Active fire prevention and extinguishing technique of preventing coal self-combustion in goaf

Abstract

The invention relates to an active fire prevention and extinguishing technique of preventing coal self-combustion in goaf, and comprises a temperature control blowout fire prevention and extinguishing ball and a transfer laying equipment. The temperature control blowout fire prevention and extinguishing ball comprises a shell body, a protective wire mesh structure inside the shell body and a fire extinguishing agent filled inside the shell body. The temperature control blowout fire prevention and extinguishing ball is transferred and arranged to a site of an easily self-igniting coal goaf by adopting the transfer laying equipment, when the temperature of a coal goaf rises to a certain degree of temperature, the shell body of the temperature control blowout fire prevention and extinguishing ball bursts on its own, the fire extinguishing agent rapidly scatters and diffuses over the self-igniting zone, the fire hazard is removed in a swamping mode, the temperature control blowout fire prevention-and-extinguishing ball acts as an active fire prevention and extinguishing agent when the coal body in coal goaf has a self-igniting tendency or is at an early stage of combustion. The active fire prevention and extinguishing technique in coal mine goaf is safe and environmentally friendly, low in cost, high in reliability, quick in response and easy in construction deployment, and the problem of self-igniting oxidative inflammation in coal mine goaf is solved.

Description

technical field [0001] The invention relates to the field of coal mine fire prevention and extinguishing technology, in particular to an active fire prevention and extinguishing technology for preventing spontaneous combustion of coal in goafs. Background technique [0002] my country is rich in mineral resources, and coal is the basic energy of our country. The national "Energy Medium and Long-Term Development Plan (2004-2020)" clearly stated that "adhere to the energy strategy of taking coal as the main body, electric power as the center, and oil and gas and new energy development in an all-round way. "Target. In order to meet the needs of the rapid growth of the national economy, coal is still the main energy source in our country, and it is necessary to ensure high and stable production and safe mining of coal for a long period of time in the future. Therefore, realizing safe and efficient mining is an important guarantee for the continuous and effective supply of nation...

AI Technical Summary

Problems solved by technology

The former belongs to passive fire prevention and has extremely high requirements for detection methods. However, the goaf area is large and the terrain is complex, which is prone to detection omissions. Fire prevention measures can be taken in time to cause goaf fires; although the latter adopts preventive perfusion technology to achieve the effect of inhibiting the spontaneous combustion of coal remaining in goafs in advance, but this method consumes a lot of materials, costs high, and has a short resistance life. Almost all areas of the goaf must be poured, but it is inevitable that omissions will occur. Moreover, the inhibitor is prone to failure due to the humid environment of the goaf, and the existence of goaf grooves makes the inhibitor easy to accumulate in low-lying places. , and the high loose coal will easily prevent the inhibitor from fully covering the spontaneous combustion area, thus losing the effect of preventing coal spontaneous combustion in the goaf

At the same time, the pouring construction is difficult, the requirements for the pipeline are high, and the phenomenon of wear and pipe plugging is prone to occur.

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