煤样重量对钻屑瓦斯解吸指标(△h_2)的影响程度研究  

Research on the Influence of Coal Sample Weight on the Gas Desorption Index of Drill Cuttings

作　　者：李国红[1] 王兆丰[1] 陈向军[1] 

机构地区：[1]河南理工大学安全科学与工程学院,河南焦作454000

出　　处：《煤》2011年第8期1-3,20,共4页Coal

基　　金：国家自然科学基金资助项目(50974056);河南省重点攻关资助项目(092102310037)

摘　　要：在现场打钻测定钻屑瓦斯解吸指标时,取得的10 g煤样中混有少量矸石或其它钻孔深度的煤样是常见现象,矸石的瓦斯解吸量与原煤的瓦斯解吸量差别很大,而混入其它钻孔深度的煤样等于瓦斯提前解吸;这两种影响因素必然会使测值变小,导致瓦斯突出危险预测结果背离实际,文章根据实验数据,分析煤样重量对钻屑瓦斯解吸指标测定准确率的影响程度,得出测定煤钻屑瓦斯解吸指标(△h2)时,合理的煤样重量的取值范围。When measured △h2,It is a common phenomenon mixed with a small amount of recrement,or other drilling depth of the coal samples in the 10 grams of coal sample,the gas desorption are very different between raw coal and recrement,mixed with other drilling depth of the coal samples equivalent desorption of gas in advance;these two factors will make the measured values smaller,lead to gas outburst prediction deviate from the actual.In the article,according to the experimental data,analysis of the influence of coal sample weight on the gas desorption index of drill cuttings,obtain a reasonable range of weight of coal samples.

关 键 词：钻屑瓦斯解吸指标 煤样重量 影响程度 

分 类 号：TD712[矿业工程—矿井通风与安全]