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煤与瓦斯突出是威胁煤矿安全生产的重要灾害之一,目前,国内煤与瓦斯突出预测主要是根据瓦斯动力现象特征和四参数法,但实践表明,对于低瓦斯压力高变质煤和高瓦斯压力低变质煤容易产生误判。煤与瓦斯突出是由多种因素综合作用的结果,因此,采用综合指标D、K法在三元煤矿突出鉴定中进行了应用,测定煤样的瓦斯放散初速度为36.2 mm Hg,煤层瓦斯压力为0.74 MPa,软分层的平均坚固性系数为0.5,综合判定三元煤矿C12煤层在预测范围无突出危险。
Coal and gas outburst are one of the major disasters that threaten coal mine safety production. Currently, domestic coal and gas outburst prediction is mainly based on gas dynamic characteristics and four-parameter method. However, practice shows that for low-methane gas with high metamorphic coal and high gas pressure Low-quality coal prone to miscarriage of justice. Coal and gas outburst are the result of a combination of many factors. Therefore, the comprehensive indexes D and K are applied in the outstanding identification of the ternary coal mines. The initial gas release rate of the coal sample is 36.2 mm Hg and the gas pressure of the coal seam Is 0.74 MPa, and the average sturdy coefficient of soft stratification is 0.5. It is concluded that C12 coal seam of Sanyuan Coal Mine has no outstanding risk in the prediction range.