CN217549252U

CN217549252U - Tunnel construction drainage system

Info

Publication number: CN217549252U
Application number: CN202221665913.1U
Authority: CN
Inventors: 李雷; 赵伟伟; 赵祖印; 金文天; 易育智; 刘彩涛
Original assignee: Sinohydro Bureau 9 Co Ltd
Current assignee: Sinohydro Bureau 9 Co Ltd
Priority date: 2022-06-30
Filing date: 2022-06-30
Publication date: 2022-10-11
Anticipated expiration: 2032-06-30

Abstract

The utility model discloses a tunnel construction drainage system, including tunnel foundation, escape canal, drain pipe, buffer tank, water pump, the escape canal sets up on the tunnel foundation, and the escape canal distributes along the long direction of tunnel foundation, is equipped with a plurality of water grates on the escape canal, escape canal ground is equipped with the slope, the low point intercommunication on drain pipe one end and slope, the drain pipe other end and buffer tank lower part intercommunication, the water pump passes through the drinking-water pipe and is connected with buffer tank upper portion, be equipped with fixed filter screen A and activity filter screen in the buffer tank. The utility model discloses an use the velocity of flow of the rivers in the buffer tank messenger pipeline to slow down the back, make the gravel and sand of aquatic subside to the buffer tank bottom, simultaneously through the gravel and sand of filter screen secondary filtration aquatic, further reduce the impurity of aquatic, avoid blockking up the water pump, gush water when more in the underground, rivers can break away movable filter screen, increase latus rectum, the quick drainage of being convenient for, only need during the clearance to the inside clearance of buffer tank can, improved abluent efficiency.

Description

Tunnel construction drainage system

Technical Field

The utility model belongs to tunnel construction field especially relates to a tunnel construction drainage system.

Background

In projects such as highway, railway, water conservancy, often need dig the tunnel in the massif, in the tunnel work progress, in order to prevent that groundwater from gushing out and causing the surface ponding, influence construction safety's problem, people developed and designed some tunnel drainage device, chinese patent as application number 20212203266.0 discloses a tunnel drainage system for tunnel construction, including the tunnel ground with dig escape canal and the sump pit of establishing on the tunnel ground, the drainage end of escape canal and one side intercommunication of sump pit, the upper end of escape canal and sump pit all is provided with the water grate, dig the sedimentation tank in the escape canal bottom that is close to sump pit one side, be provided with the open slag storage tank in the sedimentation tank, the bottom in the sump pit in a row is provided with many spacing pole settings, the interior space separation of sump pit becomes filter chamber and water purification chamber by the line of many spacing pole settings. This design uses the sedimentation tank, the filter cell, erect three devices of net and come to filter gushing water, in actual scene, underground gushing water contains impurity such as sand and soil in area, the convergence is at the sedimentation tank, the filter cell, erect net department, need clear up above-mentioned three positions respectively when the clearance, work load is big, positions such as guide plate simultaneously, can block the clearance of filter chamber equipotential, the clearance degree of difficulty has been increased, consequently, need a tunnel construction drainage system, filterable impurity in the clearance pipeline that can be convenient, the degree of difficulty of reduction workman's clearance.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a tunnel construction drainage system can solve the big problem of the prior art clearance degree of difficulty.

The utility model discloses a following technical scheme can realize.

The utility model provides a pair of tunnel construction drainage system, including tunnel ground, escape canal, drain pipe, buffer tank, water pump, the escape canal sets up on the tunnel ground, and the escape canal distributes along the long direction of tunnel ground, is equipped with a plurality of water grates on the escape canal, escape canal ground is equipped with the slope, the drain pipe one end and the low point on slope intercommunication, the drain pipe other end and buffer tank lower part intercommunication, the water pump passes through the drinking-water pipe and is connected with buffer tank upper portion, be equipped with fixed filter screen A and activity filter screen in the buffer tank, fixed filter screen A is the loudspeaker form, and fixed filter screen A periphery and buffer tank inner wall welding, activity filter screen pass through the slide bar and install in the buffer tank, and activity filter screen lower part is leaned on at fixed filter screen A terminal surface.

The horizontal height of the buffer tank is 1m to 1.5m lower than that of the drainage ditch.

The bottom of the buffer tank is inclined, a sludge discharge port is arranged at the low point of the bottom of the buffer tank, and a flushing pipe is arranged at the high point of the bottom of the buffer tank.

The movable filter screen is connected with the sliding rod in a sliding mode, the lower portion of the sliding rod is welded to the bottom of the buffer tank, the upper portion of the sliding rod is connected with the inner wall of the buffer tank through a connecting rod, and a gap ranging from 10cm to 15cm is reserved between the upper portion of the movable filter screen and the connecting rod.

And a baffle is arranged on the sludge discharge port and is connected with the sludge discharge port through a nut and a sealing ring.

The upper end surface of the water grate is flush with the upper end surface of the tunnel foundation.

And a fixed filter screen B is arranged at the joint of the water pumping pipe and the buffer tank.

The beneficial effects of the utility model reside in that: after the velocity of flow in making the pipeline slows down through using the buffer tank, make the gravel and sand of aquatic subside to the buffer tank bottom, through the gravel and sand of filter screen secondary filtration aquatic simultaneously, further reduce the impurity of aquatic, avoid blockking up the water pump, gush water when more in the underground, rivers can wash away movable filter screen, increase latus rectum, the quick drainage of being convenient for, only need during the clearance to the inside clearance of buffer tank can, improved abluent efficiency.

Drawings

FIG. 1 is a schematic view of the present invention;

in the figure: 1-tunnel foundation, 2-drainage ditch, 3-drainage pipe, 4-buffer tank, 5-water pump, 6-water grate, 7-water pumping pipe, 8-fixed filter screen A, 9-movable filter screen, 10-sliding rod, 11-sludge discharge port, 12-flushing pipe, 13-baffle, 14-fixed filter screen B.

Detailed Description

The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.

As shown in fig. 1, a tunnel construction drainage system, including tunnel ground 1, escape canal 2, drain pipe 3, buffer tank 4, water pump 5, escape canal 2 sets up on tunnel ground 1, and 2 long direction along tunnel ground 1 of escape canal distribute, are equipped with a plurality of water combs 6 on the escape canal 2, 2 ground in escape canal are equipped with the slope, the low point intercommunication on 3 one ends of drain pipe and slope, the 3 other ends of drain pipe and 4 lower parts of buffer tank intercommunication, water pump 5 is connected with 4 upper portions of buffer tank through drinking-water pipe 7, be equipped with fixed filter screen A8 and movable filter screen 9 in the buffer tank 4, fixed filter screen A8 is the loudspeaker form, and fixed filter screen A8 periphery and 4 inner wall welding of buffer tank, movable filter screen 9 pass through slide bar 10 and install in buffer tank 4, and movable filter screen 9 lower part leans on fixed filter screen A8 terminal surface.

Underground among the tunnel work progress gushes water and can flow into escape canal 2, water in escape canal 2 can flow into buffer tank 4 along drain pipe 3, because buffer tank 4's internal diameter is great, groundwater stays behind this position, the velocity of flow reduces, gravel and sand in the aquatic can subside in buffer tank 4 bottom under the action of gravity this moment, simultaneously under water pump 5's use, 4 upper portions of buffer tank are flowed to from bottom to top to the rivers, filter through fixed filter screen A8 and the gravel and sand in the movable filter screen 9 rivers when flowing, prevent that water pump 5 from being blockked up. When a large amount of gushes water in the tunnel, 5 full power operations of water pump, the velocity of flow in the buffer tank 4 improves this moment, can up push open movable filter screen 9, and the clearance of movable filter screen 9 and fixed filter screen A8 is passed through to the not partial rivers that can follow this moment to reduce the flow resistance of rivers, improve the speed of drainage, reach the purpose of quick drainage when emergency, with the safety of guaranteeing constructor. When the water pump 5 runs at full power, the water flow speed in the pipeline is high, the sand in the water cannot block the water pump 5, when the system runs, the sand in the water is mainly gathered in the buffer tank 4 and can be quickly washed in the buffer tank 4 through the washing pipe 12, the working time of a worker for washing the drainage system is reduced, and the working efficiency is improved.

The level of buffer tank 4 is 1m to 1.5m lower than the level of escape canal 2 to in can flow into buffer tank 4 under the effect of gravity in the escape canal 2, avoid 1 ponding of tunnel foundation.

The bottom of the buffer tank 4 is inclined, a sludge discharge port 11 is arranged at a low point at the bottom of the buffer tank 4, a flushing pipe 12 is arranged at a high point at the bottom of the buffer tank 4, sandy soil in water flow falls to the bottom of the buffer tank 4 when settling, when the buffer tank 4 needs to be cleaned, the baffle 13 is opened, the flushing pipe 12 is opened simultaneously, sludge at the bottom of the buffer tank 4 is flushed down from the bottom of the buffer tank 4, cleaning can be completed, and work is provided.

Activity filter screen 9 and slide bar 10 sliding connection, slide bar 10 lower part and the welding of 4 bottoms of buffer tank, and connecting rod and 4 inner wall connections of buffer tank are passed through on slide bar 10 upper portion, and there is 10cm to 15 cm's clearance on 9 upper portions of activity filter screen and the connecting rod, and activity filter screen 9 can slide on slide bar 10, when needs emergency drainage, can lift up under the rivers effect to reduce the velocity of flow of rivers, improve displacement.

Be equipped with baffle 13 on the mud discharging port 11, baffle 13 passes through the nut and the sealing washer is connected with mud discharging port 11, and after removing baffle 13, alright with handling the mud in buffer tank 4, improve the efficiency of clearance.

The upper end surface of the water grate 6 is flush with the upper end surface of the tunnel foundation 1, so that personnel can walk conveniently.

The junction of the water pumping pipe 7 and the buffer tank 4 is provided with a fixed filter screen B14, and water flow is further filtered through the fixed filter screen B14.

Claims

1. The utility model provides a tunnel construction drainage system which characterized in that: the tunnel foundation comprises a tunnel foundation (1), drainage ditches (2), drainage pipes (3), a buffer tank (4) and a water pump (5), wherein the drainage ditches (2) are arranged on the tunnel foundation (1), the drainage ditches (2) are distributed along the length direction of the tunnel foundation (1), and a plurality of water grates (6) are arranged on the drainage ditches (2); the ground of the drainage ditch (2) is provided with a slope, one end of the drainage pipe (3) is communicated with the low point of the slope, and the other end of the drainage pipe (3) is communicated with the lower part of the buffer tank (4); the water pump (5) is connected with the upper part of the buffer tank (4) through a water pumping pipe (7); be equipped with fixed filter screen A (8) and activity filter screen (9) in buffer tank (4), fixed filter screen A (8) are the loudspeaker form, and fixed filter screen A (8) periphery and buffer tank (4) inner wall welding, and install in buffer tank (4) through slide bar (10) activity filter screen (9), and activity filter screen (9) lower part is leaned on at fixed filter screen A (8) terminal surface.

2. The tunnel construction drainage system of claim 1, wherein: the horizontal height of the buffer tank (4) is 1m to 1.5m lower than that of the drainage ditch (2).

3. The tunnel construction drainage system of claim 1, wherein: the bottom of the buffer tank (4) is inclined, a sludge discharge port (11) is arranged at the low point of the bottom of the buffer tank (4), and a flushing pipe (12) is arranged at the high point of the bottom of the buffer tank (4).

4. The tunnel construction drainage system of claim 1, wherein: the movable filter screen (9) is connected with the sliding rod (10) in a sliding mode, the lower portion of the sliding rod (10) is welded to the bottom of the buffer tank (4), the upper portion of the sliding rod (10) is connected with the inner wall of the buffer tank (4) through the connecting rod, and the upper portion of the movable filter screen (9) is in a clearance of 10cm to 15cm with the connecting rod.

5. The drainage system for tunnel construction according to claim 3, wherein: and a baffle (13) is arranged on the sludge discharge port (11), and the baffle (13) is connected with the sludge discharge port (11) through a nut and a sealing ring.

6. The tunnel construction drainage system of claim 1, wherein: the upper end surface of the water grate (6) is flush with the upper end surface of the tunnel foundation (1).

7. The tunnel construction drainage system of claim 1, wherein: and a fixed filter screen B (14) is arranged at the joint of the water pumping pipe (7) and the buffer tank (4).