Research on gas occurrence regularity in Jinneng coal mine

Mine gas generation,migration,occurrence and release are closely related with various changes of geological history periods,the occurrence of gas in coal body not only has influence to the coal seam gas content size,but also directly affects the gas flow in coal seam and the size of the risk of a disaster.Now gas content preserved in the coal seam depends on the conditions of gas migration towards the surface and the performance of coal seam gas,the occurrence of gas is closely related with the regional geological structure,buried depth,and the thickness of coal seam,etc,gas control work is one of the key work of mine safety.This research clearly presents the occurrence regularity of gas for the prevention and control,for prevention and control of coal and gas outburst,forecasts the next exploitation level of the gas distribution rule and gas outburst risk has important guiding significance.The paper puts forward the conditions that affect the coal bed gas storage are regional geological structure mining work,roof and floor of coal seam thickness of mudstone and coal seam buried depth and thickness of overlying rock.In order to prevent and control mine gas disasters in advance,the main factors affecting gas content of coal seam gas occurrence and the geologic factors are discussed;the coal seam gas content and gas emission factors are analyzed,the gold mine coal seam gas occurrence and gas emission regularity are analyzed.According to these factors coupled with the status of coal seam gas occurrence and overview of gas reserves the coal seam of gold mine.Analysis has been made in terms of the gas occurrence regularity.