义安矿二1煤层突出预测敏感指标及临界值研究  

Study on sensitive index and critical value for outburst prediction of No.21 coal seam in Yi’an Mine

作　　者：黄晶晶 肖健 Huang Jingjing;Xiao Jian(School of Safety Engineering,North China Institute of Science and Technology,Yanjiao 101601,China)

机构地区：[1]华北科技学院安全工程学院,北京东燕郊101601

出　　处：《煤炭与化工》2020年第6期103-108,共6页Coal and Chemical Industry

基　　金：中央高校基本科研业务基金(3142015020)。

摘　　要：为了防止煤与瓦斯突出事故,2019新颁布的《防治煤与瓦斯突出细则》要求突出矿井应建立具有针对性的突出预测指标及其临界值。本文依据现场考察数据,绘制了义安矿二1煤层11040上巷、12090工作面、12140轨道及12150工作面的钻孔瓦斯涌出初速度q和钻屑量指标S、钻屑量解吸指标K1和钻屑解吸指标△h2测值分布曲线,使用"三率"分析法确定了义安矿业二1煤层突出预测敏感指标及临界值,即q和△h2可做为主要敏感指标,同时建议S或K1做为辅助敏感指标。临界值分别为q=5.0 L/min,△h2=200 Pa,S=6 kg/m,K1=0.5m L/(g·min1/2)。对该矿井二1煤层的实际防突工作起到了一定的参考作用。In order to prevent and control coal and gas outburst accident,the regulation on prevention and control of coal and gas outburst which issued in 2019,required the establishment of specific outburst prediction indexes and critical values for outburst mines.Based on the field tracking and investigation of the predictive indicator data,the change curve of initial gas gushing velocity q and cuttings quantity index S,cuttings quantity desorption index K1 and cuttings desorption index of borehole△h2 at 11040 upper roadway,12090 working face,12140 track and 12150 working face of Yi’an mine were analyzed,and finally the method of combining qualitative and quantitative analysis was adopted to determine the outburst prediction sensitive index,and determine the critical value of sensitive index by"three rate"analysis method,q and△h2 can be used as the main sensitive indicators;At the same time,S or K1 were suggested as auxiliary sensitive indicators.The critical values were q=5.0 L/min,△h2=200 Pa,S=6 kg/m,K1=0.5 m L/(g·min1/2).It can be used as a reference for the actual outburst prevention work of the coal seam in the mine.

关 键 词：敏感指标 临界值 三率分析法 

分 类 号：TD713[矿业工程—矿井通风与安全]