采矿与安全工程学报Issue(1)：27-34,8.DOI:10.13545/j.cnki.jmse.2016.01.005
深部软岩巷道锚注支护机理数值模拟研究
Numerical simulation research of bolt-grouting supporting mechanism in deep soft rock roadway
摘要
Abstract
Grouting test equipment for cracked rock mass has been developed independently, and grouting reinforcement test has been done on cracked rock mass. Mechanical characteristics and micro-structure of cracked rock before and after grouting reinforcement have been explored. Concept of“equivalent layer of bolt-grouting reinforcement”has been proposed. Mechanism of bolt-grouting supporting in deep soft rock roadway has been studied with the method of FLAC3D. Influence of dis-placement and plastic zone under different thickness, elastic modulus, cohesion and internal friction an-gle of bolt-grouting reinforcement equivalent layer has been revealed. The paper has shown that as the parameter of the equivalent layer of bolt-grouting reinforcement improves, plastic zone and displace-ment of roadway surrounding rock have reduces, which has reflected that the grout can improve the in-tegrity and strength of cracked rock mass. Research has laid a foundation for parameter optimization design of bolt-grouting supporting.关键词
深部/软岩巷道/锚注支护/FLAC3D数值模拟Key words
deep/soft rock roadway/bolt-grouting supporting/FLAC3D numerical simulation分类
矿业与冶金引用本文复制引用
孟庆彬,韩立军,乔卫国,林登阁,李浩..深部软岩巷道锚注支护机理数值模拟研究[J].采矿与安全工程学报,2016,(1):27-34,8.基金项目
国家自然科学基金项目(51579239，51574223)；中国博士后科学基金项目(2015M580493，2014M551700，2013M531424)；山东省土木工程防灾减灾重点实验室开放课题项目(CDPM2014KF03)；中国矿业大学深部岩土力学与地下工程国家重点实验室开放基金项目(SKLGDUEK1305) （51579239，51574223）
