Study On 11 Coal Mine Xieqiao Left Pillar Mining Of Coal Spontaneous Combustion Prevention And Control Technology

Study on the prediction of engineering background in Xieqiao coal mine fire prediction of small coal pillar, in Xieqiao coal mine 11 coal by setting small coal pillar to replace the large width of coal pillar when the early small coal pillar coal to spontaneous combustion problem, first of all, low temperature oxidation of coal pyrolysis of small coal pillar coal face according to the test results, optimized index gas, a quantitative relationship between signs and content of coal gas temperature, and the temperature of the coal spontaneous combustion of small coal pillar is analyzed through the self-made thermocouple temperature measurement system, which is used to forecast coal spontaneous combustion, the small coal pillar of coal spontaneous combustion prediction technology secondly, from the theoretical analysis of the mechanical state, the process of mining of small coal pillar stress-strain characteristics, failure mechanism and small coal pillar design principle, through theoretical calculation, the number of Value simulation and testing phenomenon comprehensive analysis that small coal pillar and reasonable design size; reuse working surface position testing and tracing technique of small coal column and goaf air leakage distribution was studied, for the take measures to prevent and suppress small coal pillar coal spontaneous combustion; finally, a comprehensive analysis of the theoretical study and practical measured results, put forward to set aside a small coal pillar mining working face coal spontaneous combustion prevention and control technology. The research results of this paper have important significance to improve the coal recovery rate and safe mining in the coal mine of Xie Qiao coal mine.