CN108361065B

CN108361065B - Tunnel inverted arch filling drainage structure

Info

Publication number: CN108361065B
Application number: CN201810427252.0A
Authority: CN
Inventors: 岳岭; 赵勇; 马福东; 李鹏飞; 吕刚; 刘建友; 李汶京; 曹永刚; 刘方; 张宇宁; 张斌; 王磊; 凌云鹏
Original assignee: China Railway Engineering Consulting Group Co Ltd
Current assignee: China Railway Engineering Consulting Group Co Ltd
Priority date: 2018-05-07
Filing date: 2018-05-07
Publication date: 2024-01-19
Anticipated expiration: 2038-05-07
Also published as: CN108361065A

Abstract

The invention relates to a tunnel inverted arch filling drainage structure which comprises a longitudinal convex shell type drainage plate, a transverse convex shell type drainage plate and a central drainage ditch, wherein the longitudinal convex shell type drainage plate, the transverse convex shell type drainage plate and the central drainage ditch are arranged below an inverted arch filling surface, the longitudinal convex shell type drainage plate is arranged on the outer sides of left and right line lines and the central line position of a tunnel respectively, the transverse convex shell type drainage plate is arranged at each annular construction joint, the longitudinal convex shell type drainage plate and the transverse convex shell type drainage plate are positioned at the same level, and the central drainage ditch is arranged on the inverted arch below the longitudinal convex shell type drainage plate at the central line position of the tunnel. According to the invention, the longitudinal convex shell type drainage plate and the transverse convex shell type drainage plate are arranged in the inverted arch filling, so that the ground water leaked from the construction joint is led into the central drainage ditch, the inverted arch filling is ensured to be dry, and the probability of diseases such as slurry-turning mud-like tunnel bottom, tunnel bottom bulge and the like can be effectively reduced.

Description

Tunnel inverted arch filling drainage structure

Technical Field

The invention relates to the field of tunnel engineering, in particular to a tunnel inverted arch filling drainage structure.

Background

A large amount of tunnel bottom diseases of the railway tunnel in China comprise slurry-casting mud, tunnel bottom bulge, tunnel bottom frost heaving and the like, and one of the pathogenic reasons is tunnel bottom ponding caused by the failure of a tunnel water-proof and drainage structure.

In recent years, the drainage scheme of the bottom of the railway tunnel with the inverted arch is continuously optimized and improved, and mainly comprises the following steps:

1. side trenches are arranged on two sides of the tunnel only. In the scheme, the side ditch receives the seepage collected by the circumferential blind pipe and the longitudinal blind pipe of the tunnel and discharges the seepage to the outside of the tunnel. According to the scheme, only the side ditch is used for draining water to the outside of the tunnel, the drainage speed is limited, if the seepage amount of the upper structure of the tunnel is large, the water can possibly spread to the inside of the tunnel, and accumulated water at the bottom of the inverted arch of the tunnel cannot be drained. The section of the tunnels of the Taizhong silver railway and the Shuihuang railway adopts the scheme.

2. Side ditches are arranged on two sides of the tunnel, a drain pipe is arranged in the center of the tunnel, and the center drain pipe is arranged in the inverted arch filled concrete. In this scheme, the lateral ditch accepts the infiltration that tunnel hoop blind pipe and vertical blind pipe assembled and discharges partly outside the tunnel, links to each other with central drain pipe through PVC aqueduct simultaneously, and it is outside to draw the central drain pipe to arrange the tunnel with water. According to the scheme, water seepage of the tunnel upper structure can be smoothly discharged, but accumulated water at the bottom of the tunnel inverted arch cannot be drained. The tunnel bottom of the part of the mountain southwest railway channel, mongolian railway channel and Huazhong railway channel adopts the scheme.

3. Side ditches are arranged on two sides of the tunnel, a drain pipe is arranged in the center of the tunnel, and the center drain pipe is arranged at the bottom of the inverted arch structure. In this scheme, the lateral ditch accepts the infiltration that tunnel ring was to blind pipe and vertical blind pipe were assembled and is discharged outside the tunnel with a part, and the lateral ditch passes through the PVC water pipe and links to each other with central drain pipe inspection shaft, can draw the inspection shaft with water and discharge outside the tunnel through central drain pipe, lay the blind pipe that permeates water and be connected to central drain pipe inspection shaft in the inverted arch bottom simultaneously, can collect inverted arch bottom ponding and annular and vertical blind pipe part ponding to the inspection shaft and discharge through central drain pipe. According to the scheme, accumulated water at the bottom of the tunnel inverted arch can be smoothly drained, but in a section with a good surrounding rock level, a foundation trench of a central drain pipe at the bottom of the tunnel is difficult to excavate, and construction difficulty is increased. Such schemes are adopted by Zhangkou to Huand Haoye railways, jilin to 29682, spring railway engineering, wu Jiuke dedicated Rui Chang to Jiujiang railway section tunnels.

Disclosure of Invention

Aiming at the technical problems in the prior art, the invention provides a tunnel inverted arch filling drainage structure, which is used for solving the problem of accumulated water in a tunnel inverted arch and effectively reducing the occurrence probability of tunnel bottom diseases.

In order to achieve the above purpose, the invention adopts the following technical scheme: the utility model provides a tunnel inverted arch fills drainage structures, is including setting up vertical protruding shell type drain bar, horizontal protruding shell type drain bar and the central escape canal below the inverted arch filling face, vertical protruding shell type drain bar is three in total, sets up respectively in left and right line outside and tunnel central line position, horizontal protruding shell type drain bar sets up in every hoop construction seam department, vertical protruding shell type drain bar is located same level with horizontal protruding shell type drain bar, the central escape canal sets up on the inverted arch under the vertical protruding shell type drain bar of tunnel central line position.

Further, the longitudinal convex shell type drain plate and the transverse convex shell type drain plate are positioned at a position 0.3-0.6m below the inverted arch filling surface.

Further, the widths of the longitudinal convex shell type drain plates and the transverse convex shell type drain plates are 30-100 cm.

Further, drain holes are formed in two sides of the inspection well and used for introducing water collected by the longitudinal convex shell type drain plates and the transverse convex shell type drain plates into the central drain.

Compared with the prior art, the invention has the following effects: through setting up vertical protruding shell formula drain bar and horizontal protruding shell formula drain bar in the inverted arch is filled inside, the groundwater that leaks the construction joint is imported central escape canal, ensures inverted arch filling dryness, can effectively reduce the probability that diseases such as mud-turning mud, tunnel end uplift appear at the tunnel end. In addition, in severe cold areas, freezing injury such as freezing at the tunnel bottom, frost heaving at the tunnel bottom and the like can be effectively prevented.

Drawings

FIG. 1 is a schematic view of a tunnel inverted arch filling and draining structure according to an embodiment of the present invention;

fig. 2 is a schematic plan view of a tunnel inverted arch filling drainage structure according to an embodiment of the present invention.

In the figure: 1. a longitudinal convex shell type drainage plate; 2. a transverse convex shell type drainage plate; 3. a central drain; 4. inverted arch; 5. inverted arch filling surface; 6. a circumferential construction joint; 7. an inspection well; 8. and a water discharge hole.

Detailed Description

Specific embodiments of the present invention will be described in detail below with reference to the drawings, but are not limited thereto.

Referring to fig. 1-2, a tunnel inverted arch filling drainage structure comprises a longitudinal convex shell type drainage plate 1, a transverse convex shell type drainage plate 2 and a central drainage ditch 3, wherein the longitudinal convex shell type drainage plate 1 is arranged below an inverted arch filling surface 5, the longitudinal convex shell type drainage plate 1 is respectively arranged at the outer sides of left and right lines and the central line position of a tunnel, the transverse convex shell type drainage plate 2 is arranged at the position of each annular construction joint 6, and the central drainage ditch 3 is arranged on the lower inverted arch 4 of the longitudinal convex shell type drainage plate 1 at the central line position of the tunnel. Drainage holes 8 are arranged on two sides of the inspection well 7 and are used for introducing water collected by the longitudinal convex hull type drainage plates 1 and the transverse convex hull type drainage plates 2 into the central drainage ditch 3. The longitudinal convex shell type drain board 1 and the transverse convex shell type drain board 2 are positioned at the same level and are positioned at 0.3-0.6m below the inverted arch filling surface 5. The width of the longitudinal convex shell type drain board 1 and the width of the transverse convex shell type drain board 2 are 30 cm to 100cm.

The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention, the scope of which is defined by the claims. Various modifications and equivalent arrangements of this invention will occur to those skilled in the art, and are intended to be within the spirit and scope of the invention.

Claims

1. The utility model provides a drainage structure is filled to tunnel inverted arch, its characterized in that, including setting up vertical protruding shell formula drain bar (1), horizontal protruding shell formula drain bar (2) and central escape canal (3) below inverted arch filling face (5), vertical protruding shell formula drain bar (1) total three, set up respectively in left and right line outside and tunnel central line position, horizontal protruding shell formula drain bar (2) set up in every hoop construction joint (6) department, vertical protruding shell formula drain bar (1) are located same level with horizontal protruding shell formula drain bar (2), central escape canal (3) set up under the vertical protruding shell formula drain bar (1) of tunnel central line position under inverted arch (4).

2. A tunnel inverted arch filling drain according to claim 1, wherein the longitudinal convex hull drain pan (1) and the transverse convex hull drain pan (2) are located 0.3-0.6m below the inverted arch filling surface (5).

3. A tunnel inverted arch filling drain according to claim 1, wherein the width of the longitudinal convex hull drain pan (1) and the transverse convex hull drain pan (2) is 30-100 cm.

4. A tunnel inverted arch filling drainage structure according to any of claims 1-3, characterized in that the inspection shaft (7) is provided with drainage holes (8) on both sides for introducing water collected by the longitudinal and transverse convex shell drainage plates (1, 2) into the central drainage channel (3).