摘要
为了消除石门揭煤过程中煤与瓦斯突出危险性,孟津矿采用钻屑瓦斯解吸指标Δh2进行预测。通过煤与瓦斯突出能量方程及实验室测定的钻屑解吸强度和瓦斯压力的关系确定出孟津矿瓦斯突出压力临界值,进而推导出钻屑瓦斯解吸指标的临界值Δh2=200 Pa,结果表明:该临界值适合孟津矿,保证了煤矿安全生产。
In order to eliminate the danger of rock and coal outbursts at cross-cut,gas desorption index of drill cutting Δh2 is used for the relevant prediction in Meng＇jin Mine.By energy equation of coal and gas outburst and the relation of drill cutting desorption strength and gas pressure studied in laboratory,the critical pressure value of gas outburst of Meng＇jin coal mine is determined.And then the critical value of gas desorption index of drill cutting Δh2=200 Pa is obtained.The results show that the critical value adapts to Meng＇jin Mine,and it ensures work safety in mining.
出处
《中国煤炭》
北大核心
2010年第12期88-90,73,共4页
China Coal
关键词
煤与瓦斯突出
能量方程
钻屑瓦斯
解吸指标
解吸强度
瓦斯压力
coal and gas outburst
energy equation
gas desorption
index of drill cutting
desorption strength
gas pressure
