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Method for preventing goaf spontaneous combustion through superfine inhibitor water mist

A goaf and water mist technology, applied in fire prevention, dust prevention, mining equipment, etc., can solve the problems of prevention and control effects and economic benefits to achieve better results, and achieve high fire prevention and extinguishing efficiency, low cost, and good flow sexual and diffuse effects

Inactive Publication Date: 2018-11-20
LIAONING TECHNICAL UNIVERSITY
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  • Abstract
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  • Claims
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Problems solved by technology

Most of the existing goaf fire control technologies are difficult to achieve good results in both prevention and economic benefits.

Method used

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  • Method for preventing goaf spontaneous combustion through superfine inhibitor water mist
  • Method for preventing goaf spontaneous combustion through superfine inhibitor water mist

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Embodiment Construction

[0017] General situation of the working face, there are 9, 12, 16, 18 and 20 coal seams that have been mined in a certain mine, and the 12 and 16 coal seams are currently being mined. Among the above-mentioned coal seams, 9 and 16 are Class II (spontaneous combustion) coal seams, 12 and 18 , 20 are Class I (easy to spontaneous combustion) coal seams, and all coal seams are explosive. There is currently 1 hydrostatic pool on the ground with a total capacity of 200m3. The pool has been antifreeze (insulation boards were installed around the pool when it was constructed) and protective measures have been taken. The dust-proof main road is a six-inch seamless steel pipe, with a total length of 2,480 meters, and the branch pipeline is a two-inch seamless steel pipe, with a total length of 18,280 meters. The main water supply route is the auxiliary well shaft—level 155—return air inclined shaft in the south area—the bottom of the shaft is negative 440 north wing return air lane, an...

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Abstract

The invention discloses a new method for preventing goaf spontaneous combustion, which is characterized in that: at first, an easy self-ignition area of a goaf is determined, since the influence of the mine pressure to coal and rock mass in an oxidizing zone area of the goaf is greater than that to a heat dissipation zone, and the coal and rock mass is further compressed and crushed, so that the porosity of the area is reduced, air leakage channels are reduced, and the heat generated through oxidization of the coal mass is easily accumulated; the oxygen supply condition of the area is more sufficient compared with a suffocative zone, so that the coal and rock mass form high-temperature point spontaneous combustion with sufficient oxidization; and then, a goaf superfine inhibitor water mistspraying system is established, and the goaf superfine inhibitor water mist spraying system comprises a movable pump station, a liquid storage tank, a hydraulic bracket, a nozzle, a pipeline and thelike. According to the new method for preventing goaf spontaneous combustion, a water retention film is formed on the surface of residual coal of the goaf, the inhibitor enters a coal fracture to realize the cooling and oxygen isolating effect, and finally, the purpose of preventing the goaf from spontaneous combustion is realized.

Description

technical field [0001] The invention relates to the field of coal mine safety production, in particular to the prevention and treatment of coal spontaneous combustion in goafs. Background technique [0002] According to statistics, natural fires in my country's mines account for 94% of the total number of fires, and spontaneous combustion in goafs accounts for 60% of internal fires. The prevention and control of internal fires in mines should focus on the prevention and control of fires in goafs. Once a mine fire caused by coal spontaneous combustion occurs, the fire develops rapidly in the confined space underground, with complex changes, the fire area spreads to a wide range, and large-scale coal combustion causes serious waste of resources. And because the location of the fire source is relatively hidden, it is difficult for personnel to get close to put out the fire, so measures to close the fire area have to be taken, so that a large amount of coal mining equipment is l...

Claims

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Application Information

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IPC IPC(8): E21F5/04
CPCE21F5/04
Inventor 赖鑫琼
Owner LIAONING TECHNICAL UNIVERSITY
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