Novel device for shaft seepage water interception in shaft operation and maintenance period and construction drainage method

Abstract

The novel device comprises a plurality of groups of water intercepting bodies, each group of water intercepting bodies comprises a receiving groove and two drainage grooves, each drainage groove and each receiving groove are each a section of circular ring body, each section of circular ring body is of a hollow cavity structure, and the upper end, the front end and the rear end of each section of circular ring body are open; in each group of water intercepting bodies, the two drainage grooves are arranged at an interval, and are connected and communicated with each other through a receiving groove; a water outlet is formed in the bottom of the receiving groove; the multiple water intercepting bodies are used for being arranged in a shaft and attached to the well wall, and the multiple water intercepting bodies are sequentially and annularly connected and surround the well wall to form a circular ring body. The upper end of the cotton yarn is attached to the inner wall of an upper shaft, and the lower end of the cotton yarn extends to the drainage groove and the bearing groove and is used for draining seepage water of the shaft wall into the drainage groove and the bearing groove. By the adoption of the novel device and the construction drainage method, effective drainage of seepage water of the vertical shaft can be achieved, and the corrosion influence of well wall seepage water overflow on the structure and equipment facilities is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of vertical shaft construction, and particularly relates to a novel device for intercepting water seepage in a shaft during the operation and maintenance period of the vertical shaft and a construction drainage method. Background Art

[0002] After the construction of the shaft is completed, there will still be some water seepage. When the water seepage in the shaft is large, the water will flow down along the shaft wall, eroding and destroying the concrete structure of the shaft wall for a long time, which will affect the service life of the shaft wall structure. At the same time, the water seepage will continue to corrode the equipment in the shaft, such as wire ropes, shortening their service life and affecting operational safety. Personnel will also encounter water seepage when riding in the tank and entering and exiting the cage, resulting in a poor experience for the operators.

[0003] At present, there are two main ways to deal with water seepage in the wellbore: grouting and water interception. Grouting can control the amount of water seepage within a certain range, and the remaining water seepage is drained by water interception. In the existing water interception device, one part is to weld a large number of water interception grooves at the bottom of the well, the steel structure is easy to corrode, and the welding amount is large. Another part is fixed to the inner wall of the wellbore by resin anchor rods, the drilling depth is large, and it is easy to cause damage to the wellbore. In addition, the water interception grooves are mostly set horizontally, which is not conducive to drainage. Summary of the invention

[0004] The purpose of the present invention is to provide a new device for intercepting water seepage in the shaft during the operation and maintenance period of a vertical shaft and a construction drainage method. Through the device and the construction drainage method, the effective drainage of water seepage in the shaft of the vertical shaft can be realized, and the corrosion effect of water seepage on the structure and equipment facilities caused by the overflow of water seepage on the shaft wall can be reduced. At the same time, water can be effectively intercepted, and the possibility of water seepage continuing to overflow downward from the gap between the new device and the shaft wall can be reduced, thereby effectively protecting the shaft wall that has not seeped water from being eroded and prolonging the service life of the shaft wall structure and equipment facilities.

[0005] The present invention adopts the following technical scheme: a new device for water seepage interception during shaft operation and maintenance, comprising a plurality of water interception bodies, each of which comprises a receiving groove and two drainage grooves, each of which is a section of annular body, each section of the annular body is a hollow cavity structure, and the upper end and the front and rear ends are open;

[0006] In each group of water-cutting bodies, two drainage grooves are arranged at intervals, connected and communicated through a receiving groove; a drainage port is provided at the bottom of the receiving groove; multiple groups of water-cutting bodies are used to be arranged in a wellbore and attached to the well wall, and multiple water-cutting bodies are connected in an annular direction in sequence to form a torus around the well wall;

[0007] It also includes cotton yarn, the upper end of which is used to stick to the inner wall of the upper wellbore, and the lower end extends to the drainage groove and the receiving groove, and is used to drain the seepage water from the well wall into the drainage groove and the receiving groove, and discharge it from the drainage outlet.

[0008] Furthermore, the bottom plate of the drainage trough is horizontal. When arranged in the wellbore, the bottom plates of the two drainage troughs are placed in an inclined state, with the far end being high and the close end being low; the bottom plate of the receiving trough is arc-shaped, and the arc-shaped convex side is facing downward; the receiving trough is arranged horizontally, and the inner and outer widths of the receiving trough are consistent with the inner and outer widths of the drainage trough, and the two ends of the bottom plate of the receiving trough are connected to the close ends of the bottom plates of the two drainage troughs.

[0009] Furthermore, between two adjacent groups of water-cutting bodies, the two drainage grooves are connected by a guide groove, which is a section of annular body. The annular body is a hollow cavity structure, and its upper end and front and rear ends are open. The bottom plate is arc-shaped, and the arc-shaped protrusion side faces upward.

[0010] Furthermore, the gaps between the inner plates of the receiving groove, the drainage groove and the guide groove and the well wall are filled with polyurethane, and the polyurethane is used to expand and fill the gaps when the seepage water flows through, thereby reducing the seepage water flow.

[0011] Furthermore, a plurality of connection holes are provided on the inner side plates of the receiving groove, the drainage groove and the guide groove, and the plurality of connection holes are arranged in an annular manner and spaced apart, and are used to fix each receiving groove, the drainage groove and the guide groove to the well wall by means of expansion bolts.

[0012] Furthermore, multiple hanging holes are provided on the outer plates of each receiving groove, drainage groove and guide groove, and the multiple hanging holes are arranged at intervals in the annular direction. The hanging holes are used to insert iron wire hooks, and the other end of the iron wire hook is hung on the pipeline, and the pipeline is vertically arranged in the wellbore. The receiving groove, drainage groove and guide groove are all made of synthetic resin material.

[0013] Furthermore, a drainage pipe is connected to the lower end of the bottom drainage outlet of the receiving groove.

[0014] The present invention also discloses an annular water interception system for intercepting water seepage in the shaft during the operation and maintenance period of the shaft, including the above-mentioned new device for intercepting water seepage in the shaft during the operation and maintenance period of the shaft, multiple new devices are used to be set in the shaft, and are arranged at intervals in the upper and lower parts, the lower end of the drainage pipe of the upper new device extends to the adjacent new device in the lower part, and the drainage pipe of the lowest new device extends to the bottom of the shaft.

[0015] The present invention also discloses a construction and drainage method of the annular water interception system for intercepting water seepage in the shaft during the operation and maintenance period of the vertical shaft, comprising the following steps:

[0016] Step 1: multiple new devices are placed in the wellbore and arranged at intervals up and down, and polyurethane is filled between the inner plate of each new device and the well wall; the upper end of the cotton yarn is covered on the well wall above the new device, and the lower end is extended to the drainage groove and the receiving groove, and the cotton yarn is used as a drainage channel;

[0017] Step 2: The seepage water from the well wall flows to the polyurethane, which foams and expands to completely fill the gap between the inner plate and the well wall, reducing the downward flow of seepage water; the second way it flows along the cotton yarn to the receiving groove, drainage groove and guide groove, and the water flows down along the guide groove to the drainage grooves at both ends, flows into the receiving groove, and flows into the adjacent new device below through the drainage pipe; the new device at the bottom guides the received seepage water into the bottom of the well through the drainage pipe.

[0018] The beneficial effects of the present invention are: 1. The receiving groove, drainage groove and guide groove are filled with polyurethane and the well wall is used to form a drainage channel through cotton yarn, which changes the flow direction of the seepage water and can effectively reduce the seepage water from the well wall to the non-seepage section below, and reduce the risk of the non-seepage section of the well wall being washed and eroded by water. 2. The bottom plate of the new device is sloped, and the seepage water flows into the new device, avoiding congestion and enabling better drainage. 3. The new device adopts synthetic resin material, which is lighter, more corrosion-resistant and has a long service life. 4. The new device is fixed again by using iron wire to connect with the pipeline, which improves safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a new device for intercepting water seepage in the shaft during the operation and maintenance period of the shaft;

[0020] FIG2 is a schematic diagram showing a new device for intercepting water seepage in a shaft during shaft operation and maintenance, arranged along the shaft wall;

[0021] a is the well wall partition diagram;

[0022] b is the layout expansion diagram of the new device;

[0023] Figure 3 It is a structural schematic diagram of the drainage trough;

[0024] Figure 4 It is a structural schematic diagram of the receiving groove;

[0025] Figure 5 is a schematic diagram of the structure of the diversion trough;

[0026] Among them: 1. Drainage trough, 4. Connection hole; 5. Hanging hole; 6. Diversion trough; 7. Receiving trough; 8. Well wall; 10. Drainage pipe; 11. Expansion bolt; 12. Polyurethane; 13. Cotton yarn; 14. Iron wire; 15. Pipeline. DETAILED DESCRIPTION

[0027] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] The present invention provides a novel device for cutting off water seepage in the shaft during the operation and maintenance period of the shaft, such as Figure 1As shown in a and b in FIG. 2 , it includes multiple groups of water-cutting bodies, each group of water-cutting bodies includes a receiving groove 7 and two drainage grooves 1, each drainage groove 1 and receiving groove 7 is a section of annular body, each section of the annular body is a hollow cavity structure, and the upper end and the front and rear ends are open;

[0029] In each group of water-cutting bodies, two drainage grooves 1 are arranged at intervals, and are connected and communicated through a receiving groove 7; a drainage port is provided at the bottom of the receiving groove 7; the diameter of the drainage port can be set to 6 cm; multiple groups of water-cutting bodies are used to be arranged in the wellbore and attached to the well wall 8, and multiple water-cutting bodies are connected in an annular direction in sequence to form a torus around the well wall 8;

[0030] It also includes cotton yarn 13, the upper end of which is used to cover the upper well wall 8, and the lower end extends to the drainage groove 1 and the receiving groove 7. The cotton yarn 13 is used to form a drainage channel to drain the seepage water from the upper well wall 8 into the drainage groove 1 and the receiving groove 7, and the seepage water is discharged from the drainage port in the receiving groove 7.

[0031] When the new device is used, the water seepage from the well wall 8 is divided into two paths. One path flows to the polyurethane 12. The polyurethane 12 foams and expands when it meets water, completely filling the gap between the inner plate and the well wall 8, reducing the water seepage flowing downward; the other path flows along the cotton yarn 13 to the receiving groove 7, the drainage groove 1 and the guide groove 6.

[0032] like Figure 3 As shown, the bottom plate of the drainage trough 1 is horizontal. When set in the wellbore, the bottom plates of the two drainage troughs 1 are placed in an inclined shape, with the far end being high and the close end being low. Figure 4 As shown, the bottom plate of the receiving groove 7 is arc-shaped, and the arc-shaped protrusion side is downward; the receiving groove 7 is horizontally arranged, the inner and outer widths of the receiving groove 7 are consistent with the inner and outer widths of the drainage groove 1, and the two ends of the bottom plate of the receiving groove 7 are connected to the near ends of the bottom plates of the two drainage grooves 1.

[0033] like Figure 5 As shown, between two adjacent groups of water-cutting bodies, two drainage grooves 1 are connected by a guide groove 6. The guide groove 6 is a section of an annular body. The annular body is a hollow cavity structure, and its upper end and front and rear ends are open. The bottom plate is arc-shaped, and the arc-shaped protrusion is facing upward.

[0034] The gaps between the inner plates of the receiving groove 7, the drainage groove 1 and the guide groove 6 and the well wall 8 are filled with polyurethane 12. The polyurethane 12 is used to expand and fill the gaps when the seepage water flows through, thereby reducing the seepage water flow.

[0035] A plurality of connection holes 4 are provided on the inner side plates of the receiving groove 7 , the drainage groove 1 and the guide groove 6 . The plurality of connection holes 4 are arranged circumferentially at intervals and are used to fix the receiving groove 7 , the drainage groove 1 and the guide groove 6 to the well wall 8 by means of expansion bolts 11 .

[0036] A plurality of hanging holes 5 are provided on the outer plates of each receiving groove 7, drainage groove 1 and diversion groove 6. The plurality of hanging holes 5 are arranged at intervals in the annular direction. The hanging holes 5 are used to insert a wire hook 14. The other end of the wire hook 14 is hung on a pipe 15. The pipe 15 is vertically arranged in the wellbore. The wire hook 14 is hung on the pipe 15 to avoid the expansion bolt 11 from failing and the new device from falling.

[0037] The inner and outer widths of the receiving groove 7 are consistent with the inner and outer widths of the drainage groove 1, such as a bottom width of 10 cm. The two ends of the bottom plate of the receiving groove 7 are connected to the near ends of the bottom plates of the two drainage grooves 1, and the inner and outer plates of the receiving groove 7 are connected to the inner and outer plates of the two drainage grooves 1; the front and rear ends of the bottom plate of the guide groove 6 are connected to the ends of the bottom plates of the two drainage grooves 1, and the inner and outer plates of the guide groove 6 are respectively connected to the inner and outer plates of the two drainage grooves 1. AB glue is used to connect the plates.

[0038] The thickness of the inner plate, the outer plate and the bottom plate is about 5 mm, and the height of the inner plate is higher than that of the outer plate; the inner plate is 20 cm higher than the outer plate, for example, the outer plate is 10 cm higher. Then the position of the connection hole 4 on the inner plate is higher than the height of the hanging hole 5 on the outer plate, and generally the height of the connection hole 4 is basically consistent with the height of the outer plate.

[0039] The lower end of the bottom drain port of the receiving groove 7 is connected with a drain pipe 10. The drain pipe 10 is a PVC pipe and is connected to the lower end of the receiving groove 7 by AB glue. The lower section of the drain pipe 10 is fixed to the well wall 8 by a U-shaped clip. The diameter of the drain pipe 10 can be selected to be 8 cm. If only one new device is set in the well shaft, the lower end of the drain pipe 10 of the new device is directly connected to the well bottom, and the seepage water is finally discharged out of the well through the water tank at the bottom of the well. If multiple new devices are set, the following water interception system is adopted.

[0040] The present invention also discloses an annular water interception system for intercepting water seepage in the shaft during the operation and maintenance period of the shaft, comprising a plurality of the above-mentioned new devices for intercepting water seepage in the shaft during the operation and maintenance period of the shaft, wherein the plurality of new devices are all used to be arranged in the shaft, and are arranged at intervals in the upper and lower parts, wherein the lower end of the drainage pipe 10 of the upper new device extends into the adjacent new device in the lower part, and the drainage pipe 10 of the lowest new device extends to the bottom of the shaft.

[0041] The present invention also discloses a construction and drainage method of the annular water interception system for intercepting water seepage in the shaft during the operation and maintenance period of the vertical shaft, comprising the following steps:

[0042] Step 1: multiple new devices are arranged in the wellbore and spaced apart from each other, and polyurethane 12 is filled between the inner plate of each new device and the well wall 8; the upper end of the cotton yarn 13 is covered on the well wall 8 above the new device, and the lower end is extended to the drainage groove 1, the guide groove 6 and the receiving groove 7, and the cotton yarn 13 is used as a drainage channel to make the water seeping from the well wall 8 flow along the cotton yarn 13 to the drainage groove 1, the guide groove 6 and the receiving groove 7;

[0043] Step 2: The seepage water from the well wall 8 flows to the polyurethane 12, which foams and expands to completely fill the gap between the inner plate and the well wall 8; the second way flows along the cotton yarn 13 to the receiving groove 7, the drainage groove 1 and the guide groove 6, and the seepage water flows down along the guide groove 6 to the drainage grooves 1 at both ends, flows into the receiving groove 7, and flows into the adjacent new device below through the drainage pipe 10; the new device at the bottom guides the received seepage water to the bottom of the well through the drainage pipe 10, and finally discharges it out of the well through the water tank at the bottom of the well. The seepage water from the well wall 8 flows along the cotton yarn 13, which reduces the risk of the seepage water flowing downward along the well wall 8 and reduces the risk of the well wall being washed and eroded by water in the non-seepage section.

Claims

1. A new device for cutting off water seepage in a shaft during shaft operation and maintenance, characterized in that: It comprises a plurality of groups of water-cutting bodies, each group of the water-cutting bodies comprises a receiving groove (7) and two drainage grooves (1), each of the drainage grooves (1) and the receiving groove (7) is a section of annular body, each section of the annular body is a hollow cavity structure, and the upper end and the front and rear ends are all open; In each group of the water-cutting bodies, two drainage grooves (1) are arranged at intervals, and are connected and communicated through the receiving groove (7); a drainage port is provided at the bottom of the receiving groove (7); multiple groups of the water-cutting bodies are used to be arranged in a wellbore and attached to the well wall (8); multiple water-cutting bodies are connected in a circular direction in sequence to form a circular body around the well wall (8); It also includes cotton yarn (13), the upper end of which is used to cover the upper well wall (8), and the lower end of which extends to the drainage groove (1) and the receiving groove (7). The cotton yarn (13) is used to form a drainage channel to drain the seepage water from the upper well wall (8) into the drainage groove (1) and the receiving groove (7).

2. A novel device for cutting off water seepage in a shaft during shaft operation and maintenance as claimed in claim 1, characterized in that: The bottom plate of the drainage groove (1) is horizontal. When arranged in the wellbore, the bottom plates of the two drainage grooves (1) are placed in an inclined state, with the far end being higher and the close end being lower; the bottom plate of the receiving groove (7) is arc-shaped, with the arc-shaped protrusion facing downward; the receiving groove (7) is arranged horizontally, the inner and outer widths of the receiving groove (7) are consistent with the inner and outer widths of the drainage groove (1), and the two ends of the bottom plate of the receiving groove (7) are connected to the close ends of the bottom plates of the two drainage grooves (1).

3. A novel device for cutting off water seepage in a shaft during shaft operation and maintenance as claimed in claim 2, characterized in that: Between two adjacent groups of water interception bodies, the two drainage grooves (1) are connected via a guide groove (6), wherein the guide groove (6) is a section of an annular body, which is a hollow cavity structure, and its upper end and front and rear ends are open, and the bottom plate is arc-shaped, with the arc-shaped protrusion facing upward.

4. A novel device for intercepting water seepage in a shaft during shaft operation and maintenance as claimed in claim 3, characterized in that: The gaps between the inner plates of the receiving groove (7), the drainage groove (1) and the guide groove (6) and the well wall (8) are filled with polyurethane (12), and the polyurethane (12) is used to expand and fill the gaps when seepage water flows through, thereby reducing the flow of seepage water.

5. A novel device for intercepting water seepage in a shaft during shaft operation and maintenance as claimed in claim 4, characterized in that: A plurality of connection holes (4) are provided on the inner side plates of the receiving groove (7), the drainage groove (1) and the guide groove (6); the plurality of connection holes (4) are arranged at intervals in the annular direction and are used to fix the receiving groove (7), the drainage groove (1) and the guide groove (6) to the well wall (8) by means of expansion bolts (11).

6. A novel device for intercepting water seepage in a shaft during shaft operation and maintenance as claimed in claim 5, characterized in that: A plurality of hanging holes (5) are provided on the outer side plates of each of the receiving groove (7), the drainage groove (1) and the guide groove (6), and the plurality of hanging holes (5) are arranged at intervals in a circumferential direction. The hanging holes (5) are used to insert a wire hook (14), and the other end of the wire hook (14) is hung on a pipeline, and the pipeline is vertically arranged in the wellbore.

7. A novel device for intercepting water seepage in a shaft during shaft operation and maintenance as claimed in claim 6, characterized in that: The lower end of the bottom drain outlet of the receiving groove (7) is connected to a drain pipe (10).

8. A novel device for intercepting water seepage in a shaft during shaft operation and maintenance as claimed in claim 7, characterized in that: The receiving groove (7), the drainage groove (1) and the guide groove (6) are all made of synthetic resin material.

9. An annular water interception system for intercepting water seepage in a shaft during shaft operation and maintenance, comprising a novel device for intercepting water seepage in a shaft during shaft operation and maintenance as described in any one of claims 1 to 8, characterized in that: A plurality of the new devices are used to be arranged in a wellbore and are arranged in an upper and lower interval manner. The lower end of the drainage pipe (10) of the upper new device extends into the lower adjacent new device, and the drainage pipe (10) of the lowest new device extends to the bottom of the well.

10. A construction and drainage method for an annular water interception system for intercepting water seepage in a shaft during shaft operation and maintenance as claimed in claim 9, characterized in that: The steps include: Step 1: multiple novel devices are arranged in a wellbore and spaced apart from each other, and polyurethane (12) is filled between the inner plate of each novel device and the well wall (8); the upper end of the cotton yarn (13) is covered on the well wall (8) above the novel device, and the lower end extends to the drainage groove (1), the receiving groove (7) and the guide groove (6), and the cotton yarn (13) serves as a drainage channel; Step 2, the seepage water from the well wall (8) flows to the polyurethane (12) in one direction, and the polyurethane (12) foams and expands to completely fill the gap between the inner plate and the well wall (8), thereby reducing the seepage water flowing downward; the second direction flows along the cotton yarn (13) to the receiving groove (7), the drainage groove (1) and the guide groove (6), and the water flows down along the guide groove (6) to the drainage grooves (1) at both ends, flows into the receiving groove (7), and flows into the adjacent new device below through the drainage pipe (10); the new device at the bottom guides the received seepage water into the bottom of the well through the drainage pipe (10).

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