An ultra-deep shaft wall water seepage collection and drainage device

Abstract

The utility model discloses a kind of super-deep vertical shaft well wall water seepage collection and lead drainage device, including first drainage unit, second drainage unit being arranged on well wall and vertical main drain pipe being arranged along vertical shaft depth direction, first drainage unit includes drainage hole being drilled in well wall water seepage point, water diversion hose being inserted into drainage hole, and annular drainage pipe being arranged along well wall annular, second drainage assembly includes waterproof board covering in well wall water seepage area and water collecting assembly being arranged below the waterproof board, and the annular drainage pipe and water collecting assembly are respectively communicated with vertical main drain pipe by tee connector. First, second drainage unit can be arranged for different conditions Water seepage area is handled by leading, and good construction operation environment is created for vertical shaft lower part operation.

Description

Technical Field

[0001] This utility model relates to the field of vertical shaft construction technology, specifically to a device for collecting and draining seepage water from the wall of an ultra-deep vertical shaft. Background Technology

[0002] Vertical shafts are typically located inside mountains, especially in rainy southern regions where the water content of the mountains is high. During the excavation of vertical shafts, due to geological factors, water seepage along the shaft wall is likely to occur at joints and fissures.

[0003] Conventional seepage drainage methods often involve simple pipe insertion or sealing at the water outlet, which is insufficient to effectively drain high-pressure water deep within the rock mass and micro-fractures. Because the seepage is not completely cut off or drained, it flows along the well wall, making subsequent operations such as shotcreting and pressure pipe installation impossible. If sealing is chosen, the seepage will flow out through fissures elsewhere. Even if it can be sealed into the rock wall, the water will accumulate behind the concrete, creating hydrostatic pressure. This causes the shotcrete to separate from the rock wall before initial setting due to water pressure, leading to hollow areas, cracks, and even large-scale detachment, severely weakening the load-bearing capacity and durability of the well wall structure. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a device for collecting and draining seepage water from the wall of an ultra-deep vertical shaft.

[0005] A device for collecting and draining seepage water from an ultra-deep vertical shaft includes a first drainage unit, a second drainage unit, and a vertical main drainage pipe arranged along the depth direction of the shaft, all installed on the shaft wall. The first drainage unit includes a drainage hole drilled at the seepage point in the shaft wall, a water-guiding hose inserted into the drainage hole, and a circumferential drainage pipe arranged in a ring along the shaft wall. The second drainage unit includes a waterproof plate covering the seepage area of ​​the shaft wall and a water collection component arranged below the waterproof plate. The circumferential drainage pipe and the water collection component are respectively connected to the vertical main drainage pipe through a tee connector.

[0006] A further technical solution is to extend the water inlet hose to the outside of the drain hole and connect it to the circumferential drain pipe via an elbow, and seal the drain hole opening with a sealing material.

[0007] A further technical solution is: the drainage hole is 1.5m deep and 50mm in diameter.

[0008] A further technical solution is: the water collection component includes a flexible permeable pipe and a support for supporting the flexible permeable pipe. The top of the support has a through opening along the axial direction of the pipe body, and one side of the bottom of the support is arranged in an arc shape against the well wall. The contact point between the support and the well wall is sealed with foam adhesive.

[0009] A further technical solution is that the waterproof membrane is fixedly connected to the well wall by multiple steel nails.

[0010] A further technical solution is that the circumferential drainage pipe and the water collection assembly are both inclined downwards towards the vertical main drainage pipe and fixed to the well wall by multiple reinforcing bars.

[0011] A further technical solution is to set the inclination angle of the circumferential drain pipe and the water collection assembly to 10-15°.

[0012] A further technical solution is: the vertical main drainage pipe consists of multiple pipe sections connected by flanges in sequence, and two support anchor rods are respectively installed on both sides of the bottom of the flange of each pipe section, and the support anchor rods are inserted into the well wall.

[0013] The beneficial effects of this utility model are: This application is easy to install and manufacture, can use on-site materials, has a low cost, and can be completed simultaneously with the excavation of the shaft. It directs seepage water from the shaft wall to the main vertical drainage pipe through the first and second diversion units. For seepage points on the shaft wall, the seepage water is collected by a water-guiding hose inserted into the drainage hole of the first diversion unit, and then led to the main vertical drainage pipe through a circumferential drainage hose, facilitating the treatment of point-like or concentrated seepage points. The waterproofing plate of the second diversion unit presses down on seepage water in surface-like areas between the waterproofing plate and the shaft wall, allowing the seepage water to flow down the shaft wall and be collected by the water collection component before being discharged outside the shaft through the main vertical drainage pipe. The first and second diversion units can address seepage areas in different situations, effectively solving the quality problem of subsequent shotcrete failing to bond effectively to the shaft wall due to seepage, resulting in large-area detachment. It also creates a good working environment for operations below the shaft. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the arrangement of this device inside the shaft.

[0015] Figure 2 yes Figure 1 A cross-sectional view along the AA direction.

[0016] Figure 3 This is a side view of the water collection assembly.

[0017] Figure 4 This is a partial schematic diagram of the vertical main drain pipe.

[0018] In the picture: 1. Vertical main drainage pipe, 2. Water inlet hose, 3. Circular drainage pipe, 4. Bend, 5. Waterproof membrane, 6. Steel nail, 7. Water collection assembly, 71. Flexible permeable pipe, 72. Support tube, 8. Foam adhesive, 9. Pipe section, 10. Flange, 11. Supporting anchor, 12. Inserted bar, 13. T-connector, 14. Well wall, 15. Shotcrete. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0020] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the utility model.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] A device for collecting and draining seepage water from the wall of an ultra-deep vertical shaft, such as Figures 1-4 As shown, the system includes a first drainage unit, a second drainage unit, and a vertical main drainage pipe 1 arranged along the depth direction of the shaft, all installed on the well wall 14. The first drainage unit includes several drainage holes drilled at the seepage points of the well wall 14, a water-guiding hose 2 inserted into the drainage holes, and a circumferential drainage pipe 3 arranged in a ring along the well wall. The second drainage assembly includes a waterproof plate 5 covering the seepage area of ​​the well wall and a water collection assembly 7 arranged below the waterproof plate 5. The water collection assembly 7 is arranged in an arc along the well wall. The circumferential drainage pipe 3 and the water collection assembly 7 are respectively connected to the vertical main drainage pipe 1 through a three-way connector 13.

[0023] For point-like, concentrated seepage on the well wall 14, a first drainage unit is used for drainage and collection. Drainage holes extending into the well wall 14 are drilled at the seepage points. A water-guiding hose 2 extends to the outside of the drainage hole and connects to the circumferential drainage pipe 3 via a bend 4. The opening of the drainage hole is sealed with a sealing material, such as a sealant. The drainage hole is 1.5m deep and 50mm in diameter. The water-guiding hose 2 and the circumferential drainage pipe 3 are DN40 hoses. The circumferential drainage pipe 3 is inclined downwards towards the vertical main drainage pipe 1 and fixed to the well wall by multiple reinforcing bars 12. Clamps and gaskets are also installed between the circumferential drainage pipe 3 and the reinforcing bars 12.

[0024] For the surface seepage areas on the well wall, a second drainage unit is used for drainage and collection. A waterproof membrane 5 is used to cover the seepage area, controlling the seepage between the well wall and the waterproof membrane 5 and allowing it to fall down the well wall. The seepage flows into the water collection component 7, and then the water collection component 7 directs the seepage into the vertical main drain pipe 1. The waterproof membrane 5 is fixed to the well wall with multiple steel nails 6.

[0025] The water collection assembly 7 includes a flexible permeable pipe 71 and a support 72 for supporting the flexible permeable pipe 71. The top of the support 72 has a through opening along the axial direction of the pipe body. One side of the bottom of the support 72 is attached to the well wall and arranged in an arc shape along the well wall. The contact point between the support 72 and the well wall 14 is sealed with foam adhesive 8 to ensure that the support 72 is tightly attached to the well wall and to prevent seepage water from flowing below the support 72. The support 72 is inclined downward toward the vertical main drain pipe 1 to facilitate the flow of collected seepage water into the main drain pipe. It is fixed to the well wall by multiple reinforcing bars 12. Clamps and gaskets are also provided between the support 72 and the reinforcing bars 12.

[0026] Specifically, the flexible permeable pipe 71 is a DN40 blind drainage pipe, and the support tube 72 is made of DN50 PVC flexible hose planed along the central axis, giving the support tube 72 a U-shaped cross-section. The water collection assembly 7 is arranged below the waterproof membrane, with its end extending to within 20cm of the side edge of the waterproof membrane.

[0027] The vertical main drainage pipe 1 comprises multiple pipe sections 9 connected by sequential flanges 10. Each pipe section 9 has two supporting anchor rods 11 installed on both sides of the bottom of its flange 10. These anchor rods 11 are inserted into the well wall to secure the pipe section 9 and its connections. The vertical main drainage pipe extends downwards synchronously with the shaft excavation, discharging wastewater through the main drainage pipe 1 to a wastewater collection chamber located at the bottom of the shaft, thus draining seepage water outside the well. Specifically, pipe section 9 is made of DN100 galvanized steel pipe, with a single section length of 6m. The supporting anchor rods 11 have a diameter of 25mm, a length of 0.4m, and an insertion depth of 0.2m into the rock.

[0028] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A device for collecting and draining seepage water from the wall of an ultra-deep vertical shaft, characterized in that, The system includes a first drainage unit and a second drainage unit installed on the well wall, as well as a vertical main drainage pipe laid along the depth direction of the shaft. The first drainage unit includes a drainage hole drilled at the seepage point of the well wall, a water-guiding hose inserted into the drainage hole, and a circumferential drainage pipe laid in a ring along the well wall. The second drainage assembly includes a waterproof plate covering the seepage area of ​​the well wall and a water collection assembly set below the waterproof plate. The circumferential drainage pipe and the water collection assembly are respectively connected to the vertical main drainage pipe through a tee connector.

2. The ultra-deep vertical shaft well wall seepage collection and drainage device according to claim 1, characterized in that, The water inlet hose extends to the outside of the drain hole and connects to the circumferential drain pipe via an elbow. The drain hole opening is sealed with a sealing material.

3. The ultra-deep vertical shaft well wall seepage collection and drainage device according to claim 1, characterized in that, The drainage hole is 1.5m deep and 50mm in diameter.

4. The ultra-deep vertical shaft well wall seepage collection and drainage device according to claim 1, characterized in that, The water collection assembly includes a flexible permeable pipe and a support tube for supporting the flexible permeable pipe. The top of the support tube has a through opening along the axial direction of the pipe body, and one side of the bottom of the support tube is arranged in an arc shape against the well wall. The contact point between the support tube and the well wall is sealed with foam adhesive.

5. The ultra-deep vertical shaft well wall seepage collection and drainage device according to claim 1, characterized in that, The waterproof membrane is fixed to the well wall by multiple steel nails.

6. The ultra-deep vertical shaft well wall seepage collection and drainage device according to claim 1, characterized in that, Both the circumferential drain pipe and the water collection assembly are inclined downwards toward the vertical main drain pipe and are fixed to the well wall by multiple reinforcing bars.

7. A device for collecting and draining seepage water from the wall of an ultra-deep vertical shaft according to claim 6, characterized in that, The inclination angle of the circumferential drain pipe and water collection assembly is set to 10-15°.

8. The ultra-deep vertical shaft well wall seepage collection and drainage device according to claim 1, characterized in that, The vertical main drainage pipe consists of multiple pipe sections connected by flanges in sequence. Each pipe section has two support anchors on both sides of the bottom of the flange, and the support anchors are inserted into the well wall.

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