Chongqing Research Institute,China Coal Technology and Engineering Group Guizhou Anhe Mining Technology and Engineering Company Limited

为了提高矿井瓦斯抽采、防突达标评价的准确性,构建了多因素指标综合评价体系,该体系主要包括评价单元的划分、抽采基础条件分析、抽采钻孔竣工质量评价、残余瓦斯含量评价、瓦斯动力现象评价等。通过在贵州中岭煤矿12033工作面应用构建的综合评价体系,评价后钻孔控制范围内无明显空白带;钻孔均匀度间距分别为1.63、1.82 m,小于规定值2 m;残余瓦斯含量降到8 m3/t以下;工作面抽采率达到71.8%,大于规定值40%;有效避免了煤与瓦斯突出事故的发生,实现了抽采、防突达标评价工作的规范化和精细化,为贵州省高突矿井预防煤与瓦斯突出事故提供了示范,具有很好的推广应用价值。

in order to improve the accuracy of the mine gas drainage and outburst prevention standard evaluation.acomprehensive evaluation system of the muti actor indexes was establi hed and the system mainly included the evaluatio unit divided.gas drainage basc condition analysis drainage borehole que lty evaluation./esidual gas content evaluaton gas dynamic phenomenon evolution and others. With the esablishment of the comprehensive evaluation system applied toNo.12033 coamining face in Guizhou Znonging Mine afer evaluating there was no obwious blank region.Thed ling borehole unifomity spacing were 1.63 and 1.82 m which was less than the specified value of 2 m.The content ofresidual gas dropped below 8 m3 t.The working face extracion rate reached to 7.8%, which was greater than the specified value of 40M%.The coal and gas outburst accdent ocured coud be effectively avoided and the standardizaion and fine of the gas drainage and outurst preventon standard evaluation work were realized,.which coud provide the demon to the coal and gas utburst acident prevention in Guizhou high outburst mine and coud have good promotion and application value.

贵州省重大应用基础研究资助项目(Z143160)；