Deep shaft high-pressure large gushing water treatment device and mounting method thereof

Abstract

The invention discloses a deep shaft high-pressure large gushing water treatment device and an installation method thereof, and particularly relates to the technical field of mine construction, the deep shaft high-pressure large gushing water treatment device comprises a shaft body, the shaft body is provided with a shaft inner wall, the bottom of the shaft inner wall is provided with a working face slag crushing layer, and the outer side of the shaft body is provided with shaft surrounding rock; the inverted dome splicing structure is located on the working face slag crushing layer, the curvature of the outer edge of the inverted dome splicing structure is matched with the inner wall of the vertical shaft, and a water stop strip is embedded in the outer edge of the inverted dome splicing structure. The inverted dome splicing structure is a reusable assembly, use of a traditional disposable grout stopping pad is reduced, the construction cost is reduced, meanwhile, secondary damage to shaft surrounding rock caused by blasting demolition of the traditional grout stopping pad is avoided, the integrity of the shaft surrounding rock is protected, the inverted dome splicing structure is convenient to quickly mount and dismount, and the construction efficiency is improved. And the construction time is greatly shortened.

Description

Technical Field

[0001] The present invention relates to the technical field of mine construction, and particularly relates to a device for controlling high-pressure large water inrush in deep vertical shafts and an installation method thereof. Background Technique

[0002] Vertical shafts are commonly used shaft and drift engineering in industries such as mines, water conservancy, and transportation, and are key channels for ventilation, hoisting and transportation, etc. When constructing vertical shafts, especially deep vertical shafts, grouting construction technology needs to be adopted when encountering high-pressure large water inrush strata in the deep part. The construction technology of shaft grouting mainly includes three categories: ground pre-grouting, working face pre-grouting, and behind-the-wall grouting. Working face pre-grouting is carried out when the vertical shaft is driven to a certain distance from the aquifer or the aquifer is exposed. Protective measures need to be taken when there is high-pressure water. During the working face pre-grouting process, in order to ensure that the slurry can effectively diffuse along the fissures under pressure and prevent slurry leakage from the working face, the methods of leaving a slurry-stop rock cap or pouring a concrete slurry-stop pad at the working face are often adopted. When there is a dense impermeable layer above the aquifer, after the shaft is driven to a certain distance above the grouting section, construction should be stopped to leave a slurry-stop rock cap for grouting the aquifer. If a slurry-stop rock cap cannot be left at the shaft working face, an artificial slurry-stop pad needs to be built, and its structural forms include single-stage spherical, flat-bottomed, and double-stage underwater casting forms. When building a slurry-stop pad on a working face with broken rocks, developed fissures or water inrush, a crushed stone water filtration layer needs to be laid to ensure the construction quality of the pad under drainage conditions.

[0003] Leaving a slurry-stop rock cap at the vertical shaft working face requires the formation to be relatively dense and have good water isolation properties, and has high requirements for the geological conditions of the vertical shaft. Building a concrete slurry-stop pad at the deep vertical shaft working face is affected by factors such as the high-pressure large water environment at the working face and the complex process of casting large-volume concrete, and has problems such as long construction period, high labor intensity of personnel, and difficult guarantee of construction quality. In addition, when grouting and controlling a thick large aquifer penetrated by a deep vertical shaft, working face pre-grouting often needs to be carried out in sections, so a concrete slurry-stop pad needs to be built in sections and multiple times. The slurry-stop pad is for one-time use and needs to be blasted when the vertical shaft continues to be driven downwards, which is likely to cause secondary damage to the shaft surrounding rock. Summary of the Invention

[0004] The purpose of the present invention is to provide a device for controlling high-pressure large water inrush in deep vertical shafts and an installation method thereof to solve the problems mentioned in the above background technique.

[0005] In order to achieve the above purpose, the present invention provides the following technical solution: A device for controlling high-pressure large water inrush in deep vertical shafts, comprising:

[0006] A vertical shaft body, the vertical shaft body is provided with a vertical shaft inner wall, the bottom of the vertical shaft inner wall is provided with a working face crushed rock layer, the lower part of the vertical shaft inner wall is provided with embedded grouting pipelines, and the outside of the vertical shaft body is provided with a vertical shaft surrounding rock;

[0007] Inverted dome splicing structure, the inverted dome splicing structure is a spherical split steel structure, the inverted dome splicing structure is located on the crushed slag layer of the working face, the outer edge curvature of the inverted dome splicing structure matches the inner wall of the shaft, and a water stop strip is inlaid on the outer edge of the inverted dome splicing structure;

[0008] Advance grouting pipe for the shaft working face, the advance grouting pipe for the shaft working face vertically penetrates the inverted dome splicing structure;

[0009] Hoisting system, the hoisting system includes hoisting points embedded in the inner wall of the shaft and a lifting hanging tray arranged in the shaft body.

[0010] Furthermore, the inverted dome splicing structure includes a dome center piece, multiple dome strip-shaped pieces and adjusting hydraulic cylinders. Spline bolt holes for splicing are arranged between adjacent dome strip-shaped pieces. The inverted dome splicing structure is assembled on the crushed slag layer of the working face by means of flange bolt connection. The inverted dome splicing structure adopts a split design, which is convenient for installation and disassembly, improves the construction efficiency. Through the adjusting hydraulic cylinders, the outer diameter of the structure can be adjusted according to the actual curvature of the inner wall of the shaft, so that the water stop strip is in close contact with the inner wall of the shaft, enhancing the adaptability and flexibility of the device;

[0011] A hollow box-shaped cavity is formed inside the inverted dome splicing structure, which reduces the self-weight of the structure and provides space for subsequent operations such as grouting at the same time;

[0012] The dome strip-shaped pieces are welded and formed by Q355B low-alloy steel plates, which have high strength and good welding performance, and can ensure the bearing capacity and durability of the structure.

[0013] Furthermore, the embedded grouting pipeline is an annular grouting channel evenly distributed along the circumferential direction of the shaft body, which can realize all-round grouting and ensure uniform grouting effect;

[0014] A check valve is arranged on the pipe body of the embedded grouting pipeline and extends to the outer edge of the inverted dome splicing structure, which can prevent the backflow of the slurry and ensure the smooth progress of the grouting process;

[0015] The embedded grouting pipeline includes a main grouting pipe and branch grouting pipes. The diameter of the main grouting pipe is 50mm, and the branch grouting pipes are arranged radially at a spacing of 500mm. This design can realize efficient grouting operations and ensure that the slurry can fully diffuse into the surrounding rock.

[0016] Furthermore, embedded internal thread sleeves connected to the inverted dome splicing structure are provided inside the inner wall of the shaft, which enhances the integrity and stability of the structure. Concrete is provided at the adjacent part of the inner wall of the shaft and the inverted dome splicing structure, and the concrete is cast on site, further enhancing the sealing and stability of the structure and ensuring the long-term reliability of the treatment effect.

[0017] Furthermore, a flange is provided at the nozzle of the advanced grouting pipe on the shaft working face and is fixed to the inverted dome splicing structure by welding. This connection method is firm and reliable, which can ensure the stability of the grouting pipe and prevent loosening or displacement during the grouting process.

[0018] Furthermore, the water stop strip adopts a three-layer composite structure. The outer layer of the water stop strip is a 2-mm-thick polytetrafluoroethylene wear-resistant layer, the middle layer is an 8-mm water-swelling rubber, and the inner layer is a 1.5-mm stainless steel corrugated lining plate. The thick polytetrafluoroethylene wear-resistant layer on the outer layer can effectively resist the wear of high-pressure water and the crushed slag layer on the working face on the water stop strip, extending the service life of the water stop strip. The water-swelling rubber in the middle layer will rapidly expand after contacting water, ensuring that the tiny gaps between the water stop strip and the inner wall of the shaft are completely filled, forming a tight sealing layer and effectively preventing the leakage of high-pressure water. The stainless steel corrugated lining plate on the inner layer provides structural support for the entire water stop strip, enhancing the overall strength and stability of the water stop strip.

[0019] Furthermore, one or two groups of hoisting points are arranged along the well depth direction of the shaft body, and each group includes 4 to 8 anchoring points distributed in a circular pattern. This arrangement method can ensure the stability and reliability of the hoisting system, facilitating the installation and recovery of the inverted dome splicing structure.

[0020] Furthermore, the relationship between the radius of curvature R of the inverted dome splicing structure and the diameter D of the shaft body satisfies: R=(0.5 - 0.7)D. This design can ensure the tight fit between the inverted dome splicing structure and the inner wall of the shaft, enhancing the sealing performance;

[0021] The gap between the inverted dome splicing structure and the inner wall of the shaft is ≤5 mm, further optimizing the structural design, ensuring the sealing and stability of the device, and preventing the leakage of high-pressure water from the gap.

[0022] The present invention also provides an installation method for a deep shaft high-pressure large water inrush control device. The installation method includes the following steps:

[0023] S1 Working face treatment: Clean the shaft working face to the design elevation, retain a working face crushed slag layer with a thickness of more than 300 - 500 mm as a leveling layer, use a laser rangefinder to scan the inner wall contour of the shaft, and record the actual curvature data of the inner wall of the shaft;

[0024] S2 Structure assembly: Install the inverted dome splicing structure piece by piece through the hoisting system;

[0025] With the assistance of the lifting hanging platform, assemble the dome block components in a clockwise direction in sequence, and connect adjacent components with M24 high-strength bolts;

[0026] Start the hydraulic cylinder for adjustment, adjust the outer diameter of the structure according to the pre-scanned data, and make the contact pressure between the water stop strip and the well wall reach 0.3 - 0.5 MPa;

[0027] Install the dome center piece with a positioning error ≤ 3 mm;

[0028] S3 Sealing grouting: Inject nano-level cement-based slurry through the pre-buried grouting pipeline, and gradually increase the grouting pressure to 4 - 5 MPa;

[0029] Synchronously inject the polyurethane quick-setting material from the advanced grouting pipe at the shaft working face, and control the grouting rate at 30 L / min;

[0030] Stop grouting when the backflow volume < 5%, and maintain pressure for curing for 24 hours;

[0031] S4 Structure recovery: After the strength of the grouting body reaches the design value, release the pressure of the hydraulic cylinder for adjustment;

[0032] Remove the connecting bolts, and hoist the split dome splicing structure in blocks to the next construction section.

[0033] In the above technical solution, the technical effects and advantages provided by the present invention:

[0034] 1. The split dome splicing structure adopts a split design and is connected by flange bolts, which is convenient for quick installation and disassembly, greatly shortening the construction time. The design of the hoisting system makes the installation and recovery of the split dome splicing structure more convenient, reducing the labor intensity of manual operation;

[0035] 2. Through the hydraulic cylinder for adjustment, the outer diameter of the structure can be adjusted according to the actual curvature of the inner wall of the shaft, so that the water stop strip is in close contact with the inner wall of the shaft, enhancing the adaptability of the device and reducing the construction difficulty caused by geological condition changes;

[0036] 3. The outer edge of the split dome splicing structure is inlaid with a water stop strip. The water stop strip adopts a three-layer composite structure, which can expand when encountering water, enhancing the sealing effect and effectively preventing high-pressure water leakage. At the same time, the pre-buried grouting pipelines are evenly distributed along the circumference of the shaft body, including the main grouting pipe and the branch grouting pipes, which can achieve all-round grouting to ensure uniform grouting effect and further enhance the sealing performance;

[0037] 4. The split dome splicing structure is a reusable component, reducing the use of traditional disposable grouting pads, lowering the construction cost, and at the same time avoiding the secondary damage to the shaft surrounding rock caused by the blasting demolition of the traditional grouting pad, protecting the integrity of the shaft surrounding rock. Brief Description of the Drawings

[0038] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings in the following description are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0039] Figure 1 It is a schematic structural diagram before the treatment of high-pressure large water inrush in a deep shaft;

[0040] Figure 2 It is a schematic structural diagram of the device for treating high-pressure large water inrush in a deep shaft provided by the present invention;

[0041] Figure 3 This is along the Figure 2 A-A sectional view schematic diagram of the present invention;

[0042] Figure 4 This is the Figure 2 Enlarged schematic diagram at B in the present invention;

[0043] Figure 5 This is along the Figure 3 C-C sectional view schematic diagram of the present invention.

[0044] Explanation of reference numerals:

[0045] 1. Shaft body; 101. Inner wall of the shaft; 2. Surrounding rock of the shaft; 3. Working face crushed slag layer; 4. Inverted dome splicing structure; 401. Dome center piece; 402. Multiple dome strip-shaped pieces; 403. Adjusting hydraulic cylinder; 5. Advance grouting pipe for the shaft working face; 6. Embedded internal thread sleeve; 7. Embedded grouting pipeline; 8. Waterstop strip; 9. Hoisting point; 10. Lifting hanging tray. Detailed implementation manners

[0046] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the following will further introduce the present invention in detail with reference to the drawings.

[0047] Referring to Figures 2 to 5 , the present invention provides a device for treating high-pressure large water inrush in a deep shaft, including:

[0048] Shaft body 1, the shaft body 1 is provided with an inner wall 101 of the shaft, the bottom of the inner wall 101 of the shaft is provided with a working face crushed slag layer 3, the lower part of the inner wall 101 of the shaft is provided with an embedded grouting pipeline 7, and the outside of the shaft body 1 is provided with surrounding rock 2 of the shaft;

[0049] Inverted dome splicing structure 4, the inverted dome splicing structure 4 is a spherical split steel structure, the inverted dome splicing structure 4 is located on the working face crushed slag layer 3, the outer edge curvature of the inverted dome splicing structure 4 matches the inner wall 101 of the shaft, and a waterstop strip 8 is inlaid on the outer edge of the inverted dome splicing structure 4;

[0050] The advanced grouting pipe 5 at the shaft working face vertically penetrates through the inverted dome splicing structure 4;

[0051] The hoisting system includes hoisting points 9 embedded in the inner wall 101 of the shaft and a lifting hanging tray 10 arranged in the shaft body 1.

[0052] The inverted dome splicing structure 4 includes a dome center piece 401, multiple dome strip-shaped pieces 402 and adjusting hydraulic cylinders 403. Waist-shaped bolt holes for splicing are arranged between adjacent dome strip-shaped pieces 402. The inverted dome splicing structure 4 is assembled on the working face crushed slag layer 3 by means of flange bolt connection. The inverted dome splicing structure 4 adopts a split design, which is convenient for installation and disassembly, improves the construction efficiency. Through the adjusting hydraulic cylinders 403, the outer diameter of the structure can be adjusted according to the actual curvature of the inner wall 101 of the shaft, so that the water stop strip 8 is in close contact with the inner wall 101 of the shaft, enhancing the adaptability and flexibility of the device;

[0053] A hollow box-shaped cavity is formed inside the inverted dome splicing structure 4, which reduces the self-weight of the structure and at the same time provides space for subsequent operations such as grouting;

[0054] The dome strip-shaped pieces 402 are welded and formed by Q355B low-alloy steel plates, which have high strength and good welding performance, and can ensure the bearing capacity and durability of the structure.

[0055] Embedded internal thread sleeves 6 connected to the inverted dome splicing structure 4 are provided inside the inner wall 101 of the shaft, which enhances the integrity and stability of the structure. Concrete is provided at the adjacent parts of the inner wall 101 of the shaft and the inverted dome splicing structure 4. The concrete is cast on-site, further enhancing the sealing and stability of the structure and ensuring the long-term reliability of the treatment effect.

[0056] The relationship between the radius of curvature R of the inverted dome splicing structure 4 and the diameter D of the shaft body 1 satisfies: R = (0.5 - 0.7)D. This design can ensure the close fit of the inverted dome splicing structure 4 and the inner wall 101 of the shaft, enhancing the sealing performance;

[0057] The gap between the inverted dome splicing structure 4 and the inner wall 101 of the shaft ≤ 5 mm, which further optimizes the structural design, ensures the sealing and stability of the device, and prevents high-pressure water from leaking through the gap.

[0058] The embedded grouting pipeline 7 is an annular grouting channel evenly distributed along the circumferential direction of the shaft body 1, which can realize all-round grouting and ensure uniform grouting effect;

[0059] Check valves are arranged on the pipe body of the embedded grouting pipeline 7 and extend to the outer edge of the inverted dome splicing structure 4, which can prevent the backflow of the slurry and ensure the smooth progress of the grouting process;

[0060] The embedded grouting pipeline 7 includes a main grouting pipe and branch grouting pipes. The diameter of the main grouting pipe is 50 mm, and the branch grouting pipes are arranged radially with a spacing of 500 mm. This design can achieve efficient grouting operations and ensure that the grout can fully spread into the surrounding rock.

[0061] The pipe orifice of the advanced grouting pipe 5 at the shaft working face is provided with a flange plate and is fixed to the inverted dome splicing structure 4 by welding. This connection method is firm and reliable, can ensure the stability of the grouting pipe, and prevent loosening or displacement during the grouting process.

[0062] The water stop strip 8 adopts a three-layer composite structure. The outer layer of the water stop strip 8 is a 2-mm-thick polytetrafluoroethylene wear-resistant layer, the middle layer of the water stop strip 8 is an 8-mm water-swellable rubber, and the inner layer of the water stop strip 8 is a 1.5-mm stainless steel corrugated lining plate. The thick polytetrafluoroethylene wear-resistant layer on the outer layer can effectively resist the wear of high-pressure water and the working face debris layer 3 on the water stop strip 8, extend the service life of the water stop strip 8. The water-swellable rubber in the middle layer will rapidly expand after contacting water, ensuring that the tiny gap between the water stop strip 8 and the shaft inner wall 101 is completely filled, forming a tight sealing layer, and effectively preventing the leakage of high-pressure water. The inner stainless steel corrugated lining plate provides structural support for the entire water stop strip 8, enhancing the overall strength and stability of the water stop strip 8.

[0063] One or two groups of lifting points 9 are arranged along the well depth direction of the shaft body 1, and each group includes 4 to 8 anchoring points distributed in a circular pattern. This arrangement method can ensure the stability and reliability of the lifting system, and facilitate the installation and recovery of the inverted dome splicing structure 4.

[0064] To realize the device for treating high-pressure large water inrush in deep shafts, the present invention also provides an installation method for the device for treating high-pressure large water inrush in deep shafts. The installation method includes the following steps:

[0065] S1 Working face treatment: Clean the shaft working face to the design elevation, retain the working face debris layer 3 with a thickness of more than 300 - 500 mm as a leveling layer, use a laser rangefinder to scan the contour of the shaft inner wall 101, and record the actual curvature data of the shaft inner wall 101;

[0066] S2 Structure assembly: Install the inverted dome splicing structure 4 piece by piece through the lifting system;

[0067] With the assistance of the lifting and lowering hanging tray 10, sequentially assemble the dome strip-shaped parts 402 in the clockwise direction, and connect adjacent components with M24 high-strength bolts;

[0068] Start the adjusting hydraulic cylinder 403, adjust the outer diameter of the structure according to the pre-scanned data, and make the contact pressure between the water stop strip 8 and the shaft wall reach 0.3 - 0.5 MPa;

[0069] Install the dome center part 401, and the positioning error ≤ 3 mm;

[0070] S3 Sealing grouting: Inject nano-level cement-based slurry through the pre-buried grouting pipeline 7, and gradually increase the grouting pressure to 4 - 5 MPa in stages;

[0071] Simultaneously inject polyurethane quick-setting material from the advanced grouting pipe 5 at the shaft working face, and control the grouting rate at 30 L / min;

[0072] Stop grouting when the backflow volume < 5%, and maintain pressure for curing for 24 hours;

[0073] S4 Structure recovery: After the strength of the grouted body reaches the design value, release the pressure of the hydraulic cylinder 403 for adjustment;

[0074] Remove the connecting bolts, and hoist and transport the inverted dome splicing structure 4 in blocks to the next construction section.

[0075] In the present invention, the inverted dome splicing structure 4 is a reusable component, which reduces the use of traditional disposable grout pads, reduces the construction cost, and at the same time avoids the secondary damage to the shaft surrounding rock 2 caused by the blasting demolition of the traditional grout pad, protecting the integrity of the shaft surrounding rock 2. The inverted dome splicing structure 4 adopts a split design and is connected by flange bolts, which is convenient for quick installation and disassembly, greatly shortening the construction time. The design of the hoisting system makes the installation and recovery of the inverted dome splicing structure 4 more convenient, reducing the labor intensity of manual operation;

[0076] A water stop strip 8 is inlaid on the outer edge of the inverted dome splicing structure 4. The water stop strip 8 adopts a three-layer composite structure, which can expand when encountering water, enhancing the sealing effect and effectively preventing high-pressure water leakage. Through the hydraulic cylinder 403 for adjustment, the outer diameter of the structure can be adjusted according to the actual curvature of the shaft inner wall 101, so that the water stop strip 8 is in close contact with the shaft inner wall 101, further enhancing the sealing performance and at the same time enhancing the adaptability of the device, reducing the construction difficulty caused by geological condition changes;

[0077] The pre-buried grouting pipelines 7 are evenly distributed along the circumferential direction of the shaft body, including main grouting pipes and branch grouting pipes, which can achieve all-round grouting, ensure uniform grouting effect, and further enhance the sealing performance.

[0078] Only some exemplary embodiments of the present invention have been described by way of illustration. Without doubt, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A device for treating high-pressure large water inrush in deep vertical shafts, characterized in that Comprising: A shaft body (1), the shaft body (1) is provided with a shaft inner wall (101), the bottom of the shaft inner wall (101) is provided with a working face crushed slag layer (3), the lower part of the shaft inner wall (101) is provided with a pre-buried grouting pipeline (7), and the outside of the shaft body (1) is provided with a shaft surrounding rock (2); An inverted dome splicing structure (4), the inverted dome splicing structure (4) is a spherical split steel structure, the inverted dome splicing structure (4) is located on the working face crushed slag layer (3), the outer edge curvature of the inverted dome splicing structure (4) matches the shaft inner wall (101), and a water stop strip (8) is inlaid on the outer edge of the inverted dome splicing structure (4); A shaft working face advanced grouting pipe (5), the shaft working face advanced grouting pipe (5) vertically penetrates the inverted dome splicing structure (4); A hoisting system, the hoisting system includes hoisting points (9) pre-buried in the shaft inner wall (101) and a lifting suspension tray (10) arranged in the shaft body (1).

2. The deep vertical shaft high-pressure large water inrush treatment device according to claim 1, characterized in that: The inverted dome splicing structure (4) includes a dome center piece (401), a plurality of dome strip-shaped pieces (402) and adjusting hydraulic cylinders (403), splicing waist-shaped bolt holes are arranged between adjacent dome strip-shaped pieces (402), the inverted dome splicing structure (4) is assembled on the working face crushed slag layer (3) by a flange bolt connection method, and a hollow box-shaped cavity is formed inside the inverted dome splicing structure (4); The dome strip-shaped piece (402) is formed by welding a Q355B low-alloy steel plate.

3. The high-pressure large water inrush treatment device for deep vertical shafts according to claim 1, wherein: The pre-buried grouting pipeline (7) is an annular grouting channel evenly distributed along the circumferential direction of the shaft body (1), a check valve is arranged on the pipe body of the pre-buried grouting pipeline (7) and extends to the outer edge of the inverted dome splicing structure (4), the pre-buried grouting pipeline (7) includes a main grouting pipe and branch grouting pipes, the diameter of the main grouting pipe is 50 mm, and the branch grouting pipes are arranged radially at an interval of 500 mm.

4. The deep shaft high-pressure large water inrush treatment device according to claim 1, characterized in that: An embedded internal thread sleeve (6) connected to the inverted dome splicing structure (4) is arranged in the shaft inner wall (101), and concrete is arranged at the adjacent part of the shaft inner wall (101) and the inverted dome splicing structure (4), and the concrete is cast on site.

5. The deep shaft high-pressure large water inrush treatment device according to claim 1, characterized in that: A flange plate is arranged at the pipe orifice of the shaft working face advanced grouting pipe (5) and is fixed to the inverted dome splicing structure (4) by welding.

6. The high-pressure large water inrush control device for deep vertical shafts according to claim 1, characterized in that: The water stop strip (8) adopts a three-layer composite structure, the outer layer of the water stop strip (8) is a 2-mm-thick polytetrafluoroethylene wear-resistant layer, the middle layer of the water stop strip (8) is an 8-mm water-swelling rubber, and the inner layer of the water stop strip (8) is a 1.5-mm-thick stainless steel corrugated lining plate.

7. The high-pressure large water inrush treatment device for deep vertical shafts according to claim 1, characterized in that: The hoisting points (9) are arranged in one or two groups along the well depth direction of the shaft body (1), and each group includes 4 to 8 anchoring points distributed in a circle.

8. The high-pressure large water inrush control device for deep vertical shafts according to claim 1, wherein: The relationship between the radius of curvature R of the inverted dome splicing structure (4) and the diameter D of the shaft body (1) satisfies: R = (0.5 - 0.7)D, and the gap between the inverted dome splicing structure (4) and the shaft inner wall (101) ≤ 5 mm.

9. The installation method of the deep shaft high-pressure large water inrush treatment device according to any one of claims 1 to 8, characterized in that, This installation method includes the following steps: Treatment of the S1 working face: Clean the working face of the shaft to the designed elevation, retain the crushed slag layer (3) with a thickness of more than 300 - 500 mm on the working face as the leveling layer, use a laser rangefinder to scan the contour of the inner wall (101) of the shaft, and record the actual curvature data of the inner wall (101) of the shaft; S2 Structure assembly: Install the inverted dome splicing structure (4) piece by piece through the hoisting system; With the assistance of the lifting hanging platform (10), sequentially assemble the dome strip-shaped components (402) in the clockwise direction, and connect adjacent components with M24 high-strength bolts; Start the adjusting hydraulic cylinder (403), adjust the outer diameter of the structure according to the pre-scanned data, and make the contact pressure between the water stop strip (8) and the shaft wall reach 0.3 - 0.5 MPa; Install the dome center piece (401), with the positioning error ≤ 3 mm; S3 Sealing grouting: Inject nano-level cement-based slurry through the pre-buried grouting pipeline (7), and gradually increase the grouting pressure to 4 - 5 MPa; Simultaneously inject polyurethane quick-setting material from the advanced grouting pipe (5) on the shaft working face, and control the grouting rate at 30 L / min; Stop grouting when the backflow volume < 5%, and carry out pressure stabilizing maintenance for 24 hours; S4 Structure recovery: After the strength of the grouting body reaches the designed value, relieve the pressure of the adjusting hydraulic cylinder (403); Remove the connecting bolts, and hoist the inverted dome splicing structure (4) piece by piece to the next construction section.

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