Tectonic Control Analysis of Gas Occurrence Laws in Chongqing Yanjing No.2 Mine

In order to reveal gas occurrence laws and tectonic in Yanjing No.2 mine on control action of gas occurrence, based on the regional tectonic characteristic and its evolution, the paper analyzes the control action of geological structure factors such as tectonic evolution, structural types, roof and floor lithologic and hydrogeology on coalfield gas occurrence. The results show that twice gas generation process is the basis of current gas occurrence during the coalfield tectonic evolution.the control of later tectonic stress field evolution on coalfield tectonics development laws, sedimentary characteristics and groundwater, Changes the gas preservation conditions,which leads to the gas distribution differences.