Water Pressure Controllable Tunnel Drainage System and Its Water Pressure Control Device
A technology for controlling device and tunnel drainage, applied in drainage, safety devices, mining equipment, etc., can solve problems such as excessive discharge of groundwater and damage to the natural environment, and achieve the effect of avoiding excessive discharge, ensuring tunnel safety, and preventing damage
Active Publication Date: 2016-01-20
CHINA RAILWAY ENG CONSULTING GRP CO LTD +1
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Problems solved by technology
[0004] However, in practical application, the inventors of the present invention have found that the existing tunnel drainage system may cause excessive discharge of groundwater near the tunnel and damage the local natural environment
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[0035] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below with reference to the accompanying drawings and preferred embodiments. However, it should be noted that many of the details listed in the specification are only for readers to have a thorough understanding of one or more aspects of the present invention, and these aspects of the present invention can be implemented even without these specific details.
[0036] The inventor of the present invention considers that if the water level of the groundwater is not lower than the set water level when the groundwater is discharged, excessive discharge of the groundwater can be avoided, and damage to the local natural environment can also be prevented.
[0037] Therefore, in the technical solution of the present invention, the depth of the water pressure control device in the tunnel can be determined before the tunnel is bu...
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The invention discloses a tunnel drainage system with a controllable water pressure and a water pressure controlling device of the tunnel drainage system. The water pressure controlling device comprises a water inlet tube, a tubular guiding portion and a one-way valve. The water inlet tube penetrates through the side wall of a tunnel, a water outlet of the water inlet tube is located in the tunnel and faces upwards perpendicularly relative to the horizontal plane, and a water inlet of the water inlet tube is communicated with an underground water source located outside the tunnel. The water outlet end of the tubular guiding portion is open, and the water inlet end of the tubular guiding portion is closed. The water outlet of the water inlet tube penetrates through the end face of the water inlet end of the guiding portion and extends into the guiding portion. The one-way valve comprises a cover plate and a counter weight portion arranged on the lower surface of the cover plate. The cover plate is located in the guiding portion, and the water outlet of the water inlet tube is covered with the cover plate. The counter weight portion is hung in the water inlet tube. The water outlet of the water inlet tube is lower than a threshold water level of the underwater source. The gravity value of the one-way valve is not smaller than a first pressure value. The first pressure value is equal to the value of the water pressure generated due to the height difference between the water outlet of the water inlet tube and the threshold water level. According to the technical scheme, the water pressure control device controls the tunnel drainage system to conduct drainage or stop drainage through water pressure, so that excessive drainage of underwater is avoided.
Description
technical field [0001] The invention relates to the field of tunnel engineering, in particular to a water pressure controllable tunnel drainage system and a water pressure control device thereof. Background technique [0002] With the development of infrastructure in our country, a large number of tunnels have been built and put into use. In order to prevent the tunnel support structure from being deformed and damaged by the pressure of the groundwater outside the tunnel, it is usually necessary to drain the groundwater outside the tunnel. [0003] At present, a tunnel drainage system is usually installed in the tunnel to drain the groundwater outside the tunnel. The cross-sectional schematic diagram of the tunnel drainage system in the tunnel cross section is shown in figure 1 As shown, it includes: a plurality of tunnel drainage pipes 101 running through the side wall of the tunnel, and a tunnel drainage ditch 102 in the tunnel; the water inlet of the tunnel drainage pipe...
Claims
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IPC IPC(8): E21F16/02
Inventor 刘建友吕刚陈学峰石山谭富圣王杨彭斌朱敏文罕邢如飞于晨昀张恒
Owner CHINA RAILWAY ENG CONSULTING GRP CO LTD