Research Of The Gas-geology Law And Gas Forecasting In Fangzhuang â…¡ Mine

Gas is a product of geological processes, migration and preservation conditions are controlled by geology. The current coal seam gas occurrence is the result of coal seam with complex geological evolution, and gas generation.In this paper, using tectonic gradual control theory,combineing large statistics field measurement gas data, using gas geological theories and methods, studyed influence of geological evolution history on the Jiaozuo Mining Area gas occurrence;analysised characteristics of Tectonic control and gas seam storage in Fangzhuangâ…¡mine; analysised impact of the mine hydrogeology on gas; forecast gas content of mine and mine gas emission; revealed diacussing the geological evolution of the gas occurrence control characteristic in Fangzhuangâ…¡mine. Research shows that:â‘ The Taihang Mountains uplift, Piedmont fault of the structure from the mining area in Jiaozuo control characteristics;â‘¡Jiaozuo mining area in the under control by Taihang mountains, NE and NNE fault development broader, the multi-stage compression, shear structure of the transformation, easy gas occurrence, increasing coal and gas outburst hazard, and NW-fault is easy for gas release, but in the intersecting NE- fault and EW-fault fault location and pointed out the stress concentration, the coal gas enrichment, which is beneficial to the damage;â‘¢Seam depth is is mine Fangzhuang second one of the factorscontrolling the gas content;â‘£Mine hydrogeology is control of the important factors that gas occurrence of coal from more than 20m disruption to a disk with fault limestone communication, taiyuan formation dish gas migration and control the occurrence. According to study for mine planning , mine ventilation design, use extraction of coal bed methane and forecast the coal and gas outburst harard.