A collaborative prevention and control method for mine gas and coal fire
A gas coal and mine technology, which is applied in the field of coordinated prevention and control of coal gas and fire in mines, can solve problems such as increased air leakage in goafs, sharp increase in disaster risk and degree of danger, and expansion of conditions for gas explosions in goafs. To achieve the effect of guaranteeing balance and reliable guarantee
Active Publication Date: 2017-03-22
SHAANXI COAL & CHEM TECH INST
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Problems solved by technology
Due to the special nature of the goaf space, the contradiction between gas drainage and fire prevention is obvious. Gas drainage increases the air leakage in the goaf, increases the oxygen content and oxidation degree of the goaf, and makes the temperature of the goaf rise, The change of gas composition in the goaf expands the conditions for gas explosion in the goaf, and it is easy to cause the residual coal to oxidize and spontaneously ignite, which is more likely to lead to the occurrence of gas accidents in the goaf. The danger and degree of danger have increased sharply, posing a serious threat to mine safety production
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[0022] The purpose of the patent of the present invention is to balance the relationship between gas drainage and fire prevention and extinguishing in high-gas and spontaneously combustible mines, and to provide a reasonable, feasible, practical and convenient method and device for coordinated prevention and control of mine gas and coal fires.
[0023] In order to achieve the above object, the patent of the present invention adopts the following scheme:
[0024] A coordinated prevention and control device for mine gas and coal fires, comprising a data acquisition module, a data processing module, an adjustment control module and an audible and visual alarm module. The data acquisition module includes a CO sensor, a gas sensor and a wind speed sensor, which respectively monitor the CO concentration in the goaf, the gas concentration of the working face and the wind speed of the working face, and are connected to the data processing module at the same time; the data processing mo...
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The invention discloses a method and device for coordinated prevention and control of mine gas and coal fire. Whether the CO concentration is within the threshold range, if not, adjust the corresponding parameters by adjusting the wind speed until the three parameters are all within the threshold range. Change the wind speed field, gas concentration distribution field, and CO concentration distribution field of the coal mining face by automatically controlling the air volume adjustment equipment, gas drainage equipment, and nitrogen injection fire prevention equipment to ensure the gas concentration and goaf of the coal mining face The CO concentration is within a safe and reasonable range, and an alarm will be issued for the bad state. The gas coal fire coordinated prevention and control method and device are simple to operate, strong in practicability, and have good promotion and application value.
Description
[0001] 【Technical field】 [0002] The invention relates to a method and device for coordinated prevention and control of gas and coal fires, in particular to a method for coordinated prevention and control of mine gas and coal fires. [0003] 【Background technique】 [0004] For high gassy mines with coal seams that are prone to spontaneous combustion, gas explosions in gobs and coal spontaneous combustion fires are the two most common spontaneous combustion disasters in mines. The goaf can be regarded as a confined space of porous media, and multi-component gas is distributed in the middle, and its main components include CH 4 . Due to the special nature of the goaf space, the contradiction between gas drainage and fire prevention is obvious. Gas drainage increases the air leakage in the goaf, increases the oxygen content and oxidation degree of the goaf, and makes the temperature of the goaf rise, The change of gas composition in the goaf expands the conditions for gas explo...
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IPC IPC(8): E21F17/18E21F5/00
Inventor 司俊鸿王鹏徐文全黄欣朱兴攀王琳华
Owner SHAANXI COAL & CHEM TECH INST