CN110685746A

CN110685746A - Automatic tunnel drainage system

Info

Publication number: CN110685746A
Application number: CN201911160156.5A
Authority: CN
Inventors: 范雲鹤
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-11-23
Filing date: 2019-11-23
Publication date: 2020-01-14

Abstract

The invention provides an automatic tunnel drainage system, which comprises a drill hole, a drainage pipe, an automatic device and the like, wherein a declined drill hole is formed by drilling at a position needing drainage of tunnel surrounding rock, the drainage pipe is placed in the drill hole, a water inlet of the drainage pipe is positioned at the bottom of the drill hole, a water outlet of the drainage pipe is connected with the automatic device, the automatic device is placed in a side ditch, the automatic device is fixed with the bottom of the side ditch, an oval diaphragm bin is arranged between a water storage chamber and an upper chamber, a diaphragm is arranged in the oval diaphragm bin, the diaphragm separates the water storage chamber from the upper chamber, a grid gap is arranged in the oval diaphragm bin, a rotating shaft is arranged in the lower chamber, one end of the rotating shaft is connected with a shell, the other end of the rotating shaft extends out of the shell to be connected with a paddle. The diaphragm of the invention can prevent silt separated out from the drain pipe from falling between the plug body and the shell, prevent the plug body from being blocked by the silt and avoid the automatic device from losing effect.

Description

Automatic tunnel drainage system

Technical Field

The invention belongs to the field of tunnel engineering, is suitable for drainage of mountain tunnels, and particularly relates to an automatic tunnel drainage system and method.

Background

The western mountainous areas in China are underdeveloped in traffic, railway and highway construction is influenced by complex geological and hydrological conditions, and the tunnel construction and operation process still faces a lot of engineering problems at present. The water leakage and the disease of the tunnel are a difficult problem which troubles the operation and the maintenance of the tunnel. The long-term leakage water of the tunnel can erode and destroy the tunnel lining, the leakage water can soften the surrounding rock of the tunnel, the strength of the surrounding rock is reduced, and the surrounding rock is damaged unstably. The tunnel seepage water drips on the road surface to cause water accumulation on the road surface or ice, and the traffic operation is influenced. The existing drainage measures have large damage to the integrity of the lining, small drainage range, poor long-term effect and high maintenance cost.

In recent years, tunnel siphon drainage technology has been proposed, for example, chinese patent publication No. 102635402a, which provides a declination drilling siphon drainage method for water seepage disposal of tunnel walls, which has the advantages of convenient arrangement of drainage holes, strong water collection capacity, good drainage interception effect, and fast construction speed, however, in the construction using the tunnel siphon drainage method, the top of the siphon needs to maintain a certain vacuum degree, but because the gas dissolved in water is separated out under negative pressure, and the outside air permeates into the siphon, and the like, part of the siphon often causes the vacuum degree to be reduced because the air is accumulated in the pipe, and part of the siphon can be temporarily in a work stop state, if the siphon is in a flow stop state for a long time, the siphon drainage maintenance is difficult, and even the whole siphon drainage system is interrupted, and the siphon start becomes abnormally difficult. In addition, the tunnel siphon drainage technology generally uses a siphon with the diameter of less than 4mm, the diameter of the siphon is small, silt clogging is easy to occur, siphon interruption is caused, and restarting is difficult after the siphon interruption.

Disclosure of Invention

The invention provides an automatic tunnel drainage system and method aiming at the problem of difficulty in secondary starting of siphoning interruption in the existing tunnel siphoning drainage technology.

The technical scheme of the invention is as follows: an automatic tunnel drainage system comprises a drill hole, a siphon pipe and an automatic device, wherein a declined drill hole is formed by drilling at a position needing drainage of tunnel surrounding rocks, the siphon pipe is placed in the drill hole, a water inlet of the siphon pipe is positioned at the bottom of the drill hole, a water outlet of the siphon pipe is connected with the automatic device, the diameter of the siphon pipe is 4mm, the automatic device is placed in a side ditch, the automatic device is fixed with the bottom of the side ditch, the automatic device comprises a ball valve chamber A, a ball valve chamber B, a ball valve A, a ball valve B, a water outlet pipe A, a water outlet pipe B, a water outlet pipe C, a paddle, a rotating shaft, a rotating wheel, a connecting rod, a plug body, a shell, an upper chamber, a lower chamber, an oval diaphragm chamber, a diaphragm and a water storage chamber, the ball valve chamber A and the ball valve chamber B are connected with the water storage chamber, the ball valve A and the ball valve, outlet pipe B is connected with ball valve chamber B, outlet pipe C is connected with the bottom of cavity down, set up oval diaphragm storehouse between reservoir chamber and the last cavity, set up the diaphragm in the oval diaphragm storehouse, the diaphragm separates reservoir chamber and last cavity, oval diaphragm storehouse has the grid space, ball valve A, ball valve B's density is greater than water, the pivot is installed at cavity down, the pivot is type of calligraphy, the one end and the shell of pivot are connected, the other end of pivot stretches out the shell and is connected with the paddle, the runner setting is in the pivot, the connecting rod is connected between runner and cock body, last cavity and lower cavity separated by the cock body.

Furthermore, the automatic tunnel drainage system is provided with a plurality of automatic tunnel drainage systems along the surrounding rocks of the tunnel.

Furthermore, the vertical distance between the hole opening and the hole bottom of the drilling hole is more than 2m higher than the height of the water column corresponding to the local atmospheric pressure, and the diameter of the drilling hole is more than 75 mm.

Furthermore, a plurality of siphons are arranged, and a plurality of automatic devices are arranged.

Furthermore, the automatic device is made of corrosion-resistant materials.

Furthermore, the siphon adopts a PU pipe.

An automatic tunnel drainage method comprises the following steps:

(1) one end of a siphon is placed in the drill hole, the other end of the siphon is placed in the side ditch, water is reversely poured into the siphon, after gas in the siphon is discharged, the reverse water pouring is stopped, the other end of the siphon is connected with an automatic device, the automatic device is fixedly connected with the side ditch, and surrounding rock underground water flows through the siphon, a water outlet pipe A, a lower cavity and a water outlet pipe C and is discharged into the side ditch;

(2) after rainfall occurs, the water level line of the side ditch rises, the paddle is impacted by water flow to rotate, the rotating shaft and the plug body are driven to move, the plug body moves downwards, the upper chamber forms negative pressure, the diaphragm moves downwards, the pressure of the water storage chamber is reduced, the ball valve A moves upwards, the ball valve B moves downwards, gas in the siphon pipe is sucked into the water storage chamber, the plug body moves upwards, the pressure of the upper chamber is increased, the pressure of the water storage chamber is increased, the ball valve A moves downwards, the ball valve B moves upwards, the gas in the water storage chamber is discharged from the water outlet pipe B, air accumulated in the siphon pipe is continuously discharged, the vacuum degree of the siphon pipe is increased, the siphon effect is recovered, and the tunnel normally drains water;

(3) the side ditch water level rises and submerges the paddle, the plug stops moving, and the surrounding rock underground water flows through the siphon pipe, the water outlet pipe A, the lower cavity and the water outlet pipe C and is discharged into the side ditch;

(4) the rainfall reoccurs and the gutter waterline rises, repeating the above process.

The invention has the following advantages:

1. the invention utilizes the paddle to convert the water flow energy in the side ditch into the plug body movement kinetic energy, pumps away the air accumulated in the siphon pipe, increases the vacuum degree in the siphon pipe, provides power for siphon action, solves the problem of siphon interruption and provides guarantee for the self-recovery of siphon action.

2. The siphon is started by utilizing hydrodynamic force, external force is not needed, and manual operation is not needed.

3. The invention can synchronously increase the side ditch water level line along with the occurrence of rainfall, submerge the automatic device along with the increase of the side ditch water level, and stop working.

4. The diaphragm of the invention can prevent silt separated out from the siphon tube from falling between the plug body and the shell, so as to prevent the plug body from being blocked by the silt and avoid the automatic device from losing effect.

5. The invention can provide larger suction force by utilizing the pressure difference produced by water flow power, can frequently remove silt in the siphon pipe and prevent the siphon pipe from being blocked.

Drawings

FIG. 1 is an overall schematic view of the present invention;

FIG. 2 is a schematic view of the downward movement of the plug body of the robot of the present invention;

FIG. 3 is a schematic view of the upward movement of the plug body of the robot of the present invention;

FIG. 4 is a schematic illustration of the shutdown state of the present invention;

in the figure: the device comprises a tunnel 1, a drill hole 2, a siphon 3, a gutter 4, an automatic device 5, a ball valve chamber A51, a ball valve chamber B52, a ball valve A53, a ball valve B54, a water outlet pipe A55, a water outlet pipe B56, a water outlet pipe C57, a paddle 58, a rotating shaft 59, a rotating wheel 60, a connecting rod 61, a plug body 62, a shell 63, an upper chamber 64, a lower chamber 65, an oval diaphragm chamber 66, a diaphragm 67, a water storage chamber 68 and a gutter waterline 7.

Detailed Description

The invention will be further illustrated with reference to the following specific examples. It should be understood that the examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.

Example 1

As shown in figures 1-4, an automatic tunnel drainage system comprises a drill hole 2, a siphon pipe 3 and an automatic device 5, wherein a declined drill hole 2 is drilled at a position needing drainage in a tunnel 1, the siphon pipe 3 is placed in the drill hole 2, a water inlet of the siphon pipe 3 is positioned at the bottom of the drill hole 1, a water outlet of the siphon pipe 3 is connected with the automatic device 5, the diameter of the siphon pipe 3 is 4mm, the automatic device 5 is placed in a side ditch 4, the automatic device 5 is fixed with the bottom of the side ditch 4, the automatic device 5 comprises a ball valve chamber A51, a ball valve chamber B52, a ball valve A53, a ball valve B54, a water outlet pipe A55, a water outlet pipe B56, a water outlet pipe C57, a paddle 58, a rotating shaft 59, a rotating wheel 60, a connecting rod 61, a plug body 62, a shell 63, an upper chamber 64, an oval diaphragm chamber 65, an oval diaphragm chamber, The ball valve chamber B52 is connected with the water storage chamber 68, the ball valve A53 and the ball valve B54 are respectively arranged in the ball valve chamber A51 and the ball valve chamber B52, the siphon tube 3 is connected with the ball valve chamber A51, the water outlet tube A55 is connected between the siphon tube 3 and the lower chamber 64, the water outlet tube B56 is connected with the ball valve chamber B54, the water outlet tube C57 is connected with the bottom of the lower chamber 65, an oval diaphragm chamber 66 is arranged between the water storage chamber 68 and the upper chamber 64, a diaphragm 67 is arranged in the oval diaphragm chamber 66, the diaphragm 67 separates the water storage chamber 68 from the upper chamber 64, the oval diaphragm chamber 66 is provided with a grid gap, the density of the ball valve A and the ball valve B is larger than that of water, the rotating shaft 59 is arranged in the lower chamber 65, the rotating shaft 59 is in a concave shape, one end of the rotating shaft 59 is connected with the housing 63, the other end of the rotating shaft 59, the upper chamber 64 and the lower chamber 65 are separated by the plug body 62. The automatic tunnel drainage system may be provided in plurality. The vertical distance between the hole opening of the drill hole 2 and the hole bottom is more than 2m higher than the height of the water column corresponding to the local atmospheric pressure, and the diameter of the drill hole 2 is more than 75 mm. One or more siphon pipes 3 are arranged, and one or more automatic devices 5 are arranged. The robot 5 is made of a corrosion-resistant material. The siphon 3 is PU pipe or PA pipe.

An automatic tunnel drainage method comprises the following steps:

(1) one end of a siphon 3 is placed in the drill hole 2, the other end of the siphon 3 is placed in the side ditch 4, water is reversely poured into the siphon 3, after gas in the siphon 3 is discharged, the reverse water pouring is stopped, the other end of the siphon 3 is connected with a recovery device 5, the recovery device 5 is fixedly connected with the side ditch 4, and surrounding rock underground water flows through the siphon 3, a water outlet pipe A55, a lower cavity 64 and a water outlet pipe C57 and is discharged to the side ditch 4;

(2) after rainfall occurs, the gutter water level 7 rises, the paddle 58 is impacted by water flow to rotate, the rotating shaft 59 and the plug body 62 are driven to move, the plug body 62 moves downwards, the upper chamber 64 forms negative pressure, the diaphragm 67 moves downwards, the pressure of the water storage chamber 68 is reduced, the ball valve A53 moves upwards, the ball valve B54 moves downwards, gas in the siphon tube 3 is sucked into the water storage chamber 68, the plug body 62 moves upwards, the pressure of the upper chamber 64 is increased, the pressure of the water storage chamber 68 is increased, the ball valve A51 moves downwards, the ball valve B52 moves upwards, gas in the water storage chamber 68 is discharged from the water outlet pipe B56, air accumulated in the siphon tube 3 is continuously discharged, the vacuum degree of the siphon tube 3 is increased, the siphon action is recovered, and siphon drainage is normally performed in the tunnel;

(3) the side ditch water level 7 rises to submerge the paddle 58, the plug body 62 stops moving, and the surrounding rock underground water flows through the siphon 3, the water outlet pipe A55, the lower chamber 65 and the water outlet pipe C57 and is discharged to the side ditch 4;

(4) the rainfall again occurs and the gutter water line 7 rises, repeating the above process.

Claims

1. An automatic tunnel drainage system is characterized by comprising a drill hole 2, a siphon 3 and an automatic device 5, wherein a declined drill hole is drilled at a position needing to be drained on tunnel surrounding rock, the siphon is placed in the drill hole, a water inlet of the siphon is positioned at the bottom of the drill hole, a water outlet of the siphon is connected with the automatic device, the diameter of the siphon is 4mm, the automatic device is placed in a side ditch, the automatic device is fixed with the bottom of the side ditch, the automatic device comprises a ball valve chamber A, a ball valve chamber B, a ball valve A, a ball valve B, a water outlet pipe A, a water outlet pipe B, a water outlet pipe C, a paddle, a rotating shaft, a rotating wheel, a connecting rod, a plug body, a shell, an upper chamber, a lower chamber, an oval diaphragm bin, a diaphragm and a water storage chamber, the ball valve chamber A and the ball valve chamber B are connected with the water storage chamber, the ball valve A and the, outlet pipe A connects between siphon and lower cavity, outlet pipe B is connected with ball valve chamber B, outlet pipe C is connected with the bottom of cavity down, set up oval diaphragm storehouse between reservoir chamber and the last cavity, set up the diaphragm in the oval diaphragm storehouse, the diaphragm separates reservoir chamber and last cavity, oval diaphragm storehouse has the grid space, ball valve A, ball valve B's density is greater than water, the pivot is installed cavity down, the pivot is the type of calligraphy, the one end and the shell of pivot are connected, the other end of pivot stretches out the shell and is connected with the paddle, the runner sets up in the pivot, the connecting rod is connected between runner and cock body, last cavity and lower cavity separated by the cock body.

2. The automatic tunnel drainage system of claim 1, wherein the automatic tunnel drainage system is provided in plurality along the tunnel surrounding rocks.

3. The automatic tunnel drainage system of claim 1, wherein the vertical distance between the opening of the drilled hole and the bottom of the drilled hole is more than 2m higher than the height of the water column corresponding to the local atmospheric pressure, and the diameter of the drilled hole is more than 75 mm.

4. The automatic tunnel drainage system of claim 1, wherein there are a plurality of siphon pipes and a plurality of automatic devices.

5. The automatic tunnel drainage system of claim 1, wherein the robot is made of a corrosion resistant material.

6. The automatic tunnel drainage system of claim 1, wherein the siphon is PU tube.