煤矿安全2012，Vol.43Issue(6)：137-140,4.
水力冲孔强化增透松软低透突出煤层效果分析
Effect Analysis of Strengthening Permeability in Soft and Low Permeability Outburst Coal Seam by Hydraulic Flushing
摘要
Abstract
Taking Luoboan coal mine as the research background,the hydraulic flushing is used to strengthen permeability in coal seam before pre-drainage coal seam gas.In order to analyze the permeability effect of hydraulic flushing in soft and low permeability outburst coal seam,the drilling gas emission characteristics before and after hydraulic flushing,coal seam gas permeability coefficient and the differences of efficient influence radium of drillings gas drainage are analyzed and studied.The results showed that the drillings initial gas emission raised 6 times;limit gas flow of 100 m increased 46 times;the attenuation quotient of drilling gas emission reduced by 85%;the gas permeability coefficient of coal seam increased 53.48 times;the efficient influence radium of drilling raised 2 times to 3 times.关键词
水力冲孔/强化增透/透气性系数/有效影响半径/瓦斯抽放Key words
hydraulic flushing/strengthening permeability/gas permeability coefficient/efficient influence radium/gas drainage分类
矿业与冶金引用本文复制引用
范迎春,王兆丰..水力冲孔强化增透松软低透突出煤层效果分析[J].煤矿安全,2012,43(6):137-140,4.基金项目
国家科学自然基金资助项目 （）
2009年度河南省科技计划资助项目 （）
