Device for preventing goaf spontaneous combustion in coal mine and using method thereof

Abstract

The invention discloses a device for preventing goaf spontaneous combustion in a coal mine and a using method thereof. The device comprises a gas analysis device, a gas extraction device, an inhibitordevice, a water injection device and a nitrogen injection device, wherein the gas analysis device comprises a beam tube and a CO probe, one end of the beam tube is arranged in a mining face goaf, andthe other end of the beam tube passes through a mining face return airway and other roadways to be finally connected to a ground gas analysis room; the CO probe is arranged at the position where a mining-face upper corner is close to the goaf; the inhibitor device comprises a main inhibitor pipe and an inhibitor box, the inhibitor box is arranged on the upper portion of a mining-face gateway, a plurality of nozzles are arranged on the main inhibitor pipe, one end of the main inhibitor pipe is connected to the bottom of the inhibitor box, and the main inhibitor pipe is located on a mining-facemachine way. By building a goaf monitoring system, a goaf fire-proof system and a goaf fire-fighting system to be comprehensively arranged, the goaf coal-oxidation spontaneous combustion is nipped inthe bud, therefore, personal casualty and property loss are reduced, the phenomenon that a fire happens in the coal mine is avoided, and a good using effect is achieved.

Description

technical field [0001] The invention relates to a coal mine safety device, in particular to a device for preventing goaf spontaneous combustion in a coal mine and an application method thereof, belonging to the technical field of coal mine safety equipment. Background technique [0002] my country is rich in mineral resources, and coal accounts for about 60% of my country's primary energy consumption. Accidents caused by spontaneous combustion in goafs of coal mines lead to casualties and property losses. The wind flow from the working face leaks to the goaf, causing the oxygen in the air to undergo a slow oxidation reaction with the coal, releasing heat. When the heat accumulates to a certain extent, the coal body starts to burn. Due to the different spontaneous combustion grades of coal seams, the spontaneous combustion and ignition period of coal cannot be accurately grasped, so the fire is not easy to be detected, which leads to the occurrence of goaf fires in the mining ...

AI Technical Summary

Problems solved by technology

The injection of preventive grouting materials is passive fire prevention and extinguishing, which requires high fire detection methods in gobs. However, the goaf area is large and the internal conditions are complicated, so it is easy to have problems such as grouting failing to reach the fire location, or grouting pipe blockage, etc. Leading to the failure of fire prevention and extinguishing; the use of chemical inhibitors to prevent fires can achieve the effect of inhibiting the spontaneous combustion of coal left in the goaf in advance, but pouring a large amount of inhibitors into the goaf will greatly increase the cost of mine fire prevention and extinguishing

In view of the fact that the existing goaf fire prevention technology is mostly a single method, the actual application effect is poor, so the invention proposes a comprehensive system to prevent spontaneous combustion of coal mine goaf, and eliminate spontaneous combustion of coal seams in the bud

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