Water drainage system and method based on downward drainage borehole

A technology of drainage drilling and drainage system, applied in drainage, gas discharge, mining equipment, etc., can solve problems such as affecting continuous gas drainage

Active Publication Date: 2011-06-22
HUAINAN MINING IND GRP
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  • Abstract
  • Description
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Problems solved by technology

[0003] Embodiments of the present invention provide a drainage system and method based on downward drainage boreholes to solve the technical defect in the prior art that the continuous gas extraction is affected due to water accumulation in the downward drainage boreholes

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  • Water drainage system and method based on downward drainage borehole
  • Water drainage system and method based on downward drainage borehole
  • Water drainage system and method based on downward drainage borehole

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Embodiment Construction

[0017] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0018] figure 1 It is a flow chart of the drainage system based on the downward drainage borehole of the present invention. Such as figure 1 As shown, the drainage system based on down-drainage drilling in the embodiment of this city includes a pipeline subsystem 11, a gas-water separation device 12 and a monitoring device 13, wherein, in combin...

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Abstract

The invention provides a water drainage system and method based on a downward extraction borehole, wherein the method comprises the following steps: tripping a protection casing and a breather pipe in the downward extraction borehole, wherein the breather pipe is communicated with the protection casing; extracting gas in the downward extraction borehole through the protection casing, and monitoring whether the negative pressure in the downward extraction borehole reaches the preset value in a preset period; when the negative pressure reaches the preset value in the preset period, opening the breather pipe and employing the pressure difference of the negative pressure and the outside atmospheric pressure to drain the logged water in the downward extraction borehole through the protection casing. The drainage system and method based on downward extraction borehole provided by the invention solve the technical defect in prior art that the logged water in the downward extraction borehole influences continuous gas extracting.

Description

technical field [0001] The embodiments of the present invention relate to the field of coal engineering, in particular to a drainage system and method based on downward drainage drilling. Background technique [0002] In the current field of coal engineering, when "outburst prevention treatment" is performed on the exposed coal seam, a number of downward drainage boreholes can be set to continuously extract gas to prevent the danger of "coal and gas outburst". However, while the gas is being extracted, groundwater will continue to seep out of the downward drainage boreholes and form stagnant water. With the increase of the stagnant water, the purpose of continuous gas extraction will not be achieved, which in turn will bring harm to coal construction. The danger of "coal and gas outburst". Contents of the invention [0003] Embodiments of the present invention provide a drainage system and method based on downward drainage boreholes to solve the technical defect in the pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F7/00E21F16/00
Inventor 袁亮方良才曹海山李平孙月庚陈军夏仕柏曾春贵童文文
Owner HUAINAN MINING IND GRP
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