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Gas pressure rapid measuring device and measuring method

A technology for rapid measurement and gas pressure, applied in mining equipment, earthwork drilling, mining equipment, etc., can solve the problems of long measurement period, gas leakage in the drilling broken circle, etc., to achieve easy operation and reduce the time of human operation response Effect

Active Publication Date: 2021-10-22
CCTEG SHENYANG RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The object of the present invention is to aim at the defects and deficiencies of the prior art, and provide a device and a measuring method for rapid measurement of underground coal seam gas pressure, which is suitable for rapid measurement of underground coal seam gas pressure, and aims at long gas pressure measurement period and borehole breakage The problem of gas leakage in the ring was raised

Method used

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  • Gas pressure rapid measuring device and measuring method

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Effect test

Embodiment 1

[0021] Such as figure 1 As shown, the gas pressure rapid measuring device in this embodiment is used to measure the gas pressure of the underground coal seam 10, and the underground construction faces the coal seam 10 direction to set up a borehole 5, and the back side of the coal seam provides a pressure measuring gas chamber 14, and the gas pressure rapid measuring device includes at least Four sealing capsules 6, gas injection device 1, gas injection tube 4, pressure measuring tube 8 and control device 3, wherein the sealing capsules 6 are arranged at intervals in the borehole 5, between two adjacent sealing capsules 6 Form the second sealing section 13, the gas injection space 12 and the first sealing section 11 which are sequentially arranged in the direction from the coal seam 10 to the opening of the borehole 5, and the first end of the pressure measuring tube 8 extends through the sealing capsule 6 and the coal seam 10 To the pressure measurement chamber 14, the second...

Embodiment 2

[0027] The gas pressure rapid measurement method uses the gas pressure rapid measurement device in Example 1.

[0028] A drilling rig is used to construct a borehole 5 with a corresponding aperture at a predetermined position, and the borehole 5 passes through the coal seam 10 or is constructed along the coal seam 10 . After the drilling 5 is completed, put the piezometric tube 8, the sealing capsule 6, and the liquid injection tube 7 into the specified position in the drilling 5, and use the liquid injection tube 7 to inject the sealing liquid 9 into the space between the capsule and the specified drilling 5 , Borehole 5 is blocked. The sealing capsules are divided into 6 and 4, and the borehole 5 is divided into a pressure measuring chamber 14, a second sealing section 13, an air injection space 12, and a first sealing section 11 from the inside to the outside. After the hole is sealed, the control device 3 is opened to monitor the gas pressure P1 of the coal seam 10 in the...

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Abstract

The invention relates to the technical field of coal seam gas pressure measurement. A quick gas pressure measurement device includes at least four sealing capsules, a gas injection device, a gas injection pipe, a pressure measuring tube and a control device, wherein the sealing capsules are arranged at intervals in a borehole to form a The second hole sealing section, the gas injection space and the first hole sealing section are arranged in sequence from the coal seam to the drilling hole. The first end of the piezometric tube extends through the sealing capsule and the coal seam to the pressure measuring chamber. The two ends are closed or a pressure gauge is installed, the first end of the gas injection pipe is open and set in the gas injection space, the gas injection device is connected to the second end of the gas injection pipe, the gas injection pipe is provided with a gas injection switch, and the pressure measuring tube and the gas injection pipe are respectively A first pressure sensor and a second pressure sensor are provided, and the control device is respectively signal-connected with the first pressure sensor, the second pressure sensor and the gas injection switch, and the measuring device is suitable for rapid measurement of underground coal seam gas pressure. The invention also proposes a quick gas pressure measurement method.

Description

technical field [0001] The invention relates to the technical field of measuring coal seam gas pressure, in particular to a quick measuring device and a measuring method for gas pressure. Background technique [0002] Coal seam gas pressure is one of the important parameters of gas occurrence, and it is an important basis for coal and gas outburst identification, regional prediction, outburst elimination effect inspection, etc. Accurate and rapid measurement of coal seam gas pressure is very important. Researchers at home and abroad have conducted extensive and in-depth research on the rapid measurement of gas pressure. At present, there are two types of methods for directly measuring coal seam gas pressure: one is passive pressure measurement, and the other is active pressure measurement. The passive pressure measurement method is a pressure measurement method that relies on the gas existing in the coal seam itself to recover gradually after the hole is sealed. The measure...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21F17/18E21F17/00
CPCE21F17/00E21F17/18
Inventor 王春光李铁良王耀锋李艳增张东旭黄鹤苏伟伟许幸福薛伟超刘春刚李杰郭怀广马金魁程元祥薛彦平闫比男
Owner CCTEG SHENYANG RES INST