Gas extraction borehole sealing detection device and detection method

A technology for leak detection and gas extraction, which is applied in liquid tightness measurement using liquid/vacuum degree, and by measuring the increase and deceleration rate of fluid, can solve the problem of the difficulty of completely guaranteeing the quality of sealing holes, the difficulty of judging the effect of sealing holes, The hole sealing effect is not ideal, etc., to achieve the effect of convenient learning and operation, small space occupation, and few buttons

Active Publication Date: 2017-08-29
CHINA UNIV OF MINING & TECH
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Problems solved by technology

However, each method is difficult to fully guarantee the quality of the sealing
[0003] According to the existing technology, it is difficult to judge the sealing effect after sealing; if

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  • Gas extraction borehole sealing detection device and detection method
  • Gas extraction borehole sealing detection device and detection method
  • Gas extraction borehole sealing detection device and detection method

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[0029] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

[0030] Such as figure 1 As shown, a gas drainage borehole tightness detection device of the present invention includes: a pressure sensor 3 for detecting real-time pressure, a flowmeter 11 with a built-in flow sensor, a sealing sleeve 4, and a device for judging and feeding back the detection result Gas drainage hole tightness detector 6, one end of the sealing sleeve 4 is open, and two holes are opened in the middle of the other end, the open end of the sealing sleeve 4 is fixed on the coal wall 2, and the pressure sensor 3 Vertically insert through a hole of the sealing sleeve 4 into the gas drainage borehole 1 in the coal wall 2. One end of the flow meter 11 is connected to the hard pipe 12, and the other end is connected to the soft pipe 10. The hard pipe 12 is inserted vertically through the other hole of the sealing sleeve 4 into the gas draina...

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Abstract

The invention discloses a gas extraction borehole sealing detection device and a detection method. The device comprises a pressure sensor, a flow meter, a sealing sleeve and a gas extraction borehole sealing detector. One end of the sealing sleeve is opened and two holes are opened in the middle of the other end, and the open end of the sealing sleeve is fixed on a coal wall. The pressure sensor passes through one hole of the sealing sleeve to vertically insert into a borehole. One end of the flow meter is connected with a hard conduit, and the other end of the flow meter is connected with a flexible conduit. The hard conduit passes through the other hole of the sealing sleeve to vertical insert into the borehole, and the flexible conduit is connected with an air pump. The pressure sensor and the flow meter are connected with the gas extraction borehole sealing detector through leads and are parallel to each other. The device is convenient to carry and simple to operate, the sealing detection of different boreholes can be achieved, the detection time is short, and the result is reliable.

Description

technical field [0001] The invention relates to the technical field of coal safety monitoring, in particular to a gas drainage borehole sealing performance detection device and detection method. Background technique [0002] Among the five types of disaster accidents in my country's coal industry, coal seam gas disasters have become one of the most serious accident types in the coal mine production process in recent years due to their characteristics of large damage, many casualties, and high accident frequency. In coal mining, the extraction rate is directly related to the sealing effect of the borehole. The existing sealing methods mainly include: cement mortar sealing, yellow mud sealing, polyurethane sealing and traditional hole sealing. But each method is difficult to fully guarantee the quality of sealing. [0003] According to the existing technology, it is difficult to judge the sealing effect after sealing; if the sealing effect is not satisfactory, it is difficul...

Claims

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Application Information

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IPC IPC(8): G01M3/26
CPCG01M3/26
Inventor 刘春张浩峰丁前程薛劲
Owner CHINA UNIV OF MINING & TECH
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