重庆大学学报Issue(1)：72-78,7.DOI:10.11835/j.issn.1000-582X.2016.01.010
穿层钻孔煤巷条带水力压裂防突技术及应用
Hydraulic fracturing technology by drilling through strata for outburst prevention in coal roadway strips and its application
摘要
Abstract
To realize regional gas control in a low permeability coal roadway strip,based on the features of high pressure water,we proposed a hydraulic fracturing technology of drilling through strata in coal roadway strip to prevent outburst by applying the elastic theory.We built a calculation model for coal seam initiation pressure is established,developed a device to export flow rates and pressure,and applied them to an industrial experiment.The experiment results show that concentration and quantity curves of gas drainage in fracturing borehole exhibit characteristics of “high-low-high”,which reflects the dual role of hydraulic fracturing.Gas quantity in fracturing boreholes is 20 times and 133 times of those of hydraulic cutting boreholes and ordinary crossing boreholes,respectively.When residual gas content of a coal roadway strip is reduced to 8 m3/t,the elimination effect of the hydraulic fracturing technology of drilling through strata is outstanding.关键词
水力压裂/煤巷条带/瓦斯突出/瓦斯抽采Key words
hydraulic fracturing/coal roadway strip/gas outburst/gas drainage分类
矿业与冶金引用本文复制引用
袁志刚,任梅清,沈永红,王宏图..穿层钻孔煤巷条带水力压裂防突技术及应用[J].重庆大学学报,2016,(1):72-78,7.基金项目
湖南科技大学博士科研启动基金（E51502）；重庆大学煤矿灾害动力学与控制国家重点实验室资助项目（DA201404）；南桐矿业有限责任公司科研项目（2014-01）。Supported by Doctoral Scientific Research Foundation of Hunan University of Science and Technology （E51502），Project of State Key Laboratory of Coal Mine Disaster Dynamics and Control （DA201404）and Nantong Mining Co．，Ltd．Research Project （2014-01）． （）
