MONITORING THE IGNITION OF TECTONIC-COAL WITH ITS FACTOR ANALYSIS IN THE COAL MINE OF QIANJING, SHANXI PROVINCE, CHINA

This article presents the monitoring of tectonic-coal ignition with its factor analysis with taking on-site inspection and field work measurements in the case study of the coal mine of Qianjing, Shanxi Province, China. The results show that, when nitrogen injection control measures was in a side entry of the working face, the CO-concentration in the upper corner of the working face and in the return air was remaining at a stable level, at which moment the absolute value of CO-concentration was at the level of 0.031????3 /min. Especially when starting to weaken the equalized pressure ventilation system, the CO-concentration in the upper corner of the working face and in the return air was being lower than before, with the absolute CO-concentrationat 0.029????3 /min. The results indicate that the timely inspection, factor analysis, and prediction of tectonic-coal developing areas are effective measures to prevent the tectonic-coal ignition and CO gas emission in the case study. The study shall provide a new reference for monitoring the ignition of tectonic-coals in the similar coal mines in China or other countries.