Research On Geologic Controlling Factors Of Coal And Gas Outburst Of E Group Coal Seams In Pingdingshan Mining Area

This thesis has summarized Pingdingshan Mining Area coal and gas outburst features by the means of collecting, statisticing and analysing 150 times of coal and gas outburst card that happened in Pingdingshan Mining Area. According to the characteristics that 79 % of coal and gas outburst have relations with geologic structure, expound the impact of geologic structure over gas occurrence and coal and gas outburst from the geologic structure of orefield and geologic structure of NO.1 coal mine and NO.10 coal mine, on that basis, take the E group coal seams within adjacent NO.1 coal mine and NO.10 coal mine as the specific research object, analyse the geologic structure of NO.1 coal mine and NO.10 coal mine, find out the otherness geologic factors of outburst dangerous of E group coal seams within adjacent coal mine:(1) Geologic structure is relative concentrated and inter-compound within NO.10 coal mine, and it is disperse and the complex properties is low within NO.1 coal mine;(2) Geologic structure forms tectonic stress concentration belt within NO.10 coal mine, and it is unconspicuous within NO.1 coal mine;(3) The piezotropy or shear presented by the tectonic stress concentration belt of NO.10 coal mine is obvious higher than NO.1 coal mine.At last, this paper applies Analytic Hierarchy Process to analyse coal and gas outburst related indexs and construct the mathematical model, determine the order of priority of controlling factor of coal and gas outburst that happened in E group coal seams within Pingdingshan Mining Area, that is: geologic structure, gas content, tectonic coal and gas pressure so on.