CN113530598B - Uranium exceeding tunnel water treatment process - Google Patents
Uranium exceeding tunnel water treatment process Download PDFInfo
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- CN113530598B CN113530598B CN202110784912.2A CN202110784912A CN113530598B CN 113530598 B CN113530598 B CN 113530598B CN 202110784912 A CN202110784912 A CN 202110784912A CN 113530598 B CN113530598 B CN 113530598B
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- water
- concrete
- tunnel
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- gushing
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims abstract description 37
- 229910052770 Uranium Inorganic materials 0.000 title claims abstract description 32
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 239000011435 rock Substances 0.000 claims abstract description 64
- 239000004567 concrete Substances 0.000 claims abstract description 63
- 238000005507 spraying Methods 0.000 claims abstract description 32
- 238000005553 drilling Methods 0.000 claims abstract description 23
- 239000004744 fabric Substances 0.000 claims abstract description 17
- 238000010276 construction Methods 0.000 claims abstract description 13
- 239000003864 humus Substances 0.000 claims abstract description 13
- 239000002689 soil Substances 0.000 claims abstract description 13
- 238000011049 filling Methods 0.000 claims abstract description 12
- 239000002131 composite material Substances 0.000 claims abstract description 11
- WDIHJSXYQDMJHN-UHFFFAOYSA-L barium chloride Chemical compound [Cl-].[Cl-].[Ba+2] WDIHJSXYQDMJHN-UHFFFAOYSA-L 0.000 claims abstract description 10
- 229910001626 barium chloride Inorganic materials 0.000 claims abstract description 10
- 229910052979 sodium sulfide Inorganic materials 0.000 claims abstract description 10
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 7
- 239000010959 steel Substances 0.000 claims abstract description 7
- 239000004568 cement Substances 0.000 claims description 28
- 238000004873 anchoring Methods 0.000 claims description 10
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- 239000011378 shotcrete Substances 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 8
- 239000002002 slurry Substances 0.000 claims description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 239000005416 organic matter Substances 0.000 claims description 3
- 238000007664 blowing Methods 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- 241000269793 Cryothenia peninsulae Species 0.000 claims 2
- 210000003462 vein Anatomy 0.000 abstract description 8
- 238000001556 precipitation Methods 0.000 abstract description 6
- 238000001179 sorption measurement Methods 0.000 abstract description 6
- 238000011010 flushing procedure Methods 0.000 abstract description 5
- 238000011272 standard treatment Methods 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 239000011398 Portland cement Substances 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 239000004575 stone Substances 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F16/00—Drainage
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices, or the like
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
Abstract
The invention discloses a uranium exceeding tunnel water treatment process, which comprises the steps of plugging water-flushing cracks by drilling holes on surrounding rocks of the tunnel, spraying concrete on the surface of the surrounding rocks, filling the interior of the tunnel (through vein) with humus soil, sodium sulfide and barium chloride, and sealing the tunnel mouth (through vein mouth) with a concrete wall embedded in the surrounding rocks. The process is simple in construction, the surrounding rock cracks of the water burst surrounding rock are plugged, then the surrounding rock is reinforced by using a steel wire mesh and concrete, and then the surrounding rock is reinforced again by using the composite waterproof cloth and concrete, so that the occurrence of crack conditions of the surrounding rock of the tunnel is greatly reduced, even if tiny cracks occur again in the surrounding rock of the tunnel, the composite waterproof cloth also ensures that tunnel water cannot enter underground water through the cracks, the discovery of the situation that tunnel water flows out of the cracks of the closed-pit uranium mine is greatly reduced, and the aim of one-time standard treatment is achieved by adopting humus soil, sodium sulfide and barium chloride filling, and the economical efficiency is superior to that of an adsorption process and a precipitation process.
Description
Technical Field
The invention relates to the technical field of tunnel treatment, in particular to a uranium exceeding tunnel water treatment process.
Background
The exploration or development project of uranium ore or radioactive element associated ore deposit, because the exploration project perturbs the natural circulation system of groundwater and the geochemical environment, such as the mine engineering forms uranium out-of-standard mine water after uncovering the high-concentration water-bearing layer of natural uranium, and the natural uranium concentration of the project wastewater discharge outlet exceeds the discharge standard of 300 mug/l of the' radiation protection and environmental protection regulations for uranium mining (GB 2327-2020) after flowing into the surface water system, the environmental problems must be treated according to the requirements of the green geological exploration and mine construction specifications.
The treatment of uranium exceeding water is always a difficult problem for the treatment of radiation environment. For the hard rock uranium mine uranium exceeding water, an adsorption process and a precipitation process are mainly adopted for treatment. Because the adsorption process, the precipitation process and other processes need long-term operation of equipment, the adsorption process and the precipitation process are adopted in the uranium mine production stage to treat the uranium exceeding water, so that the uranium mine production stage is economically feasible; however, for closed-pit uranium mines and uranium mine exploration projects, after the surrounding rock of water gushes in the pits of the closed-pit uranium mines is cracked, tunnel water is collected in most cases, and then the adsorption process and the precipitation process are used for treating the uranium exceeding standard water, so that the method has the characteristic of long-term investment of manpower and material resources, and is very uneconomical.
Disclosure of Invention
The invention aims to provide a uranium exceeding tunnel water treatment process, which solves the problem of the uranium exceeding tunnel water treatment process provided in the background art by arranging a certain mechanism or structure.
In order to achieve the above purpose, the present invention provides the following technical solutions: the uranium exceeding tunnel water treatment process comprises the following steps:
firstly, drilling holes on water-gushing surrounding rocks of tunnels, and then injecting cement paste into the drilled holes to seal water-gushing cracks of the water-gushing surrounding rocks;
secondly, grouting cement in holes of the water-gushing surrounding rock holes, hanging an iron wire net on the surface of the water-gushing surrounding rock after the cement is solidified, and then carrying out concrete spraying protection on the hanging net;
thirdly, after the sprayed concrete at the hanging net is solidified, hanging composite waterproof cloth on the outer wall of the sprayed concrete, tying the outer part of the waterproof cloth into a grid shape by using steel bars, and then spraying the concrete at the hanging waterproof cloth again;
fourthly, filling the tunnel (through vein), and filling humus soil, sodium sulfide and barium chloride in the tunnel (through vein);
and fifthly, closing the pit opening, wherein the pit opening (pulse penetrating opening) is closed by a concrete wall embedded with surrounding rock.
Preferably, in the first step, a grouting hole is drilled at a position 1m away from the water-gushing crack on one side of the surrounding rock water-gushing crack by a phi 89 drill bit, the included angle between the grouting hole and the rock crack trend is 45 degrees, the quantity is determined by the quantity and the length of the water-gushing crack, and the depth is 0.3m through the water-gushing crack.
Preferably, after drilling grouting holes, blowing out the drilled holes by high-pressure air and high-pressure water, installing phi 75 grouting pipes, fixing pipe orifices by using an anchoring agent, after the anchoring agent is solidified, pressing clean water to clean crack fillers, controlling the water pressure at 2MPa, finishing water injection after the peripheral cracks outflow water is clean and the flow is stable, and finally, injecting cement slurry with the cement-cement ratio of 1:1, and finishing grouting when the slurry flows out of the cracks.
Preferably, in the second construction step, after grouting cement in the grouting holes is solidified, drilling holes with construction spacing of 1m multiplied by 1m and phi 20 with depth of 0.6m in the range of 1m according to the area of the water-gushed surrounding rock, inserting an expansion anchor rod with length of 0.6m, exposing the anchor rod to the drill hole for 5cm, installing No. 6 wire netting with thickness of 50mm multiplied by 50mm, spraying C30 fine concrete with thickness of 0.1m, spraying the C30 fine concrete for 3 times, each time with thickness of not more than 0.05m, and spraying the concrete for the next time after the last sprayed concrete is solidified.
Preferably, after the concrete sprayed in the second step is solidified, the construction space is further expanded by 0.6m multiplied by 0.6m and phi 10 holes with the depth of 0.5m are drilled according to the area of the water-gushing surrounding rock, an expansion anchor rod with the length of 0.5m is inserted, the anchor rod is exposed out of a drilling hole opening by 3cm, a composite waterproof cloth with the length of 60mm multiplied by 60mm is installed, then reinforcing steel bars with the diameter of 6mm are used for being bundled into a reinforcing steel bar net according to the area of the surrounding rock in a transverse and vertical arrangement mode, then C30 fine concrete with the thickness of 5cm is sprayed, the C30 fine concrete is sprayed for 3 times, the thickness of each time is not more than 1.5cm, and the next spraying is performed after the concrete sprayed last time is solidified.
Preferably, humus soil, sodium sulfide and barium chloride in the fourth step are prepared by adopting a JZC150 concrete mixer according to the mass ratio of 1000:5:1, and the organic matter content of the humus soil is more than 1.5%.
Preferably, in the fifth step, C20 concrete walls with surrounding rocks embedded in the periphery are built at the pits (pulse through holes), and gaps between the concrete walls and the surrounding rocks are plugged by injecting 1:1 cement paste.
Compared with the prior art, the invention has the beneficial effects that:
the process is simple in construction, the surrounding rock cracks of the water burst surrounding rock are plugged, then the surrounding rock is reinforced by using a steel wire mesh and concrete, and then the surrounding rock is reinforced again by using the composite waterproof cloth and concrete, so that the occurrence of crack conditions of the surrounding rock of the tunnel is greatly reduced, even if tiny cracks occur again in the surrounding rock of the tunnel, the composite waterproof cloth also ensures that tunnel water cannot enter underground water through the cracks, the discovery of the situation that tunnel water flows out of the cracks of the closed-pit uranium mine is greatly reduced, and the aim of one-time standard treatment is achieved by adopting humus soil, sodium sulfide and barium chloride filling, and the economical efficiency is superior to that of an adsorption process and a precipitation process.
Drawings
FIG. 1 is a process flow diagram of the present invention;
FIG. 2 is a diagram of a perforation grouting process of surrounding rock of a water flushing gallery in accordance with the present invention;
FIG. 3 is a diagram of a water flushing gallery surrounding rock screening and spraying process according to the invention;
FIG. 4 is a diagram of a filling process of a water flushing gallery (through pulse) according to the invention;
fig. 5 is a process diagram of the closing of the tunnel mouth of the water flushing tunnel (through pulse) according to the invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-5, an embodiment of the present invention is provided: the uranium exceeding tunnel water treatment process comprises the following steps:
firstly, drilling holes on water-gushing surrounding rocks of tunnels, and then injecting cement paste into the drilled holes to seal water-gushing cracks of the water-gushing surrounding rocks;
secondly, grouting cement in holes of the water-gushing surrounding rock holes, hanging an iron wire net on the surface of the water-gushing surrounding rock after the cement is solidified, and then carrying out concrete spraying protection on the hanging net;
thirdly, after the sprayed concrete at the hanging net is solidified, hanging composite waterproof cloth on the outer wall of the sprayed concrete, tying the outer part of the waterproof cloth into a grid shape by using steel bars, and then spraying the concrete at the hanging waterproof cloth again;
fourthly, filling the tunnel (through vein), and filling humus soil, sodium sulfide and barium chloride in the tunnel (through vein);
and fifthly, closing the pit opening, wherein the pit opening (pulse penetrating opening) is closed by a concrete wall embedded with surrounding rock.
Specifically, in the first step, firstly, a grouting hole is drilled at a position 1m away from the water-gushing crack of the surrounding rock, the included angle between the grouting hole and the rock crack is 45 degrees, the quantity is determined by the quantity and the length of the water-gushing cracks, the depth is 0.3m through the water-gushing crack, after the drilling and grouting hole are finished, the drilling hole is blown clean by high-pressure air and high-pressure water, a phi 75 grouting pipe is installed, a pipe orifice is fixed by an anchoring agent, after the anchoring agent is solidified, clear water is pressed in to clean crack filling materials, the water pressure is controlled at 2MPa, when the water flowing out of the surrounding crack is clean and the flow is stable, water injection is finished, finally cement slurry with the water-cement ratio of 1:1 is injected, when the slurry flows out of the crack, the drilling equipment is a YT28 type gas leg rock drill, a B25 conical rod and a straight alloy head air drill bit, and grouting equipment is a BW-150 grouting machine, a cement mortar stirrer and a phi 75 hollow grouting anchor rod. The anchoring agent is cement anchoring agent (T219-2002). The grouting material is 425# ordinary Portland cement.
Specifically, in the second construction step, after grouting cement in a grouting hole is solidified, drilling holes with construction spacing of 1m multiplied by 1m and phi 20 with depth of 0.6m are formed by expanding the area of water-gushed surrounding rock by 1m, inserting an expansion anchor rod with length of 0.6m, exposing the anchor rod to the drill hole for 5cm, installing a No. 6 wire netting with thickness of 50mm multiplied by 50mm, spraying C30 fine-grained concrete with thickness of 0.1m, spraying the C30 fine-grained concrete for 3 times, each time with thickness not exceeding 0.05m, spraying the concrete for the next time after the concrete sprayed last time is solidified, wherein the punching equipment is a YT28 type airleg drill, a B25 conical drill rod and a straight alloy head air drill bit, and the C30 fine-grained concrete spraying and protecting equipment is a mining HP-5 concrete spraying machine by adopting a dry spraying and protecting process. The preparation materials of the C30 fine-grain concrete are fine sand, fine broken stone, 425# ordinary Portland cement and water glass, the mixing ratio of the materials is determined by a detection mechanism through experiments, and the preparation equipment is a JZC150 concrete mixer.
Specifically, after the concrete sprayed in the second step is solidified, the construction space is further expanded by 0.6m multiplied by 0.6m and phi 10 holes with the depth of 0.5m are drilled according to the area of the water-gushing surrounding rock, an expansion anchor rod with the length of 0.5m is inserted, the anchor rod is exposed out of a drilling hole opening by 3cm, a composite waterproof cloth with the diameter of 60mm multiplied by 60mm is installed, then a reinforcing steel bar with the diameter of 6mm is used for being rolled into a reinforcing steel bar net according to the area of the surrounding rock in a transverse and vertical arrangement mode, then C30 fine concrete with the thickness of 5cm is sprayed, the C30 fine concrete is sprayed for 3 times, the thickness of each time is not more than 1.5cm, and the next spraying is performed after the concrete sprayed last time is solidified.
Specifically, humus soil, sodium sulfide and barium chloride in the fourth step are prepared by adopting a JZC150 concrete mixer according to the mass ratio of 1000:5:1, and the organic matter content of the humus soil is more than 1.5%.
Specifically, in the fifth step, C20 concrete walls with surrounding rocks embedded around the pits (pulse through holes) are built, gaps between the concrete walls and the surrounding rocks are plugged by injecting 1:1 cement paste, C20 concrete is prepared from sand stone, broken stone and 425# ordinary Portland cement by adopting a JZC150 concrete mixer, and the material mixing ratio is determined by a detection mechanism through experiments. The 1:1 cement paste preparation equipment is a cement paste mixer, the material is 425# Portland cement and clear water, and the mass ratio is 1:1. The grouting equipment adopts a BW-150 grouting machine.
Working principle: firstly, a YT28 type gas leg rock drill, a B25 conical drill rod and a drill bit of a straight-line alloy head pneumatic drill bit phi 89 are used for drilling grouting holes at the position 1m away from water-gushing cracks on one side of surrounding rock water-gushing cracks, the included angle between each grouting hole and each rock crack is 45 degrees, the quantity is determined by the quantity and the length of the water-gushing cracks, the depth is 0.3m through the water-gushing cracks, after the drilling grouting holes are finished, drilling holes are blown clean by high-pressure air and high-pressure water, a phi 75 grouting pipe is installed, the pipe orifice is fixed by an anchoring agent, after the anchoring agent is solidified, clear water is firstly pressed in to clean crack fillers, the water pressure is controlled at 2MPa, water injection is finished after the water flowing out of the surrounding cracks is clean and the flow is stable, finally cement slurry with the water-cement ratio of 1:1 is injected, after grouting cement is solidified in the grouting holes, drilling holes are expanded by 1m according to the area of the water-gushing surrounding rock, phi 20 drilling holes are constructed at the depth of 1m multiplied by 1m, inserting an expansion anchor rod with the length of 0.6m, exposing the hole opening by 5cm, installing a No. 6 wire netting with the length of 50mm multiplied by 50mm, spraying C30 fine concrete with the thickness of 0.1m, spraying C30 fine concrete for 3 times, spraying the concrete with the thickness of not more than 0.05m each time, spraying the concrete again after the last spraying concrete is solidified, spreading the construction spacing of 0.6m multiplied by 0.6m and phi 10 holes with the depth of 0.5m according to the area of water gushing surrounding rock after the sprayed concrete is solidified, inserting an expansion anchor rod with the length of 0.5m, exposing the hole opening by 3cm, installing a composite waterproof cloth with the thickness of 60mm multiplied by 60mm, using steel bars with the diameter of 6mm according to the area of surrounding rock to form a steel bar net in a transverse and vertical arrangement mode, spraying C30 fine concrete with the thickness of 5cm again after the last spraying concrete is solidified for 3 times, spraying the concrete again after the last spraying concrete is solidified again, and (3) filling the interior of the tunnel (through vein) with humus soil, sodium sulfide and barium chloride, and finally constructing C20 concrete walls with surrounding rocks embedded in the periphery of the tunnel mouth (through vein), wherein gaps between the concrete walls and the surrounding rocks are plugged by adopting a 1:1 cement slurry injection mode.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (7)
1. The uranium exceeding tunnel water treatment process is characterized by comprising the following steps of: the process comprises the following steps:
firstly, drilling holes on water-gushing surrounding rocks of tunnels, and then injecting cement paste into the drilled holes to seal water-gushing cracks of the water-gushing surrounding rocks;
secondly, grouting cement in holes of the water-gushing surrounding rock holes, hanging an iron wire net on the surface of the water-gushing surrounding rock after the cement is solidified, and then carrying out concrete spraying protection on the hanging net;
thirdly, after the sprayed concrete at the hanging net is solidified, hanging composite waterproof cloth on the outer wall of the sprayed concrete, tying the outer part of the waterproof cloth into a grid shape by using steel bars, and then spraying the concrete at the hanging waterproof cloth again;
filling the tunnel, namely filling humus soil, sodium sulfide and barium chloride in the tunnel;
and fifthly, closing the pithead, wherein the pithead is closed by a concrete wall embedded with surrounding rock.
2. The uranium exceeding tunnel water treatment process according to claim 1, wherein: in the first step, a drilling bit phi 89 is used for drilling grouting holes at the position 1m away from the water-gushing cracks on one side of the surrounding rock water-gushing cracks, the included angle between the grouting holes and the rock cracks is 45 degrees, the quantity is determined by the quantity and the length of the water-gushing cracks, and the depth is 0.3m through the water-gushing cracks.
3. The uranium exceeding tunnel water treatment process according to claim 1, wherein: and after the drilling and grouting holes are finished, blowing out the drilled holes by using high-pressure air and high-pressure water, installing a phi 75 grouting pipe, fixing the pipe orifice by using an anchoring agent, after the anchoring agent is solidified, pressing clean water into the pipe orifice to clean crack filling materials, controlling the water pressure to be 2MPa, finishing water injection after the peripheral cracks outflow water is clean and the flow is stable, and finally, injecting cement slurry with the cement-cement ratio of 1:1, and finishing grouting when the slurry flows out of the cracks.
4. The uranium exceeding tunnel water treatment process according to claim 1, wherein: in the second construction step, after grouting cement in the grouting holes is solidified, drilling holes with construction spacing of 1m multiplied by 1m and phi 20 with depth of 0.6m are outwards expanded according to the area of water-gushing surrounding rock within the range of 1m, inserting an expansion anchor rod with length of 0.6m, exposing the anchor rod to the drill hole for 5cm, installing a No. 6 wire netting with length of 50mm multiplied by 50mm, spraying C30 fine concrete with thickness of 0.1m, spraying the C30 fine concrete for 3 times, each time with thickness of not more than 0.05m, and spraying the concrete for the next time after the last sprayed concrete is solidified.
5. The uranium exceeding tunnel water treatment process according to claim 1, wherein: after the concrete sprayed in the second step is solidified, the construction space is further expanded by 0.6m multiplied by 0.6m and phi 10 drilling holes with the depth of 0.5m are formed in the range of 0.5m according to the area of the water-gushing surrounding rock, an expansion anchor rod with the length of 0.5m is inserted, the anchor rod is exposed out of a drilling hole opening for 3cm, a composite waterproof cloth with the length of 60mm multiplied by 60mm is installed, then reinforcing steel bars with the diameter of 6mm are used for being bundled into a reinforcing steel bar net according to the area of the surrounding rock in a transverse and vertical arrangement mode, then C30 fine concrete with the thickness of 5cm is sprayed, the C30 fine concrete is sprayed for 3 times, the thickness of each time is not more than 1.5cm, and the next spraying is performed after the concrete sprayed last time is solidified.
6. The uranium exceeding tunnel water treatment process according to claim 1, wherein: and in the fourth step, humus soil, sodium sulfide and barium chloride are prepared by adopting a JZC150 concrete mixer according to the mass ratio of 1000:5:1, wherein the organic matter content of the humus soil is more than 1.5%.
7. The uranium exceeding tunnel water treatment process according to claim 1, wherein: and fifthly, constructing C20 concrete walls with surrounding rocks embedded in the periphery of the pit mouths, and plugging gaps between the concrete walls and the surrounding rocks by adopting a 1:1 cement paste injection mode.
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