CN218439462U

CN218439462U - Tunnel bottom seepage drainage structure

Info

Publication number: CN218439462U
Application number: CN202222227593.8U
Authority: CN
Inventors: 朱长伟; 金�雨; 王姣
Original assignee: Anhui Chuangbo Jiaying Track Equipment Co ltd
Current assignee: Anhui Chuangbo Jiaying Track Equipment Co ltd
Priority date: 2022-08-24
Filing date: 2022-08-24
Publication date: 2023-02-03
Anticipated expiration: 2032-08-24

Abstract

The utility model relates to a tunnel bottom seepage drainage structure, which comprises blind ditches which are positioned below an inverted arch at the tunnel bottom and are in latticed transverse and longitudinal distribution, and adjacent blind ditches are mutually connected through a four-way joint to drain karst tunnel bottom water; the four-way joint comprises pipes which are longitudinally distributed, two ends of each pipe are connected with blind ditches which are longitudinally distributed, two stone wall pipes which are transversely distributed are connected to the middle of each pipe, and one side, far away from each pipe, of each stone wall pipe is connected with the blind ditches which are transversely distributed. The tunnel bottom seepage drainage structure has better drainage effect on karst seepage water in the karst tunnel by laying the blind ditches and the blind pipes used by the blind ditches, thereby achieving the targeted seepage treatment effect; the rubber ring can avoid the junction to appear the infiltration phenomenon, realizes the zonulae occludens of french drain, avoids the infiltration water to get into in the country rock structure, guarantees country rock structural strength.

Description

Tunnel bottom seepage drainage structure

Technical Field

The utility model belongs to the technical field of the drainage oozes at the bottom of the tunnel, concretely relates to drainage structures oozes at the bottom of tunnel to karst tunnel development.

Background

In the southwest of China, there are numerous mountains, and with the rapid development of high-speed rail construction business, the problem of water leakage in the operation process is very common. The Guizhou tunnel is the karst tunnel mostly, karst aquatic in the tunnel contains a large amount of acid-base ions, can produce the erosion effect to the ground body, make the intensity greatly reduced of country rock structure, in addition in the karst region, the inside a large amount of fissures that are distributing of soil body, crack and joint structure, the karst is during development, can produce more fault plane and deposit aspect, in case the karst tunnel produces the condition that gushes mud suddenly, these holes, the fault plane all will provide the passageway for the water flows, under the influence of water pressure, the self stability of country rock structure also can sharply reduce, consequently, if karst infiltration water can not in time discharge, will cause very big influence to the underground construction in interval tunnel. Therefore, the permeation treatment of the karst water in the tunnel construction process becomes more important, and in order to ensure the better drainage of the karst permeated water in the karst tunnel, a tunnel bottom permeation drainage structure developed aiming at the problem of drainage of the karst permeated water in the karst tunnel is urgently needed.

Disclosure of Invention

The utility model aims at providing a tunnel bottom seepage drainage structure in order to solve the above problems.

The utility model discloses a following technical scheme realizes above-mentioned purpose:

a tunnel bottom seepage drainage structure comprises blind ditches which are positioned below an inverted arch of a tunnel bottom and are in latticed transverse and longitudinal distribution, and adjacent blind ditches are mutually connected through a four-way joint to drain karst tunnel bottom water;

the four-way joint comprises pipes which are longitudinally distributed, two ends of each pipe are connected with blind ditches which are longitudinally distributed, two stone wall pipes which are transversely distributed are connected to the middle of each pipe, and one side, far away from each pipe, of each stone wall pipe is connected with the blind ditches which are transversely distributed.

As a further optimization scheme of the utility model, the outer surface of the stone wall pipe is sleeved with a rubber ring connected with the blind ditch.

As the utility model discloses a further optimization scheme, the french drain is the assembled drainage french drain that oozes, the used blind pipe external diameter of french drain is 315mm.

As the utility model discloses a further optimization scheme, the cross joint external diameter is 270mm or the internal diameter is 315mm for the external diameter.

The beneficial effects of the utility model reside in that:

(1) The utility model discloses, through set up latticed just be horizontal longitudinal distribution's french drain in tunnel end invert below to through four way connection interconnect between the messenger indulges horizontal french drain, thereby the water at the bottom of the drainage tunnel, lay the blind pipe that french drain and french drain used and have better drainage effect to karst infiltration water in the karst tunnel, reach and make pointed references and carry out infiltration treatment effect.

(2) The utility model discloses, through the rubber circle that sets up in the junction of french drain and stone wall pipe, can avoid the junction seepage phenomenon to appear, realize the zonulae occludens of french drain, avoid the infiltration water to get into in the country rock structure, guarantee country rock structural strength.

Drawings

Fig. 1 is a schematic connection diagram of the blind ditch of the present invention;

FIG. 2 is a schematic structural view of the four-way joint of the present invention;

fig. 3 is a cross-sectional view taken at a in fig. 1 according to the present invention.

In the figure: 1. a four-way joint; 2. blind ditches; 11. piping; 12. a stone wall pipe; 13. a rubber ring.

Detailed Description

The present application will now be described in further detail with reference to the drawings, it should be noted that the following detailed description is given for illustrative purposes only and is not to be construed as limiting the scope of the present application, as those skilled in the art will be able to make numerous insubstantial modifications and adaptations to the present application based on the above disclosure.

Example 1

As shown in fig. 1 and fig. 2, a tunnel bottom seepage drainage structure comprises blind ditches 2 which are positioned below an inverted arch at the tunnel bottom and are in latticed transverse and longitudinal distribution, and adjacent blind ditches 2 are mutually connected through a four-way joint 1 to drain karst tunnel bottom water;

the four-way connector 1 comprises a pipe 11 which is distributed longitudinally, two ends of the pipe 11 are connected with blind ditches 2 which are distributed longitudinally, two stone wall pipes 12 which are distributed transversely are connected to the middle of the pipe 11, and one sides of the stone wall pipes 12 far away from the pipe 11 are connected with the blind ditches 2 which are distributed transversely, wherein the four-way connector 1 is an integrated four-way connector 1 accessory produced in an open mold.

As shown in figure 3, the outer surface of the stone wall pipe 12 is sleeved with a rubber ring 13 connected with the blind ditch 2, so that the water seepage phenomenon at the joint can be avoided, and the smooth discharge of the water body is ensured.

The blind ditches 2 are all assembled seepage and drainage blind ditches 2, and the outer diameter of a blind pipe used by the blind ditches 2 is 315mm; the outer diameter of the four-way joint 1 is 270mm or the inner diameter of the four-way joint is 315mm, so that the four-way joint can be tightly connected with the blind ditch 2.

It should be noted that: through in tunnel bottom invert below, set up indulge horizontal latticed french drain 2, and indulge and pass through cross joint 1 interconnect between the horizontal french drain 2, thereby the water at the bottom of the drainage tunnel, and the french drain 2 of here oozes drainage french drain 2 for the assembled, thereby guarantee can with french drain 2 zonulae occludens, rubber circle 13 that the junction of french drain 2 and stone wall pipe 12 set up can avoid the junction to appear the infiltration phenomenon, reach better drainage effect through laying the french drain 2 and the blind pipe of horizontal longitudinal distribution, reach and make pointed references and carry out infiltration treatment effect.

The above embodiments only represent several embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.

Claims

1. The utility model provides a seepage drainage structures at bottom of tunnel which characterized in that: the drainage device comprises blind ditches (2) which are positioned below an inverted arch at the bottom of the tunnel and are in latticed transverse and longitudinal distribution, wherein the adjacent blind ditches (2) are mutually connected through a four-way joint (1) to drain karst tunnel bottom water;

the four-way joint (1) comprises a longitudinally distributed piping (11), two ends of the piping (11) are connected with longitudinally distributed blind ditches (2), two transversely distributed stone wall pipes (12) are connected to the middle of the piping (11), and one sides, far away from the piping (11), of the stone wall pipes (12) are connected with the transversely distributed blind ditches (2).

2. The tunnel bottom seepage drainage structure of claim 1, wherein: and the outer surface of the stone wall pipe (12) is sleeved with a rubber ring (13) connected with the blind ditch (2).

3. The tunnel bottom seepage drainage structure of claim 1, wherein: the blind ditches (2) are all assembled seepage and drainage blind ditches (2), and the outer diameter of a blind pipe used by the blind ditches (2) is 315mm.

4. The tunnel bottom seepage drainage structure of claim 1, wherein: the outer diameter of the four-way joint (1) is 270mm or the inner diameter of the four-way joint is 315mm.