Drill hole gas extraction laboratory simulation system and method

A technology for laboratory simulation and gas drainage, which is applied to gas discharge, earth drilling, mining equipment, etc., can solve problems such as high manpower and material resources and unsatisfactory test results

Active Publication Date: 2018-01-05
XIAN UNIV OF SCI & TECH
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Problems solved by technology

At present, most of these tests are carried out on site, and there are relatively few laboratories that can carry out such tests, and the undergro

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  • Drill hole gas extraction laboratory simulation system and method
  • Drill hole gas extraction laboratory simulation system and method
  • Drill hole gas extraction laboratory simulation system and method

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[0088] Such as figure 1 As shown, the borehole gas drainage laboratory simulation system of the present invention includes a borehole simulation tube 7, a plugging grouting system, a gas pressure simulation loading system, and a gas detector 24, as well as an acoustic emission system and an acoustic emission system. Connected to the computer 17; the borehole simulation pipe 7 is provided with plug simulation structures 8 at both ends, and a section of the borehole simulation pipe 7 between the two plug simulation structures 8 is provided with multiple crack simulation holes 1. A crack simulation pipe 17 is connected to the crack simulation hole 1, and an air leakage detection switch 9 is connected to the crack simulation pipe 17;

[0089] The plugging grouting system includes a grouting pipe 20 and a grouting pipe 6 extending into the borehole simulation pipe 7, and a grouting pump 23 connected to the grouting pipe 20; the grouting pump 23 is provided with Grouting handle 22 and ...

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Abstract

The invention discloses a drill hole gas extraction laboratory simulation system which comprises a drill hole simulation pipe, a hole sealing slip casting system, a gas pressure simulation loading system, a gas detector, a sound emission system and a computer; the two ends inside the drill hole simulation pipe are provided with plug simulation structures, a plurality of crack simulation holes areformed in the wall of the drill hole simulation pipe, a crack simulation pipe is connected to each crack simulation hole, and a gas leakage detection switch is connected to each crack simulation pipe;the hole sealing slip casting system comprises a slip casting pipe, a slip returning pipe, a slip casting handle and a slip casting pressure gauge; the gas pressure simulation loading system comprises a vacuum pump, a gas tank, a vacuum pressure gauge, a vacuumizing switch, a gas tank switch, a gas pressure gauge and a gas extraction switch. The invention further discloses a drill hole gas extraction laboratory simulation method and a hole sealing material sealing performance testing method. The on-site situation can be truly simulated, little manpower and material resources consumed by experiments are consumed, the experiment effect is good, the experiment result accuracy is high, and practicability is high.

Description

technical field [0001] The invention belongs to the technical field of borehole gas drainage, and in particular relates to a laboratory simulation system and method for borehole gas drainage. Background technique [0002] In most areas of my country, coal seams have high gas content, high pressure, low coal seam permeability, and complex geological structure conditions. The gas disaster is one of the main disasters in my country's coal mines, which poses a serious threat to the safe production of the mine, and the sealing effect of the borehole directly affects the gas drainage effect and the effective drainage radius of the borehole. More than 80% of the air in the system is inhaled through boreholes. If the inhaled air volume of the boreholes is reduced by 1 / 2 to 1 / 3, the gas flow rate in the boreholes can be increased by 1.5 to 2 times. Therefore, the sealing effect directly affects the gas extraction effect. During the process of gas drainage drilling and sealing, since...

Claims

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Application Information

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IPC IPC(8): E21F7/00E21F17/18E21B47/00
Inventor 张天军蒋兴科包若羽张磊宋爽陈佳伟葛迪周敖赵云红范亚飞
Owner XIAN UNIV OF SCI & TECH
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