Coal rock upward borehole gas parameter measurement method

A measurement method and gas technology, applied to the measurement of gas parameters in coal and rock upward drilling, and in the field of measurement of gas parameters in coal and rock upward drilling, can solve the problems of easy subsidence of drilling holes and influence on the measurement of gas parameters, and achieve the purpose of suppressing drilling Hole collapse, ensuring the effect of gas drainage, quick disassembly and connection

Inactive Publication Date: 2016-02-17
SHANDONG UNIV OF SCI & TECH
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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for measuring the gas parameters of upward drilling in coal rocks, which mainly solves the problems that the upward drilling in soft coal rocks is easy to collapse and aff

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  • Coal rock upward borehole gas parameter measurement method
  • Coal rock upward borehole gas parameter measurement method
  • Coal rock upward borehole gas parameter measurement method

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Embodiment Construction

[0031] The present invention will be further clearly and completely described below in conjunction with specific embodiments.

[0032] The system used in the gas parameter determination method of coal rock uphole drilling in the present invention, such as figure 1 As shown, it mainly includes a detection device, a blocking device and a measuring device.

[0033] The detection device includes the first pipe body 18, the second pipe body 4 and the third pipe body 2 connected in sequence, wherein the third pipe body extends into the bottom of the borehole 1, and the first pipe body 18 is located at the outermost side of the borehole , the first pipe body 18 can be a drill pipe in the prior art, etc., and the two ends of the second pipe body 4 are provided with threads, and the two ends are respectively matched with the structures in the first pipe body and the third pipe body, which can realize Quick detachable connections such as image 3 As shown, in order to connect more tig...

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Abstract

The invention discloses a coal rock upward borehole gas parameter measurement method. Firstly, upward drilling is carried out on a coal bed in a coal rock roadway, and the borehole is as deep as to the coal bed; then, a detecting and receiving device is arranged, the detecting and receiving device comprises a first pipe body, a second pipe body and a third pipe body connected in sequence, the upper surface of the tail part of the third pipe body is uniformly provided with a plurality of columns of pipe holes at intervals, a cylindrical iron ring is sleeved between adjacent columns of pipe holes, and a drilling rig is used for sending the third pipe body to the bottommost part of the borehole; a sealing device is used for sealing the borehole, a concrete sealing material is combined to carry out sealing processing on the remaining part; a pressure-resisting test is carried out to test borehole sealing effects; and after qualified test, a measurement device is used for measuring gas parameters. Influences on measurement of the gas parameters as the traditional soft coal rock upward borehole is likely to collapse can be well overcome, and the method is particularly suitable for gas parameter measurement in the soft coal rock upward borehole.

Description

technical field [0001] The invention belongs to the technical field of measuring gas parameters of upward drilling of coal and rocks in mines, and in particular relates to a method for measuring gas parameters of upward drilling of coal and rocks. Background technique [0002] Gas pressure and gas content are important parameters to indicate the state of coal seam gas occurrence. It is a key basic parameter in the study of coal and gas outburst, gas gushing, and gas drainage in mines. Therefore, in order to study the law of coal seam gas occurrence and gushing, it is necessary to carry out coal seam gas pressure and gas content. Determination. According to the provisions of the coal industry standard MT / T638-1996 "Direct Measurement Method of Coal Seam Gas Pressure in Underground Coal Mine", the pressure measurement drilling site should be selected in the roadway adjacent to the coal seam, and generally the upward drilling should be drilled in the complete and hard coal roc...

Claims

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Application Information

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IPC IPC(8): G01D21/02
Inventor 刘伟韬赵吉园宋文成
Owner SHANDONG UNIV OF SCI & TECH
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