Study On Gas Geology Law And Gas Control Technology Of The Sevevth Seam In Zhaoguan Coal Mine

In this paper, based on the theory of Gas – geology, cause of mine in background(seam gas content) analysis by metallogenic region geological features and evolution of geologic structure,coming to a conclusion that magmatic rocks in the two wings and faults control the distribution of the entire mine coal and gas occurrence.On this basis, obtain three aspects of factors,namely buried depth of bedrock and magmatic rocks and faults.Accrding to above three factors,wecan easiy analyse 7# coal seam gas occurrence of geological rules and use Surfer 8.0 to draw the gas content isoline and study the distribution trend of the geological factors and coal seam gas content.Drilling pressure predictive values were calculated by seam gas content with the model prediction and values, on that basis,potted 7 coal seam gas geology map and outburst regional division.Summarize the characteristics of mine gas disasters, and puts forward the basic thinking comprehensive control of gas in the future. The gas disaster frequency decrease greatly.The gas comprehensive governance preliminary results.