CN-224228719-U - Novel tunnel drainage structures

CN224228719UCN 224228719 UCN224228719 UCN 224228719UCN-224228719-U

Abstract

The utility model discloses a novel tunnel drainage structure which comprises a water collecting pit, a vertical drainage pipe, a horizontal drainage pipe and a pump room, wherein the water collecting pit is arranged at the lowest point of a tunnel, the vertical drainage pipe is vertically arranged at the bottom of the water collecting pit, the horizontal drainage pipe is arranged below a duct piece corresponding to the position of the tunnel, one end of the horizontal drainage pipe is communicated with the pump room, and the other end of the horizontal drainage pipe is connected with the vertical drainage pipe through an elbow component to form an L-shaped connection structure. This design simple structure, convenient construction. Compared with the traditional drainage structure, the drainage pipe installation position and elevation can be accurately controlled, the consistency of the design position of the drainage pipe installation position and the elevation can be ensured to be kept with the ballast bed embedded part system, the position conflict of the drainage pipe and the structure in the tunnel is avoided, and meanwhile, the drainage pipe has the effects of low construction cost, few segment damage surfaces, remarkable drainage efficiency, difficulty in water accumulation in the tunnel and the like.

Inventors

LUO CHANGJUN
MA KAI
HUANG HUI
WEI YU
WEI KUNHUA
JIANG ZHENYU
HE ZHIHUI
LI ZHIXIONG
TIAN LI
JIANG ZHANGBAO

Assignees

广州地铁集团有限公司
粤水电轨道交通建设有限公司

Dates

Publication Date: 20260512
Application Date: 20250625

Claims (6)

1. The utility model provides a novel tunnel drainage structure, its characterized in that, including sump pit, perpendicular drain pipe, horizontal drain pipe and pump house, the sump pit sets up in tunnel minimum department, perpendicular drain pipe set up in the bottom of sump pit, horizontal drain pipe sets up perpendicular drain pipe corresponds the below of the section of jurisdiction in tunnel position, the one end intercommunication of horizontal drain pipe the pump house, the other end pass through the elbow subassembly with perpendicular drain pipe connection forms "L" linking structure.
2. The novel tunnel drainage structure of claim 1, wherein the vertical drain pipe is equipped with a filtering device.
3. The novel tunnel drainage structure of claim 1, wherein an operating platform is arranged in the pump room.
4. The novel tunnel drainage structure of claim 1, wherein one end of the horizontal drain pipe is connected to the pump house through a flexible waterproof sleeve.
5. The novel tunnel drainage structure of claim 1, wherein the vertical drain pipe and the horizontal drain pipe are galvanized pipes.
6. The novel tunnel drainage structure of claim 1, wherein the horizontal drainage pipe is installed by splicing a plurality of sections of horizontal pipe sections.

Description

Novel tunnel drainage structures Technical Field The utility model relates to the technical field of tunnel drainage construction, in particular to a tunnel drainage structure. Background The drain pipeline of the water collecting pit at the pump house of the traditional tunnel connecting channel is generally a galvanized steel pipe and is arranged on the side surface of the water collecting pit of the tunnel. During construction, the side face of the segment at the lower part of the formed shield tunnel is drilled into a pump room of a connecting channel, a galvanized drain pipe is pre-installed in the drilled hole, the galvanized steel pipe is prolonged to a water collecting pit design position, and then the water collecting pit and the pump room drain channel of the connecting channel are formed by covering tunnel track bed concrete. The technology has the following defects that ① is limited by an intrados surface structure of a circular tunnel and a later concrete pipeline bed structure, the plane position and elevation of a drainage steel pipe are difficult to control, systematic deviation of the position and elevation exists in the installation of the drainage pipeline, the correction difficulty is high, the cost is high, the drainage effect after use is affected, the caliber of the ② drainage pipeline is large and is intersected with a duct piece Qu Humian, the tunnel duct piece is damaged in the drilling process, the waterproof performance and the durability of the tunnel structure are affected, the ③ drainage pipeline is arranged at a certain position upwards from the bottom of a water collecting pit, and water is easily accumulated at the bottom of the tunnel water collecting pit. Disclosure of utility model In order to solve the problems, the utility model provides a novel tunnel L-shaped drainage structure with strong applicability. The structure has the characteristics of low construction cost, less damage to the tunnel and the duct piece, strong construction period adaptability, obvious drainage efficiency, difficult water accumulation in the tunnel and the like, can accurately control the installation elevation of the drainage pipe, ensure the consistency of the design position with the track bed embedded part system, avoid the position conflict of the drainage pipe and the structure in the tunnel, and improve the drainage efficiency. The novel tunnel drainage structure comprises a water collecting pit, a vertical drainage pipe, a horizontal drainage pipe and a pump room, wherein the water collecting pit is arranged at the lowest point of a tunnel, the vertical drainage pipe is vertically arranged at the bottom of the water collecting pit, the horizontal drainage pipe is arranged below a duct piece corresponding to the tunnel position of the vertical drainage pipe, one end of the horizontal drainage pipe is communicated with the pump room, and the other end of the horizontal drainage pipe is connected with the vertical drainage pipe through an elbow component to form an L-shaped connection structure. Further, the vertical drain pipe is provided with a filtering device. Further, an operation platform is arranged in the pump room. Furthermore, one end of the horizontal drain pipe is communicated with the pump room through a flexible waterproof sleeve, so that construction is facilitated. Furthermore, the vertical drain pipe and the horizontal drain pipe adopt galvanized pipes, so that the weather resistance is good. Furthermore, the horizontal drain pipe adopts the installation of multistage horizontal pipe section concatenation, convenient construction. The utility model has the beneficial effects of simple design structure and convenient construction. Compared with the traditional drainage structure, the drainage pipe installation position and elevation can be accurately controlled, the consistency of the design position of the drainage pipe installation position and the elevation can be ensured to be kept with the ballast bed embedded part system, the position conflict of the drainage pipe and the structure in the tunnel is avoided, and meanwhile, the drainage pipe has the effects of low construction cost, few segment damage surfaces, remarkable drainage efficiency, difficulty in water accumulation in the tunnel and the like. Before pipeline installation, positioning and drilling are needed to be carried out at the positions of the pipe pieces at the bottoms of the pump house and the sump respectively, the pipeline installation is carried out by adopting galvanized steel pipes and combining the galvanized steel pipes with threaded connection through socket connection, grouting and plugging are carried out on gaps between the outer wall of the drain pipe and the pipe pieces, and waterproof sealing performance is ensured. A cylindrical filtering device is arranged at the top end of the vertical drain pipe, and is used for filtering sundries in accumulated water in the water collecting pit and