CN116254863A - Vertical slotting device for horizontal hole of thick stratum and construction method of lateral water interception curtain - Google Patents
Vertical slotting device for horizontal hole of thick stratum and construction method of lateral water interception curtain Download PDFInfo
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- CN116254863A CN116254863A CN202111507141.9A CN202111507141A CN116254863A CN 116254863 A CN116254863 A CN 116254863A CN 202111507141 A CN202111507141 A CN 202111507141A CN 116254863 A CN116254863 A CN 116254863A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 63
- 238000010276 construction Methods 0.000 title abstract description 14
- 239000011435 rock Substances 0.000 claims abstract description 56
- 238000005553 drilling Methods 0.000 claims abstract description 38
- 239000002002 slurry Substances 0.000 claims abstract description 38
- 238000002347 injection Methods 0.000 claims abstract description 18
- 239000007924 injection Substances 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 9
- 239000000843 powder Substances 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims description 12
- 238000005520 cutting process Methods 0.000 claims description 11
- 239000007921 spray Substances 0.000 claims description 3
- 239000003245 coal Substances 0.000 description 7
- 238000009792 diffusion process Methods 0.000 description 4
- 238000005065 mining Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- IYRDVAUFQZOLSB-UHFFFAOYSA-N copper iron Chemical compound [Fe].[Cu] IYRDVAUFQZOLSB-UHFFFAOYSA-N 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- JQJCSZOEVBFDKO-UHFFFAOYSA-N lead zinc Chemical compound [Zn].[Pb] JQJCSZOEVBFDKO-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
- E02D19/16—Restraining of underground water by damming or interrupting the passage of underground water by placing or applying sealing substances
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/103—Dams, e.g. for ventilation
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Abstract
The invention discloses a vertical slotting device for a horizontal hole of a thick rock stratum and a method for constructing a lateral water-intercepting curtain, which comprises a drill rod, wherein a pulse system, a jet flow structure and a slotting structure are sequentially arranged on the drill rod; the slotting structure comprises a cutter disc, a driving shaft, a driving wheel and jet flow rollers, wherein the driving wheel and the cutter disc are positioned on the same plane, a chain is arranged at the periphery of the driving wheel and the cutter disc, and saw teeth are arranged on the chain; the dynamic slotting of the bottom of a thick rock stratum drilling hole is realized through a pulse system, a jet flow structure and a slotting structure, the jet injection system realizes jet grouting, and a fully-closed or semi-closed thick rock stratum lateral water-intercepting curtain is constructed; simultaneously, the hole bottom power slotting and the injection grouting are simultaneously carried out, so that the working procedures and the operation time are saved; in addition, the slurry is mixed with the cut and broken rock blocks and rock powder to form a continuous lateral water-intercepting curtain by the cementing body, so that the construction cost of the water-intercepting curtain is reduced, and the technical problems of low water-intercepting rate and high construction cost of the water-intercepting curtain of the rock stratum in the prior art are solved.
Description
Technical Field
The invention belongs to the field of water-intercepting curtains for coal mines and non-coal mines, relates to a horizontal hole vertical slotting device, and in particular relates to a thick stratum horizontal hole vertical slotting device and a lateral water-intercepting curtain construction method.
Background
The underground deposit of many mining areas has complex hydrogeological conditions and large water inflow, the aim of depressurization and drainage safe exploitation is difficult to achieve by a drainage method, and the water-rich rock stratum is a main water source for medium and deep coal and non-coal mine exploitation, so that the mine drainage displacement is huge, water resource waste and ecological environment destruction are caused. Particularly, the distribution area of the Luohe sandstone in the western mining area is wide, the thickness is large, the underground water is rich, the water quality is good, the Luohe sandstone water enters a mine through a mining fracture in the coal mining process, the water quality is polluted, the mine drainage is increased, and the safety production of the mine is affected. The water interception curtain can block the supply channel of the water-rich rock stratum to the mine, isolate the mine space from the bedrock aquifer, reduce the lateral supply amount of underground water, reduce the drainage amount of the mine, ensure the water level of the water-rich rock stratum outside the curtain, reduce the drainage cost of the mine and the water resource tax, realize the zero emission of the water of the boosted mine, and realize the protection of the water resource and the ecological environment of the mine. Meanwhile, underground water isolation is carried out by adopting a water interception curtain engineering in the engineering of water conservancy and hydropower engineering seepage prevention, traffic tunnel underground water control and the like.
The conventional water-intercepting curtain technology mainly comprises a drilling grouting curtain, an underground continuous wall, a jet grouting pile row, a clay core wall and the like, and the conventional water-intercepting curtain technology is usually used for shallow aquifers, and the drilling grouting curtain has successfully completed a plurality of mine water-controlling projects, such as: the metallurgical mine comprises iron ores such as Shandong Zhang Matun, han Wang, heiwang and the like; lead zinc ore at the water gap of Hunan province and copper iron ore at the red mountain of Hubei province; coal systems include mines such as Xuang, tian Tun, qingshan spring, zhu Xianzhuang, etc.
In the prior art, underground continuous walls, jet grouting pile rows, clay core walls and the like can be implemented in loose layers or shallow rock layers only, and water interception curtains cannot be constructed in deep thick rock layers; the drilling grouting curtain is used for constructing a linear grouting channel in a thick rock stratum through a ground straight drilling hole, a ground directional horizontal hole or a downhole horizontal hole, grouting slurry is injected into the drilling hole through a grouting pump, and then the slurry diffuses along cracks or cavities revealed by the drilling hole to block the rock stratum water channel. The water interception rate of the drilling grouting curtain is low, the slurry diffusion range is wide, the grouting engineering quantity is large, the grouting material consumption is large, the manufacturing cost is high, a continuous curtain wall cannot be formed, the diffusion range in a pore type stratum is very small, and an effective water interception curtain cannot be constructed.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention aims to provide a vertical slotting device for a horizontal hole of a thick stratum and a lateral water interception curtain construction method, which solve the technical problems of low water interception rate and high construction cost of the water interception curtain in the prior art.
In order to solve the technical problems, the invention adopts the following technical scheme:
the vertical slotting device for the horizontal hole of the thick stratum comprises a drill rod, wherein a pulse system, a jet flow structure and a slotting structure are sequentially arranged on the drill rod;
the slotting structure comprises a cutter disc, a driving shaft, a driving wheel and a jet roller, wherein the driving shaft comprises an inner shaft and an outer shaft, the driving wheel and the jet roller are fixedly arranged on the inner shaft, the driving wheel and the cutter disc are positioned on the same plane, chains are arranged on the peripheries of the driving wheel and the cutter disc, and saw teeth are arranged on the chains; the lower side of the cutter head is fixedly provided with a connecting disc which is rotatably arranged on the outer shaft;
the cutter head is also provided with an injection system, and the injection system comprises a high-pressure injection pipe arranged in the cutter head and a high-pressure nozzle which is connected with the high-pressure injection pipe and extends out of the top of the cutter head.
The invention also comprises the following technical characteristics:
the rotation range of the connecting disc on the outer shaft is 0-90 degrees.
The jet structure comprises a shell, a high-pressure cavity is formed in the shell, a connecting cylinder connected with the pulse system is arranged in the high-pressure cavity, and a jet gun is arranged on the connecting cylinder.
The inner wall of the shell is fixedly provided with a bearing, and the bearing is rotatably provided with an inner shaft.
The chain is provided with saw teeth at equal intervals.
The connecting disc is arranged on the cutter head through a screw.
A construction method of a lateral water interception curtain of a thick stratum horizontal hole vertical slotting device comprises the following steps:
step one, determining the position of a lateral water interception curtain according to the hydrogeological conditions of a mine and the characteristics of thick rock stratum, and designing a totally-enclosed, semi-enclosed, bottom-falling or hanging water interception curtain according to the investment budget and water interception rate requirements;
installing a drilling machine on the ground, constructing a directional horizontal drilling hole, firstly constructing a vertical drilling hole to penetrate through a loose layer and a water-proof stratum, then deflecting, constructing a deflecting drilling hole to penetrate through the water-proof stratum and the top of a water-rich thick stratum, and constructing the horizontal drilling hole in the water-rich thick stratum to reach the design length when the drilling hole is near the horizontal drilling hole;
lifting the drill rod, and lowering the installed vertical slotting device for the horizontal hole of the thick rock stratum to the constructed horizontal drilling terminal;
step four, preparing water-intercepting curtain grouting slurry on the ground, and injecting the slurry into a drill rod by using a grouting pump, wherein the slurry enters a pulse system through a vertical section drill rod, a deflecting section drill rod and a horizontal section drill rod;
step five, when the slurry flows through the inside of the pulse system, the pulse system pressurizes the liquid conveyed by the drill rod to form positive liquid pressure pulse, and the positive liquid pressure pulse enters the jet system;
step six, the slurry is sprayed out into the rear end of the connecting cylinder through a pulse system under high pressure and is sprayed out into the jet gun from the front end of the connecting cylinder, the jet gun sprays out the slurry under the action of huge pressure to drive the jet roller to rotate, the jet roller drives the driving shaft and the driving wheel to rotate, the driving wheel chain rotates around the cutterhead and the outer edge of the driving wheel under the driving of the driving wheel, saw teeth embedded on the chain rapidly rotate along with the chain and cut rock strata to form a cutting seam, and the slurry sprayed out by the jet gun is accumulated in the high-pressure bin;
step seven, continuously pressurizing the slurry accumulated in a high-pressure bin of the jet system, ejecting the slurry from a high-pressure nozzle through a high-pressure ejecting pipe, ejecting high-pressure liquid to cut the rock mass in front to form a jet grouting area, and mixing the slurry, the cut broken rock mass and rock powder into a cementing body in the kerf and jet grouting area to form a continuous lateral water-intercepting curtain;
step eight, continuously extracting a drill rod from inside to outside, repeating the steps four to seven, and continuously cutting the rock mass and injecting grouting at a set position to form a vertical continuous lateral curtain wall;
step nine, repeating the step two to the step eight below the constructed lateral water interception curtain with the horizontal hole vertically slit to form a water interception curtain continuous with the upper lateral water interception curtain;
and step ten, repeating the step two to the step nine, and constructing a totally-enclosed or semi-enclosed thick stratum lateral water-intercepting curtain.
Compared with the prior art, the invention has the beneficial technical effects that:
according to the invention, through a pulse system, a jet flow structure and a slotting structure, the dynamic slotting of the bottom of a thick rock stratum drilling hole is realized, the jet injection system realizes jet grouting, a fully-closed or semi-closed thick rock stratum lateral water-intercepting curtain is constructed, and the water-intercepting rate of the rock stratum curtain is improved; simultaneously, the hole bottom power slotting and the injection grouting are simultaneously carried out, so that the working procedures and the operation time are saved; in addition, the slurry is mixed with the cut and broken rock blocks and rock powder to form a continuous lateral water-intercepting curtain by the cementing body, so that the construction cost of the water-intercepting curtain is reduced, and the technical problems of low water-intercepting rate and high construction cost of the water-intercepting curtain of the rock stratum in the prior art are solved.
And (II) the vertical cutting seam is constructed in the thick stratum, a guide groove is provided for injecting grouting, the range of injecting grouting is extended, the vertical height of the lateral water interception curtain is enlarged, the problems of large construction difficulty of the thick stratum curtain and uncontrollable slurry diffusion range are solved, the directional connection of the thick stratum curtain in the vertical direction is realized, and the seepage resistance of the stratum curtain is improved.
And (III) continuously cutting the rock mass and injecting grouting at the set position to construct the mixed cementing body to form a vertical continuous lateral curtain wall, thereby realizing the continuity between the lateral water-intercepting curtains, forming an organic integral water-intercepting curtain and improving the continuity and the seepage-proofing performance of the water-intercepting curtain.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic front view of the slit structure of the present invention;
FIG. 3 is a schematic side view of a slit structure of the present invention;
FIG. 4 is a schematic view of a horizontal section of a slit structure according to the present invention;
FIG. 5 is a schematic diagram of the operation of a thick strata horizontal vertical slotting device;
FIG. 6 is a schematic cross-sectional view of a thick formation lateral water cut curtain;
FIG. 7 is a schematic plan view of a lateral water-cutting curtain of a thick rock formation.
The meaning of each reference numeral in the figures is: 1-drill rod, 2-pulse system, 3-jet structure, 4-slot structure, 5-jet system, 6-screw, 7-drilling hole, 8-stratum;
301-housing, 302-high pressure chamber, 303-connecting barrel, 304-jet gun,
401-cutterhead, 402-driving shaft, 403-driving wheel, 404-jet roller, 405-chain, 406-connecting disc, 407-saw tooth;
40201-an inner shaft, 40202-an outer shaft;
501-high pressure jet pipe, 502-high pressure nozzle;
701-vertical section drilling, 702-deflecting section drilling, 703-horizontal section drilling;
801-loose layer, 802-water-proof stratum, 803-thick stratum water, 804-roof water-proof stratum, 805-coal bed, 806-floor stratum, 807-water-rich thick stratum, 808-lateral water-intercepting curtain, 809-collapse zone and water-guiding crack zone.
The following examples illustrate the invention in further detail.
Detailed Description
All parts in the present invention are known in the art, unless otherwise specified.
The following specific embodiments of the present invention are provided, and it should be noted that the present invention is not limited to the following specific embodiments, and all equivalent changes made on the basis of the technical solutions of the present application fall within the protection scope of the present invention.
The invention provides a vertical slotting device for a horizontal hole of a thick rock stratum, which is shown in figures 1 to 4, and comprises a drill rod 1, wherein a pulse system 2, a jet flow structure 3 and a slotting structure 4 are sequentially arranged on the drill rod 1;
the slotting structure 4 comprises a cutter disc 401, a driving shaft 402, a driving wheel 403 and a jet roller 404, wherein the driving shaft 402 comprises an inner shaft 40201 and an outer shaft 40202, the driving wheel 403 and the jet roller 404 are fixedly arranged on the inner shaft 40201, the driving wheel 403 and the cutter disc 401 are positioned on the same plane, a chain 405 is arranged at the periphery of the driving wheel 403 and the cutter disc 401, and saw teeth 407 are arranged on the chain 405; a connecting disc 406 is fixedly arranged on the lower side of the cutter head 401, and the connecting disc 406 is rotatably arranged on an outer shaft 40202;
the cutterhead 402 is further provided with an injection system 5, and the injection system 5 comprises a high-pressure injection pipe 501 arranged inside the cutterhead 401 and a high-pressure nozzle 502 connected with the high-pressure injection pipe 501 and extending out of the top of the cutterhead 401.
In the technical scheme, through the pulse system, the jet flow structure and the slotting structure, the dynamic slotting of the bottom of a thick rock stratum drilling hole is realized, the jet injection system realizes jet grouting, a fully-closed or semi-closed thick rock stratum lateral water interception curtain is constructed, and the water interception rate of the rock stratum curtain is improved; simultaneously, the hole bottom power slotting and the injection grouting are simultaneously carried out, so that the working procedures and the operation time are saved; in addition, the slurry is mixed with the cut and broken rock blocks and rock powder to form a continuous lateral water-intercepting curtain by the cementing body, so that the construction cost of the water-intercepting curtain is reduced, and the technical problems of low water-intercepting rate and high construction cost of the water-intercepting curtain of the rock stratum in the prior art are solved.
Specifically, the rotational range of the interface disc 406 on the outer shaft 40202 is 0 ° to 90 °.
In the initial lowering process, the slotting structure 4 and the drill rod 1 are positioned at the same level and at the position of 0 degrees, and when the slotting structure is lowered to the slotting position, the slotting structure 4 is gradually lifted and rotated to the vertical position, namely the position of 90 degrees, from the horizontal position under the driving of the jet structure 3.
Specifically, the jet structure 3 includes a housing 301, a high-pressure chamber 302 is disposed inside the housing, a connecting cylinder 303 connected to the pulse system 2 is disposed in the high-pressure chamber 302, and a jet gun 304 is disposed on the connecting cylinder 303.
Specifically, a bearing is fixedly mounted on the inner wall of the housing 301, and an inner shaft 40201 is rotatably mounted on the bearing.
Specifically, the saw teeth 407 are arranged on the chain 405 at equal intervals, so that the cutting stability is ensured.
Specifically, the connecting disc 406 is mounted on the cutterhead 401 through the screw 6, so that the disassembly and the installation are convenient.
The method for constructing the lateral water interception curtain of the thick stratum horizontal hole vertical slotting device comprises the following steps of:
step one, determining the position of a lateral water interception curtain according to the hydrogeological conditions of a mine and the characteristics of thick rock stratum, and designing a totally-enclosed, semi-enclosed, bottom-falling or hanging water interception curtain according to the investment budget and water interception rate requirements;
installing a drilling machine on the ground, constructing a directional horizontal drilling hole, firstly constructing a vertical drilling hole to penetrate through a loose layer and a water-proof stratum, then deflecting, constructing a deflecting drilling hole to penetrate through the water-proof stratum and the top of a water-rich thick stratum, and constructing the horizontal drilling hole in the water-rich thick stratum to reach the design length when the drilling hole is near the horizontal drilling hole;
lifting the drill rod, and lowering the installed vertical slotting device for the horizontal hole of the thick rock stratum to the constructed horizontal drilling terminal;
step four, preparing water-intercepting curtain grouting slurry on the ground, and injecting the slurry into a drill rod by using a grouting pump, wherein the slurry enters a pulse system through a vertical section drill rod, a deflecting section drill rod and a horizontal section drill rod;
step five, when the slurry flows through the inside of the pulse system, the pulse system pressurizes the liquid conveyed by the drill rod to form positive liquid pressure pulse, and the positive liquid pressure pulse enters the jet system;
step six, the slurry is sprayed out into the rear end of the connecting cylinder through a pulse system under high pressure and is sprayed out into the jet gun from the front end of the connecting cylinder, the jet gun sprays out the slurry under the action of huge pressure to drive the jet roller to rotate, the jet roller drives the driving shaft and the driving wheel to rotate, the driving wheel chain rotates around the cutterhead and the outer edge of the driving wheel under the driving of the driving wheel, saw teeth embedded on the chain rapidly rotate along with the chain and cut rock strata to form a cutting seam, and the slurry sprayed out by the jet gun is accumulated in the high-pressure bin;
step seven, continuously pressurizing the slurry accumulated in a high-pressure bin of the jet system, ejecting the slurry from a high-pressure nozzle through a high-pressure ejecting pipe, ejecting high-pressure liquid to cut the rock mass in front to form a jet grouting area, and mixing the slurry, the cut broken rock mass and rock powder into a cementing body in the kerf and jet grouting area to form a continuous lateral water-intercepting curtain;
step eight, continuously extracting a drill rod from inside to outside, repeating the steps four to seven, and continuously cutting the rock mass and injecting grouting at a set position to form a vertical continuous lateral curtain wall;
step nine, repeating the step two to the step eight below the constructed lateral water interception curtain with the horizontal hole vertically slit to form a water interception curtain continuous with the upper lateral water interception curtain;
and step ten, repeating the step two to the step nine, and constructing a totally-enclosed or semi-enclosed thick stratum lateral water-intercepting curtain.
In the technical scheme, the vertical cutting seam is constructed in the thick rock stratum, the guide groove is provided for injecting grouting, the range of injecting grouting is extended, the vertical height of the lateral water interception curtain is enlarged, the problems of large construction difficulty of the thick rock stratum curtain and uncontrollable slurry diffusion range are solved, the directional connection of the thick rock stratum curtain in the vertical direction is realized, and the seepage resistance of the rock stratum curtain is improved; in addition, the rock mass is continuously cut and the grouting is continuously sprayed at the set position, the mixed cementing body is constructed, a vertical continuous lateral curtain wall is formed, continuity between lateral water-intercepting curtains is achieved, an organic integral water-intercepting curtain is formed, and continuity and seepage-proofing performance of the water-intercepting curtain are improved.
Claims (7)
1. The vertical slotting device for the horizontal hole of the thick stratum comprises a drill rod (1), and is characterized in that a pulse system (2), a jet flow structure (3) and a slotting structure (4) are sequentially arranged on the drill rod (1);
the slotting structure (4) comprises a cutter disc (401), a driving shaft (402), a driving wheel (403) and a jet roller (404), wherein the driving shaft (402) comprises an inner shaft (40201) and an outer shaft (40202), the driving wheel (403) and the jet roller (404) are fixedly arranged on the inner shaft (40201), the driving wheel (403) and the cutter disc (401) are located on the same plane, a chain (405) is arranged at the periphery of the driving wheel (403) and the cutter disc (401), and saw teeth (407) are arranged on the chain (405); a connecting disc (406) is fixedly arranged on the lower side of the cutter head (401), and the connecting disc (406) is rotatably arranged on an outer shaft (40202);
the cutter head (402) is also provided with an injection system (5), and the injection system (5) comprises a high-pressure injection pipe (501) arranged in the cutter head (401) and a high-pressure nozzle (502) connected with the high-pressure injection pipe (501) and extending out of the top of the cutter head (401).
2. The thick strata horizontal hole vertical slotting device of claim 1 wherein the rotation range of the connection disc (406) on the outer shaft (40202) is 0 ° to 90 °.
3. The vertical slotting device for the horizontal holes of the thick rock stratum according to claim 1, wherein the jet structure (3) comprises a shell (301), a high-pressure cavity (302) is arranged in the shell, a connecting cylinder (303) connected with the pulse system (2) is arranged in the high-pressure cavity (302), and a jet gun (304) is arranged on the connecting cylinder (303).
4. A thick strata horizontal hole vertical slotting device as claimed in claim 3 wherein a bearing is fixedly mounted on the inner wall of the housing (301) and an inner shaft (40201) is rotatably mounted on the bearing.
5. The device for vertical slotting of horizontal holes in thick strata according to claim 1 wherein the chains (405) are equally spaced apart with serrations (407).
6. The vertical slotting device for the horizontal hole of the thick rock stratum according to claim 1, wherein the connecting disc (406) is arranged on the cutter head (401) through a screw (6).
7. A method of constructing a lateral water screen of a thick strata horizontal hole vertical slot device as claimed in any one of claims 1 to 6 comprising the steps of:
step one, determining the position of a lateral water interception curtain according to the hydrogeological conditions of a mine and the characteristics of thick rock stratum, and designing a totally-enclosed, semi-enclosed, bottom-falling or hanging water interception curtain according to the investment budget and water interception rate requirements;
installing a drilling machine on the ground, constructing a directional horizontal drilling hole, firstly constructing a vertical drilling hole to penetrate through a loose layer and a water-proof stratum, then deflecting, constructing a deflecting drilling hole to penetrate through the water-proof stratum and the top of a water-rich thick stratum, and constructing the horizontal drilling hole in the water-rich thick stratum to reach the design length when the drilling hole is near the horizontal drilling hole;
lifting the drill rod, and lowering the installed vertical slotting device for the horizontal hole of the thick rock stratum to the constructed horizontal drilling terminal;
step four, preparing water-intercepting curtain grouting slurry on the ground, and injecting the slurry into a drill rod by using a grouting pump, wherein the slurry enters a pulse system through a vertical section drill rod, a deflecting section drill rod and a horizontal section drill rod;
step five, when the slurry flows through the inside of the pulse system, the pulse system pressurizes the liquid conveyed by the drill rod to form positive liquid pressure pulse, and the positive liquid pressure pulse enters the jet system;
step six, the slurry is sprayed out into the rear end of the connecting cylinder through a pulse system under high pressure and is sprayed out into the jet gun from the front end of the connecting cylinder, the jet gun sprays out the slurry under the action of huge pressure to drive the jet roller to rotate, the jet roller drives the driving shaft and the driving wheel to rotate, the driving wheel chain rotates around the cutterhead and the outer edge of the driving wheel under the driving of the driving wheel, saw teeth embedded on the chain rapidly rotate along with the chain and cut rock strata to form a cutting seam, and the slurry sprayed out by the jet gun is accumulated in the high-pressure bin;
step seven, continuously pressurizing the slurry accumulated in a high-pressure bin of the jet system, ejecting the slurry from a high-pressure nozzle through a high-pressure ejecting pipe, ejecting high-pressure liquid to cut the rock mass in front to form a jet grouting area, and mixing the slurry, the cut broken rock mass and rock powder into a cementing body in the kerf and jet grouting area to form a continuous lateral water-intercepting curtain;
step eight, continuously extracting a drill rod from inside to outside, repeating the steps four to seven, and continuously cutting the rock mass and injecting grouting at a set position to form a vertical continuous lateral curtain wall;
step nine, repeating the step two to the step eight below the constructed lateral water interception curtain with the horizontal hole vertically slit to form a water interception curtain continuous with the upper lateral water interception curtain;
and step ten, repeating the step two to the step nine, and constructing a totally-enclosed or semi-enclosed thick stratum lateral water-intercepting curtain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111507141.9A CN116254863B (en) | 2021-12-10 | Vertical slotting device for horizontal hole of thick stratum and construction method of lateral water interception curtain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111507141.9A CN116254863B (en) | 2021-12-10 | Vertical slotting device for horizontal hole of thick stratum and construction method of lateral water interception curtain |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116254863A true CN116254863A (en) | 2023-06-13 |
| CN116254863B CN116254863B (en) | 2024-06-28 |
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| JPH09228378A (en) * | 1996-02-22 | 1997-09-02 | Hazama Gumi Ltd | Construction method for cut-off wall, and excavating device used in this construction method |
| JP2008095276A (en) * | 2006-10-05 | 2008-04-24 | Shimizu Corp | Excavator |
| CN110130381A (en) * | 2019-05-08 | 2019-08-16 | 王权民 | A kind of water-stop curtain building equipment |
| CN110617044A (en) * | 2019-07-23 | 2019-12-27 | 重庆大学 | Ultrahigh-pressure water jet slotting system and using method thereof |
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