A Gas Drainage Borehole Sealing Detection Device and Detection Method

A sealing detection and gas extraction technology, which can be used in liquid/vacuum measurement for liquid tightness, and by measuring the acceleration and deceleration rate of fluid. The effect of sealing holes is not ideal, so as to achieve the effect of convenient learning and operation, small space occupation, and few buttons
CN107101787BActive Publication Date: 2019-07-26CHINA UNIV OF MINING & TECH
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA UNIV OF MINING & TECH
Publication Date
2019-07-26

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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.
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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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