水力化措施条件下工作面突出预测指标K_1临界值修正研究  

Critical Value Correction of Outburst Prediction Index K_1 under Condition of Hydraulic Measures

作　　者：卿启超 李秋林 吕贵春 刘辉辉 

机构地区：[1]贵州煤矿安全监察局遵义监察分局,贵州遵义563000 [2]中煤科工集团重庆研究院有限公司,重庆400037

出　　处：《矿业安全与环保》2015年第4期56-58,共3页Mining Safety & Environmental Protection

摘　　要：基于钻屑瓦斯解吸指标K1值与瓦斯压力的相关关系,推算了煤样正常含水率条件下K1临界值为0.5 m L/(g·min1/2)时所对应的瓦斯压力;在实验室内试验测定了不同瓦斯压力、不同含水率条件下的K1值,并分析了其随煤体含水率的变化规律。研究表明,利用K1值与瓦斯压力的相关关系、K1测定值与含水率的相关关系,可对采取了水力化措施条件下煤层突出危险性局部预测指标K1临界值进行修正。Based on the correlation of the gas desorption index of drill cuttings K1 and gas pressure,the corresponding gas pressure under the normal moisture condition and when the critical value of K1 is 0. 5 m L /（ g·min1 /2）was calculated. In the laboratory,K1 values were measured under the conditions of different gas pressures and moistures,and the change law of the critical value of K1 with the coal moisture was analyzed. The research showed that the critical values of the local prediction index K1 for coal seam outburst hazard can be corrected by the correlation of the K1 values with the gas pressure and the coal moisture when the hydraulic measures were taken in the outburst coal seams.

关 键 词：煤与瓦斯突出预测 煤体含水率 钻屑瓦斯解吸指标 临界值 修正 

分 类 号：TD825[矿业工程—煤矿开采]