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Underground Harmful Gas Exhaust Device

A discharge device and harmful gas technology, applied in soil protection, construction, infrastructure engineering, etc., can solve the problems of ineffective discharge of gas, low efficiency of discharge operation, inevitable impact, etc., achieve high promotion and application value, reduce sealing The effect of covering and reducing adverse effects

Active Publication Date: 2015-11-11
CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In areas with abundant groundwater, the exhaust gas of the above methods will inevitably be affected by groundwater.
When the gas pressure in the gas-bearing formation is low, the gas will not be effectively vented and the venting operation will be inefficient

Method used

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  • Underground Harmful Gas Exhaust Device
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Examples

Experimental program
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Embodiment Construction

[0014] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0015] Such as figure 1 The shown underground harmful gas discharge device includes an air filter pipe 1 with a vent hole 2 on the pipe wall, and the air filter pipe 1 goes deep into the gas-bearing formation under the natural ground 10, and is also provided with a drain pipe 3, which is sheathed In the air filter pipe 1 , the air filter pipe 1 is provided with a connection through hole 12 , and one end of the drain pipe 3 on the natural ground 10 passes through the connection through hole 12 to connect with the water pump 8 outside the air filter pipe 1 . The part of the outer wall of the air filter pipe 1 located in the air-bearing layer is provided with a breathable packing material layer 5, and the part of the outer wall of the air filter pipe 1 located between the natural ground 10 and the underground water level 11 is provided w...

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Abstract

The invention discloses an underground harmful gas discharger which comprises a gas-filtering pipe with exhaust holes on the wall. The gas-filtering pipe deepens into gas-bearing stratum below natural surface. The underground harmful gas discharge is characterized by further being provided with a drain pipe which is nested in the gas-filtering pipe. The gas-filtering pipe is provided with a connection through hole. One end of the drain pipe, above the natural surface, penetrates through the connection through hole to be connected with a water pump outside the gas-filtering pipe. The effect of underwater in covering underground harmful gases can be lowered by the underground harmful gas discharger, exhausting efficiency can be improved evidently, and the gases are discharged maximally. Controlled discharge of the underground harmful gases can be achieved with a valve, adverse effect of exhaust on surroundings is reduced, and the underground harmful gas discharger is highly worthy of popularization and application.

Description

technical field [0001] The invention relates to the technical field of civil engineering, in particular to an underground harmful gas discharge device. Background technique [0002] With the extensive construction of various underground projects, various strata conditions will inevitably be encountered during the implementation of underground projects. For strata rich in organic matter, harmful gases under pressure will be produced under certain geological conditions. There are flammable, explosive or toxic characteristics that are not conducive to the safe implementation of the project. Therefore, in order to reduce the risk of underground engineering implementation, the exhaust operation of the gas-bearing formation in advance is used as a main method to reduce the formation as much as possible. The content of harmful gases in the middle, so that the content level reaches the standard of safe operation, thereby reducing the risk of excavation or other operations in the for...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D3/10
Inventor 谢俊孙文昊殷怀连石太伟乐师军郭磊
Owner CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP
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