CN216841801U

CN216841801U - Shaft drainage system

Info

Publication number: CN216841801U
Application number: CN202121959275.XU
Authority: CN
Inventors: 江俊杰; 张睿; 余涛; 李小勇; 陈代华; 徐迪; 魏力峰; 蒲松
Original assignee: Southwest Jiaotong University; Sichuan Chuanjiao Road and Bridge Co Ltd
Current assignee: Southwest Jiaotong University; Sichuan Chuanjiao Road and Bridge Co Ltd
Priority date: 2021-08-19
Filing date: 2021-08-19
Publication date: 2022-06-28
Anticipated expiration: 2031-08-19

Abstract

The utility model relates to the technical field of mountain tunnel construction of underground engineering, in particular to a shaft drainage system, which comprises a water collecting and drainage component, a primary support, a waterproof board, a secondary lining and a water collecting pool; preliminary bracing, waterproof board and secondary lining are the loop configuration, and set gradually by outer to interior, the drainage subassembly that catchments sets up between waterproof board and secondary lining, the drainage subassembly that catchments includes vertical drainage blind pipe, hoop drainage blind pipe and drainage pipe, hoop drainage blind pipe slope sets up, the hoop drainage blind pipe is provided with a plurality ofly along vertical direction side by side, the vertical setting of vertical drainage blind pipe, a plurality of hoop drainage blind pipes pass through vertical drainage blind pipe intercommunication, the bottom intercommunication of the hoop drainage blind pipe of drainage pipe one end and slope, the drainage pipe other end and catch basin intercommunication. The utility model discloses in being applicable to the shaft with common and effectual drainage system in the tunnel after reforming transform, solved the problem of groundwater seepage in the shaft better.

Description

Shaft drainage system

Technical Field

The utility model relates to an underground works mountain tunnel construction technical field especially relates to a shaft drainage system.

Background

In the construction of modern traffic infrastructure, with the continuous promotion of railway network construction in western mountain areas, various long tunnel projects in difficult mountain areas emerge continuously. In the construction of the tunnel with the long and large mountains, the vertical shaft, the inclined shaft, the transverse hole, the horizontal guide and the like are used as auxiliary tunnel means, so that the working surface can be increased, the problems of ventilation, transportation, slag discharge and the like are solved, the tunnel construction efficiency is improved, and the tunnel occupies a great proportion in the actual construction of the railway tunnel.

Generally, inclined shafts, transverse holes, parallel pilot holes and the like are relatively easy to construct, but in the construction of tunnels with unsatisfactory geological conditions and large burying, the three auxiliary means have the problems of difficult arrangement, unobvious construction efficiency improvement effect and the like, and the direct arrangement of a vertical shaft in the middle of the tunnel is often a necessary option. When the vertical shaft passes through the stratum with complex geological conditions and abundant underground water systems, the sudden surge accident is very likely to occur, and the construction safety is threatened. In the prior shaft construction, underground water is generally detected and firstly treated and then constructed, and the treatment mode is generally to perform grouting plugging on a water outlet crack and a weak rock mass behind the wall of the shaft; pumping and draining the underground water; or groundwater freezing may be performed. However, due to the fact that the distribution regularity of underground water is poor in a fracture development zone, blind areas exist in advanced treatment means such as vertical shaft wall post grouting and the like, and investment and construction risks of direct pumping and draining means are uncontrollable.

Chinese patent application No. CN201210561693.2 discloses a method for pre-grouting and water plugging of a permeable layer in a shaft, which comprises the steps of reserving a complete waterproof rock layer, well shaft side water spraying treatment, building a water filtering layer, installing a water collecting well and a waterproof layer, installing and fixing a grouting guide pipe, pouring a concrete grout stop pad, grouting the water filtering layer, forming a hole through a grouting hole and paving a grouting guide pipe for grouting; the method can be effectively applied to pre-grouting and water plugging of the permeable layer in the shaft.

But above-mentioned scheme adopts the water shutoff mode of slip casting to carry out the preliminary treatment to the shaft, can not fully guarantee that each region homoenergetic in the shaft obtains effectual slip casting and handles, has the slip casting blind area, and under this situation, groundwater can be followed the infiltration of slip casting blind area and gone into in the shaft, and the problem of groundwater seepage in the shaft can not be solved to above-mentioned scheme.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a shaft drainage system aiming at the problems in the background technology, which comprises a water collecting and drainage component, a primary support, a waterproof board, a secondary lining and a water collecting pool; preliminary bracing, waterproof board and secondary lining are the loop configuration, and set gradually by outer to interior, the drainage subassembly that catchments sets up between waterproof board and secondary lining, the drainage subassembly that catchments includes vertical drainage blind pipe, hoop drainage blind pipe and drainage pipe, hoop drainage blind pipe slope sets up, hoop drainage blind pipe is provided with a plurality ofly along vertical direction side by side, the vertical setting of vertical drainage blind pipe, vertical drainage blind pipe is the annular on secondary lining and evenly is provided with a plurality ofly, a plurality of hoop drainage blind pipes pass through vertical drainage blind pipe intercommunication, drainage pipe one end communicates with the bottom of the hoop drainage blind pipe of slope, the drainage pipe other end communicates with the catch basin.

Preferably, the included angle between the central axis of the circumferential drainage blind pipe and the vertical direction is 20 degrees.

Preferably, the vertical drainage blind pipe and the annular drainage blind pipe are both made of fiber materials, and geotextile materials are wrapped outside the vertical drainage blind pipe and the annular drainage blind pipe.

Preferably, the waterproof board is made of polyethylene material.

Compared with the prior art, the utility model discloses following profitable technological effect has:

the utility model discloses compare in the past to shaft seepage water extraction pretreatment's mode, be applicable to the shaft after reforming transform with common and effectual drainage system in the tunnel, solved the problem of groundwater seepage in the shaft better.

Drawings

FIG. 1 is an elevational, cross-sectional view of an embodiment of the present invention;

FIG. 2 is a cross-sectional view of an embodiment of the present invention;

FIG. 3 is a diagram showing the relationship between the circumferential drainage blind pipe and the shaft;

FIG. 4 is a diagram showing the positional relationship between the drain pipes and the sump;

FIG. 5 is a detailed view of a drainage blind pipe.

Reference numerals: 1. a vertical drainage blind pipe; 2. a circular drainage blind pipe; 3. a water discharge pipeline; 4. primary support; 5. a waterproof sheet; 6. secondary lining; 7. a water collecting tank; 8. a fibrous material; 9. geotextile materials.

Detailed Description

As shown in fig. 1-5, the utility model provides a shaft drainage system, which comprises a water collecting and drainage component, a primary support 4, a waterproof board 5, a secondary lining 6 and a water collecting tank 7; preliminary bracing 4, waterproof board 5 and secondary lining 6 are the loop configuration, and set gradually by outer to interior, the drainage subassembly that catchments sets up between waterproof board 5 and secondary lining 6, the drainage subassembly that catchments includes vertical drainage blind pipe 1, hoop drainage blind pipe 2 and drainage pipe 3, the slope of hoop drainage blind pipe 2 sets up, hoop drainage blind pipe 2 is provided with a plurality ofly along vertical direction side by side, the vertical setting of vertical drainage blind pipe 1, vertical drainage blind pipe 1 is the annular on secondary lining 6 and evenly is provided with a plurality ofly, a plurality of hoop drainage blind pipes 2 pass through vertical drainage blind pipe 1 intercommunication, drainage pipe 3 one end communicates with the bottom of the hoop drainage blind pipe 2 of slope, the drainage pipe 3 other end communicates with drainage pipe catch basin 7, catch basin 7 is used for receiving the groundwater that flows out from drainage pipe 3.

Preferably, the included angle between the central axis of the annular drainage blind pipe 2 and the vertical direction is 20 degrees, and underground water permeating into the annular drainage blind pipe 2 can smoothly slide into the drainage pipeline 3.

Preferably, the vertical drainage blind pipe 1 and the annular drainage blind pipe 2 are both made of fiber materials 8, and the outside of the vertical drainage blind pipe 1 and the outside of the annular drainage blind pipe 2 are both wrapped with geotextile materials 9.

Preferably, the waterproof sheet 5 is made of polyethylene material.

When the method is specifically implemented, firstly, a primary support 4 of the shaft is constructed, then a waterproof plate 5 is laid along the primary support 4, when a secondary lining 6 is constructed, when one section is constructed, firstly, the waterproof plate 5 is attached, a circumferential drainage blind pipe 2 is obliquely arranged, then, vertical drainage blind pipes 1 are uniformly arranged along the circumferential direction, the vertical drainage blind pipes 1 are connected with the circumferential drainage blind pipes 2, finally, vertical drainage pipes 3 are arranged at the lowest positions of the circumferential drainage blind pipes 2 and are connected with the circumferential drainage blind pipes 2, then, the secondary lining 6 is poured, and the whole drainage pipeline is wrapped. And finally, a water collecting tank 7 is arranged at the bottom of the vertical shaft. When the shaft water-proof and drainage system works, the waterproof plate 5 behind the primary support 4 blocks partial water seepage, the underground water seeping from the waterproof plate 5 is collected by the water collecting and drainage assembly, the underground water is filtered by the geotextile material 9 and then enters the vertical drainage blind pipes 1 and the annular drainage blind pipes 2, the water in each section of the vertical drainage blind pipes 1 firstly flows into the annular drainage blind pipes 2, the annular drainage blind pipes 2 are obliquely arranged, the water in the annular drainage blind pipes 2 can be collected into the drainage pipeline 3, and finally all the leaked underground water is drained to the water collecting tank 7 at the bottom of the shaft through the drainage pipeline 3. This design is compared in the mode of processing before to shaft seepage water extraction in the past, is applicable to the shaft after reforming transform with common and effectual drainage system in the tunnel to the problem of groundwater seepage in the better reduction shaft.

The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited thereto, and various changes can be made without departing from the gist of the present invention within the knowledge of those skilled in the art.

Claims

1. A vertical shaft drainage system is characterized by comprising a water collecting and drainage component, a primary support (4), a waterproof board (5), a secondary lining (6) and a water collecting pool (7);

preliminary bracing (4), waterproof board (5) and secondary lining (6) are the loop configuration, and set gradually by outer to interior, the drainage subassembly that catchments sets up between waterproof board (5) and secondary lining (6), the drainage subassembly that catchments includes vertical drainage blind pipe (1), hoop drainage blind pipe (2) and drainage pipe (3), hoop drainage blind pipe (2) slope sets up, hoop drainage blind pipe (2) are provided with a plurality ofly side by side along vertical direction, vertical drainage blind pipe (1) vertical setting, vertical drainage blind pipe (1) is the annular on secondary lining (6) and evenly is provided with a plurality ofly, a plurality of hoop drainage blind pipes (2) communicate through vertical drainage blind pipe (1), drainage pipe (3) one end communicates with the bottom of the hoop drainage blind pipe (2) of slope, the drainage pipe (3) other end communicates with catch basin (7).

2. A shaft drainage system as claimed in claim 1, characterised in that the angle between the central axis of the circumferential drainage blind pipe (2) and the vertical is 20 °.

3. A vertical shaft drainage system according to claim 1, characterized in that the vertical drainage blind pipe (1) and the circumferential drainage blind pipe (2) are both made of fiber materials (8), and the vertical drainage blind pipe (1) and the circumferential drainage blind pipe (2) are both wrapped with geotextile materials (9).

4. A shaft drainage system as claimed in claim 1, characterised in that the flashing (5) is made of polyethylene material.