Gas pressure rapid measuring device and measuring method

A rapid measurement and gas pressure technology, applied in mining equipment, earth-moving drilling, mining equipment, etc., can solve the problems of long measurement period and gas leakage in the drilling and crushing circle, and achieve the effect of reduced time and easy operation.

Active Publication Date: 2021-01-22
CCTEG SHENYANG RES INST
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  • Abstract
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  • Application Information

AI Technical Summary

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 pressu

Method used

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  • Gas pressure rapid measuring device and measuring method

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0020] Example 1

[0021] like 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 to open a drill hole 5, and a pressure measuring gas chamber 14 is opened on the back of the coal seam. The gas pressure rapid measuring device includes at least Four sealing capsules 6, gas injection device 1, gas injection pipe 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 A second sealing section 13 , a gas injection space 12 and a first sealing section 11 are formed in sequence from the coal seam 10 to the orifice 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 measuring gas chamber 14, the second end of the pressure measuring ...

Example Embodiment

[0026] Example 2

[0027] For the method for rapid gas pressure measurement, the gas pressure rapid measurement device in Example 1 was used.

[0028] Drilling holes 5 with corresponding diameters are constructed at predetermined positions by means of a drilling rig, and the drilling holes 5 are constructed through or along the coal seam 10 . After the construction of the drilling hole 5 is completed, put the pressure measuring tube 8, the sealing capsule 6 and the liquid injection pipe 7 into the designated position in the drilling hole 5, and use the liquid injection pipe 7 to inject the sealing liquid 9 into the capsule and the designated space of the drilling hole 5. , and plug hole 5. The sealing capsules are divided into 6 and 4, and the drill hole 5 is divided into a pressure measuring air chamber 14, a second sealing section 13, a gas injection space 12, and a first sealing section 11 from the inside to the outside. After sealing the hole, open the control device 3 t...

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Abstract

The invention relates to the technical field of coal seam gas pressure measuring, in particular to a gas pressure rapid measuring device. The device comprises at least four hole sealing capsules, a gas injection device, a gas injection pipe, a pressure measuring pipe, and a control device. The hole sealing capsules are arranged inside a drill hole at intervals to form a second hole sealing section, a gas injection space and a first hole sealing section which are sequentially arranged in the direction from a coal seam to a drill hole opening. The first end of the pressure measuring pipe penetrates through the hole sealing capsules and the coal seam and extends to a pressure measuring gas chamber; the second end of the pressure measuring pipe is sealed or provided with a pressure gauge; thefirst end of the gas injection pipe is open and arranged inside the gas injection space; and the gas injection device is connected with the second end of the gas injection pipe which is provided withan gas injection switch. A first pressure sensor and a second pressure sensor are arranged on the pressure measuring pipe and the gas injection pipe respectively; the control device is in signal connection with the first pressure sensor, the second pressure sensor and the gas injection switch respectively; and the measuring device is suitable for the rapid measurement of underground coal seam gaspressure. The invention also provides a gas pressure rapid measuring 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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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
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