Research On Coal Spontaneous Combustion Fire Disaster Management Technology In Mined-out Area Traversed By Roadway

Our country reserves abundant coal, however the mining methods are mostly classifiedto the complex geological structure exploitation, which made the roadway often breakthroughthe goaf and the law of the loss air will be hard to control, so the coal spontaneouscombustion will easily be occurred. Coal spontaneous combustion disaster can not only givethe mine equipment of coal resources a great damage and loss, but also a serious threat tounderground work staff’s life safety, and even make the gas and coal-dust explosion, whichlead to a major malignant casualties. It is significant to study on the coal spontaneouscombustion management technology in mined-out area traversed by roadway.Firstly, the coal spontaneous combustion experiment can be used to find out spontaneouscombustion characteristic parameters, and combining with the field observation data, thispaper analyzes the impact factors of coal seam spontaneous combustion, and then the changelaw of the basic parameters in all process of the coal combustion can be got, also the fire areacharacteristics will be obtained. It will provides the basic data for the management technologyin mined-out area which are traversed by roadwaySecondly, SF6ensemble techniques will be adopted to test the air leakage rule in17060fire place, the effect law of the air leakage to the development of fire area can be assured.Then by using the pressure balancing ventilation technology, plugging technology, the airleakage problem can be done, it can reduce the oxidation thermal of the coal, also can controlthe development of fire area, which won the time for the management work.Again, the factors which are affecting the fire area the characteristics and themanagement difficulties will be analyzed, and compared to the spontaneous combustioncharacteristic parameters of coal samples, it will be fully understood the state of fire place; it Puts the a polymer gel and liquid CO₂as the core of the comprehensive treatment plan to fireprevention. successfully using the sealing management technology to reduce shrinkage of thecoal mine production, the management system of the coal spontaneous combustion inmined-out area traversed by roadway will be established.Finally, the fire in17060is successfully putted out, and the mining progress in PingMeitwelve Mine17062heading face is recovered,which made a huge economic benefits. Theresearch results have a certain significance to the similar problems.