A refined simulation device and method for gas variable negative pressure drainage system

A simulation device and negative pressure technology, which is applied in the field of fine simulation device of gas variable negative pressure drainage system, can solve problems such as limiting the extraction efficiency of drainage holes

A simulation device and negative pressure technology, which is applied in the field of fine simulation device of gas variable negative pressure drainage system, can solve problems such as limiting the extraction efficiency of drainage holes

CN110108614BActive Publication Date: 2022-03-18HENAN UNIV OF URBAN CONSTR
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  • A refined simulation device and method for gas variable negative pressure drainage system
  • A refined simulation device and method for gas variable negative pressure drainage system
  • A refined simulation device and method for gas variable negative pressure drainage system

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Experimental program
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Embodiment Construction

[0036] The specific embodiment of the present invention sees Figure 1-5 :

[0037] A refined simulation device for gas variable negative pressure drainage system, such as Figure 1-5 , comprising a base 21, a sample cylinder 12 placed on the base 21 and a coal body 10 filled in the sample cylinder 12, the base 21 is provided with a support seat 211, and the top of the support seat 211 is a groove adapted to the shape of the sample cylinder 12, The gap between the coal body 10 and the sample cylinder 12 is provided with a rubber body 11, and also includes a negative pressure pump 3, a gas cylinder 16, a pressure pump 17 and a gas injection pipe 18. One end of the sample cylinder 12 is open and drilled into the coal seam. There is a borehole 26, and a drainage pipe 8 extends into the borehole 26, and a sealing body 9 located at the entrance of the drilling hole 26 is filled between the drainage pipe 8 and the drilling hole 26, and the sealing body 9 is made of polyurethane mat...

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Abstract

The invention discloses a refinement simulation device and method for a gas variable negative pressure drainage system. The device includes a base, a sample cylinder placed on the base, and coal filled in the sample cylinder. The simulation device of the invention can simulate extraction The pressure of the coal seam and the pressure of the gas can provide different extraction negative pressures and pressures of the coal body for the experiment, and provide sufficient and accurate data for the experiment; the simulation device can provide different conditions for the experiment when used The permeability data of the coal under the coal body provide sufficient and accurate data for the gas variable negative pressure drainage system.

Description

technical field [0001] The invention relates to the technical field of gas drainage simulation experiments, in particular to a refined simulation device and a use method of gas variable negative pressure drainage system. Background technique [0002] As an associated gas in the process of coal formation, gas is ubiquitous in coal seams. Because the gas itself is explosive and flammable, when a gas accident occurs, it will cause huge casualties and property losses, which is one of the main factors restricting the safe production of coal mines. To this end, gas control must be strengthened. At present, there are many methods of gas control, mainly including surface drainage and underground gas drainage. Due to the particularity of my country's coal seams and the urgency of mining layout, my country's gas control is mainly based on underground gas drainage. A series of drainage boreholes are drilled into the coal seam through the roadway for gas drainage. [0003] When gas ...

Claims

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Application Information

Patent Timeline
18 Mar 2022
Publication
CN110108614B
IPC
G01N15/08; G01N33/22
CPC
G01N33/225; G01N15/08
Inventors
贾炳; 万祥云