黑龙江科技学院学报2013，Vol.23Issue(3)：258-262,267,6.DOI:10.3969/j.issn.1671-0118.2013.03.010
半煤岩巷道围岩破裂演化规律及控制技术
Failure evolution laws and control technology of roadway surrounding rock
摘要
Abstract
Aimed at addressing surrounding rock control of half coal rock roadway,this paper drawing on the main haulage roadway of a colliery' s half coal rock in Liüliang mining area describes the development of three-dimensional numerical model of roadway by a numerical simulation software FLAC3D,the analysis of the laws governing the plastic zone of the roadway surrounding rocks occurring in the different buried depth,and the fine detection of failure radius of roadway surrounding rock by borehole imaging instrument.The results suggest a gradual increase in the plastic zone of surrounding rocks,especially in two sidewalls and floor of the roadway,depending on the increase in buried depth; the occurrence of the extremely well-developed fractures near surrounding rocks ranging from 0 m to 1.8 m and from 4.9 m to 5.1m in depth ; and the occurrence of many micro cracks from 1.6 m to 5.1 m in depth.The numerical simulation and precise detection reveal the necessity of the whole section bolting-grouting support method consisting of grouting cable,grouting bolt,and metal mesh.The field monitoring shows that this method,capable of an effective restraint of the harmful deformation of roadways,could serve as reference guide for roadway support for similar conditions.关键词
半煤岩/破裂演化规律/控制技术/精细探测Key words
half coal rock / failure evolution laws / control technology / elaborate probe分类
矿业与冶金引用本文复制引用
张华磊,王连国,涂敏..半煤岩巷道围岩破裂演化规律及控制技术[J].黑龙江科技学院学报,2013,23(3):258-262,267,6.基金项目
国家重点基础研究发展计划(973计划)项目(2010CB226805) （973计划）
国家自然科学基金项目(51074004) （51074004）
安徽省自然科学基金重点项目(11040606M102) （11040606M102）
安徽理工大学青年教师科学研究基金项目(2012QNZ14) （2012QNZ14）
