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以瓦斯地质理论为基础,研究了皖北矿区五沟矿瓦斯风氧化带的界限、构造煤发育规律,进行了煤与瓦斯突出危险区划分。以煤层瓦斯成分和瓦斯含量为指标确定煤层瓦斯风氧化带界限,煤层底板标高-200~-330 m以浅为煤层瓦斯风氧化带;构造煤分布,区域上分区分带,层域上具有分层特征。煤与瓦斯区域突出危险性预测的瓦斯含量临界值定为7 m3/t,低于《防治煤与瓦斯突出规定》的8 m3/t;煤层底板等高线-450 m以浅,为低瓦斯区,矿井深部,向斜轴部,构造煤发育,瓦斯含量>7 m3/t,具有煤与瓦斯区域突出危险性。
Based on gas geological theory, the boundary of gas wind oxidation zone in Wugou Mine in northern Wanbei Mining Area was studied, and the rule of tectonic coal development was studied. The division of dangerous area of coal and gas outburst was carried out. Based on the gas composition and gas content of coal seam, the limit of gas and air oxidation zone of coal seam is determined. The elevation of coal floor is -200 ~ -330 m with the shallow coal seam gas and air oxidation zone. The distribution of tectonic coal is divided into upper and lower zones, feature. The critical value of the gas content in the coal and gas outburst danger prediction is set at 7 m3 / t, which is lower than 8 m3 / t under the provisions of “Prevention and Control of Coal and Gas Outburst”; the seam floor contour is shallow at -450 m and low gas area , Deep mine, syncline axis, tectonic coal development, gas content> 7 m3 / t, with coal and gas areas highlight the danger.