Stydy On Gas Control Of Tingnan Coal Mine204Working Face

Gas is one of the major disaster influences on mine production safety.Tingnan coal mine is a highly gassy mine, through theoretical analysis, numerical simulation and field test,this thesis aims to coal mine gas for gas disaster research and puts forward the gas control scheme on the204working face for realizing safety mining.4#coal of Tingnan coal mine is gas thick coal seam. The first working face204is large mining height, high gas and easy self-ignition face.46%of the120days at the beginning of first mining the gas concentration in return airway was too high for mining. Sometimes the average value of gas density was as high as1%which made gas in upper corner goes beyond the limit and made serious threat to safety production of working face..This paper research on gas migration rule and gas extraction from engineering based on the current study, the basis of the theory of coal mining, coal mine gas prevention and control theory and mining pressure and strata control, through the numerical simulation analysis of the migration law of gas in coal seam mining and the4#coal base parameters determination test, by the forecast of gas emission and gas drainage radius tests to determine a set of design and some gas governance plan suitable for gas extraction Tingnan coal mine204working, which makes204working face have no gas accident happens in the process of production, ensure the safety of mine production.