低渗煤层突出预测敏感指标及其临界值研究  

Study on Sensitive Index and Critical Value of Low Permeability Coal Seam Outburst Prediction

作　　者：赵东 ZHAO Dong(Tenth Mine of Pingdingshan Tian'an Coal Industry Limited Company,Pingdingshan 467013,China)

机构地区：[1]平顶山天安煤业股份有限公司十矿,河南平顶山467013

出　　处：《煤矿现代化》2025年第3期112-116,122,共6页Coal Mine Modernization

摘　　要：为了确定平煤股份十矿戊10、戊11煤层突出预测敏感指标及临界值,通过分析煤层瓦斯压力和含量对应关系、瓦斯吸附常数及突出指标,考察分析、模拟计算煤体初始瓦斯解吸量、钻屑瓦斯解吸指标、钻屑解吸指标敏感性与临界值等具体参数,分别确定了戊10、戊11煤层突出危险性敏感指标及临界值。研究结果表明:戊10、戊11煤层突出危险性预测敏感指标临界值分别为瓦斯压力0.6、0.43MPa,对应瓦斯含量均为6.0 m^(3)/t;钻屑量指标S的临界值为4.8 kg/m(4.3L·m^(-1))、钻屑瓦斯解吸指标△h_(2)的临界值为180 Pa(湿煤样140 Pa)、钻孔瓦斯涌出初速度q的临界值为4.0 L/min。以上研究结果确定的突出预测敏感性指标及临界值符合矿井实际情况,可以作为矿井防突工作的重要依据。In order to determine the sensitive index and critical value of outburst prediction of pent10 and pent11 coal seams in Pingmei Dijir10 Mine,specific parameters such as initial coal gas desorption amount,drilling cuttings desorption index,sensitivity and critical value of drilling cuttings desorption index are investigated,analyzed and simulated by analyzing the corresponding relationship between coal gas pressure and content,gas adsorption constant and outburst index.The sensitive indexes and critical values of outburst risk of pen10 and pen11 coal seams are determined respectively.The research results show that the critical values of sensitive indexes for prediction of outburst risk of coal seams in pent10 and pent11 are 0.6 MPa and 0.43 MPa respectively,and the corresponding gas content is 6.0 m^(3)/t.The critical value of drilling cuttings quantity index S is 4.8 kg/m(4.3 L·m^(-1)),the critical value of drilling cuttings gas desorption index △h_(2) is 180 Pa(140 Pa for wet coal sample),and the critical value of drilling gas emission initial velocity q is 4.0 L/min.The sensitivity index and critical value of outburst prediction determined by the above research results accord with the actual situation of mine,and can be used as an important basis for mine outburst prevention work.

关 键 词：突出预测 敏感性 吸附常数 钻屑瓦斯解吸 临界值 

分 类 号：TD713[矿业工程—矿井通风与安全]