COAL MINE GAS ABNORMAL EMISSION INDUCING FACTORS, MANIFESTATION EMISSION MECHANISM

In order to explore the key scientific issues of coal mine gas abnormal emission disaster prevention and control, develop intelligent gas disaster early warning and prevention and control equipment, and ensure the safe and efficient mining of high gas mines, based on the multi factor dynamic time-space coupling complexity characteristics of coal mine gas abnormal emission disaster, this paper analyzes and discusses the inducing factors, manifestation and emission mechanism of gas abnormal emission disaster. It is concluded that the abnormal gas emission of coal mine is a gas disaster induced by geological factors, mining factors, mine vibration and other factors, and shows three forms: rapid increase and rapid decrease type, rapid increase and slow decrease type, and periodic fluctuation type. From the perspective of comprehensive energy, it is concluded that the abnormal gas emission is actually a process of unbalanced release of coal gas expansion energy. The results show that the abnormal gas emission of coal mine is controlled by many factors, and the incubation mechanism and evolution process are complex. The emission mechanism is actually the process of unbalanced release of coal gas expansion energy, which provides a theoretical basis for the implementation of the prevention and control technology of abnormal gas emission.