摘要
通过对芙蓉煤矿下平硐B3+4煤层中央盘区的瓦斯压力P、煤层透气性系数λ0、煤的普氏系数f和1m钻孔体积内的煤粉重量S1测试,采用理论分析得出钻孔瓦斯解吸指标K1、钻孔瓦斯涌出初速度q、钻屑量S的临界值。根据现场检验结果表明采用理论方法确定的临界值能有效地判断突出危险性。
With the site test and measurement on gas pressure P, seam gas permeability coefficient λ_(0), coal consistency coefficient f and coal powder weight S_1 from a one meter borehole conducted in B_(3+4) seam at the central mining district of a drift of Furong Mine and with the theoretic analysis, a gas desorption index K_1 of the borehole, gas emission initial velocity q of the borehole and the critical value of drilling cuttings weight S were obtained. The site test and measurement results showed that the critical value set by the theoretic method could efficiently judge the outburst danger.
出处
《煤炭科学技术》
CAS
北大核心
2004年第1期59-62,58,共5页
Coal Science and Technology
基金
国家司法部资助项目
司狱字(2001)第355号
关键词
煤与瓦斯突出指标
钻屑量
临界值
coal and gas outburst index
value of drilling cuttings weight
critical value
