill formation crushing rock stratum 8, the so far filling fine sand annular groove 4 in underground silo 1, ventilative concrete slab 5, air-vent 7 and top pressure
Detritus layer 8 is the formation of the discharge channel of underground silo 1 internal gas.
After exhaust passage within underground silo 1 is formed, the gas in underground silo 1 needs to discharge underground silo 1, therefore
The transport discharge channel 13 at design underground silo 1 top is as the floss hole of gas.Because gas carries radionuclide, simultaneously
For the consideration of waterproof, need transport discharge channel 13 to be blocked and fills.First in the top discharging hatch of underground silo 1
Pour ventilative concrete walls 9 in together, the certain thickness fine sand of outside filling of interior ventilative concrete walls 9 forms and filters fine sand layer
10, filter fine sand layer 10 and while ventilative, the aerosol carrying nucleic is filtered.After filtration fine sand layer 10 construction finishes,
Pour together outer ventilative concrete walls 11 outside it again the fine sand filtering fine sand layer 10 is blocked, prevent thin after the long period
Husky loss.The outside of ventilative concrete walls 11 is stacked into passage clay blockwork 12 with several layers of clay building block again and carries out finally outward
Closure, prevents underground water from entering underground silo 1.Finally, through the combination of various backfilling materials, the gas of generation in underground silo 1
Body transports discharge conveyor passage 13 by top after filtration and discharges, and is communicated to external ventilation passage (not shown) and vertical shaft
(not shown), and it is finally exhausted to external environment condition.
Obviously, those skilled in the art can carry out the various changes and modification essence without deviating from the present invention to the present invention
God and scope.So, if these modifications of the present invention and modification belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprise these changes and modification.
The content not being described in detail in this specification belongs to prior art known to professional and technical personnel in the field.
Claims (10)
1. a kind of low and intermediate level radioac with airborne radioactivity filtering emission function disposes storehouse, includes being provided with inside lining (1.1), outward
The underground silo (1) of lining cutting (1.2) and top cover (1.3), described top cover (1.3) side is provided with transport discharge channel (13), and it is special
Levy and be：It is provided with the filling fine sand annular groove filling up gap between inside lining (1.1) and waste bag (2) in described inside lining (1.1)
(4), described inside lining (1.1) top is provided with the ventilative concrete slab (5) that periphery is connected with outer lining cutting (1.2) side wall, described
Gas concrete slab (5) top is provided with the crushing rock stratum (8) extending to underground silo (1) top cover (1.3), described transport discharge channel
(13) it is provided with interior ventilative concrete walls (9) with top cover (1.3) connecting place, described transport discharge channel (13) is near one end of outlet
It is provided with outer ventilative concrete walls (11), the cavity between described interior ventilative concrete walls (9) and outer ventilative concrete walls (11) sets
There is filtration fine sand layer (10).
2. the low and intermediate level radioac with airborne radioactivity filtering emission function according to claim 1 disposes storehouse, its feature
It is：It is provided with top clay building block layer (6), described top clay is built between described ventilative concrete slab (5) and crushing rock stratum (8)
It is provided with air-vent (7) between each clay building block of block layer (6).
3. the low and intermediate level radioac with airborne radioactivity filtering emission function according to claim 2 disposes storehouse, its feature
It is：It is inoculated with fine sand in described air-vent (7).
4. the low and intermediate level radioac with airborne radioactivity filtering emission function according to any one of claim 1 is disposed
Storehouse it is characterised in that：Cavity between described inside lining (1.1) and outer lining cutting (1.2) is provided with ring-type clay layer (3).
5. the low and intermediate level radioac with airborne radioactivity filtering emission function according to any one of claim 1 is disposed
Storehouse it is characterised in that：It is provided with passage clay blockwork (12) outside described outer ventilative concrete walls (11).
6. the low and intermediate level radioac with airborne radioactivity filtering emission function according to claim 5 disposes storehouse, its feature
It is：Described ventilative concrete slab (5), interior ventilative concrete walls (9) and outer ventilative concrete walls (11) are celluar concrete
Structure.
7. a kind of low and intermediate level radioac method of disposal with airborne radiogen filtering emission function it is characterised in that：Including such as
Lower step：
Step one, build the inside lining (1.1) at a distance with outer lining cutting (1.2) in underground silo (1) by laying bricks or stones, when waste bag
(2) after reaching disposal capacity, fine sand is filled up in the gap between inside lining (1.1) and waste bag (2), forms filling fine sand annular groove
(4)；
Step 2, pour, inside lining (1.1) top, the ventilative concrete slab (5) that periphery is connected with outer lining cutting (1.2) side wall, and
Pile up cataclasite until top cover (1.3) at ventilative concrete slab (5) top, form crushing rock stratum (8)；
Step 3, transport discharge channel (13) with top cover (1.3) connecting place build interior ventilative concrete walls (9) by laying bricks or stones, unload in transport
Goods passage (13) builds outer ventilative concrete walls (11) by laying bricks or stones near one end of outlet, mixes in interior ventilative concrete walls (9) and outer breathing freely
Cavity between solidifying cob wall (11) fills up fine sand, is formed and filters fine sand layer (10).
8. the low and intermediate level radioac method of disposal with airborne radiogen filtering emission function according to claim 7, its
It is characterised by：In described step one, the cavity between inside lining (1.1) and outer lining cutting (1.2) stacks clay building block, forms ring
Shape clay layer (3)；
In described step 2, after having poured ventilative concrete slab (5), formed in ventilative concrete slab (5) upper stacking clay building block
Top clay building block layer (6), reserves air-vent (7) when stacking clay building block, and filling fine sand, Ran Houzai in air-vent (7)
In the upper accumulation in top clay building block layer (6) cataclasite, form crushing rock stratum (8)；
In described step 3, stack clay building block outside concrete walls (11) of breathing freely outside, form passage clay blockwork (12).
9. the low and intermediate level radioac method of disposal with airborne radiogen filtering emission function according to claim 8, its
It is characterised by：Described air-vent (7) horizontal spacing is smaller in size than 1 centimetre.
10. the low and intermediate level radioac with airborne radiogen filtering emission function according to any one of claim 7 to 9
Method of disposal it is characterised in that：The height of building by laying bricks or stones of described inside lining (1.1) is maintained an equal level with the stacking height of waste bag (2).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610992490.7A CN106409370B (en) | 2016-11-11 | 2016-11-11 | Low and intermediate level radioac disposition library with airborne radioactivity filtering emission function and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610992490.7A CN106409370B (en) | 2016-11-11 | 2016-11-11 | Low and intermediate level radioac disposition library with airborne radioactivity filtering emission function and method |
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| CN106409370A true CN106409370A (en) | 2017-02-15 |
| CN106409370B CN106409370B (en) | 2018-08-07 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108461170A (en) * | 2018-04-24 | 2018-08-28 | 海南大学 | A kind of novel Deep Geological Disposal of High-level Radioactive Wastes padded coaming and its construction method |
| TWI748471B (en) * | 2019-05-23 | 2021-12-01 | 美商西屋電器公司 | Passive venting arrangement for venting of gases from radioactive materials and containment vessel for storing such materials |
| CN113903486A (en) * | 2021-10-11 | 2022-01-07 | 中国核电工程有限公司 | Method and structure for disposing low-reclaimed-water horizontal radioactive waste rock cavern |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108461170A (en) * | 2018-04-24 | 2018-08-28 | 海南大学 | A kind of novel Deep Geological Disposal of High-level Radioactive Wastes padded coaming and its construction method |
| TWI748471B (en) * | 2019-05-23 | 2021-12-01 | 美商西屋電器公司 | Passive venting arrangement for venting of gases from radioactive materials and containment vessel for storing such materials |
| CN113903486A (en) * | 2021-10-11 | 2022-01-07 | 中国核电工程有限公司 | Method and structure for disposing low-reclaimed-water horizontal radioactive waste rock cavern |
| CN113903486B (en) * | 2021-10-11 | 2024-02-23 | 中国核电工程有限公司 | Method and structure for low-medium level radioactive waste cave disposal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106409370B (en) | 2018-08-07 |
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