煤岩体水力致裂弱化技术及其进展  

Technology of Coal-Rock Mass Hydraulic Fracture Weakening and Its Development

作　　者：黄炳香[1] 邓广哲[2] 刘长友[1] 

机构地区：[1]中国矿业大学煤炭资源与安全开采国家重点实验室,江苏徐州221008 [2]西安科技大学能源学院,西安710054

出　　处：《中国工程科学》2007年第4期83-88,共6页Strategic Study of CAE

基　　金：教育部博士点基金项目(20050290503);中国矿业大学青年科研基金项目(2005A001)

摘　　要：针对煤矿开采中坚硬顶煤(板)冒落性差的问题,讨论了煤矿生产中由此产生的顶煤放出率、冲击矿压、自燃发火和瓦斯积聚等技术难题;分析了坚硬顶煤(板)水力致裂弱化技术的岩体水力致裂裂缝扩展行为规律、渗透压力对裂隙岩体宏细观结构的改造作用及其宏观力学响应,水压裂缝扩展形态控制技术,钻孔封孔技术和岩体水力致裂弱化的监测监控的研究现状和技术发展趋势。Technologic problems of top coal recovery ratio, rock burst, coal spontaneous combustion and gas accumulation induced by hard top-coal or roof＇s fall in coal mining were introduced. Current research and development trend of hydraulic fracture weakening for hard top-coal or roof was analyzed, including the law of crack expanding induced by hydraulic fracture in rock mass, mescoscopic structure alteration of cracked rock mass by seepage pressure and its macroscopic mechanics response, controlling technology of hydraulic crack＇s expanding, the technology of enveloping drillbore and weakening effect monitoring.

关 键 词：坚硬顶煤(板) 水力致裂 裂缝扩展 细观结构 

分 类 号：TD823[矿业工程—煤矿开采]