煤矿安全2019，Vol.50Issue(12)：23-27,5.DOI:10.13347/j.cnki.mkaq.2019.12.006
破碎压实岩体节理宏观力学参数研究
Research on Macro-mechanical Parameters of Fractured Compacted Rock Mass
摘要
Abstract
In order to solve the scientific estimation of mechanical parameters of randomly distributed joint surfaces, in the labora-tory, fractured rock blocks with different particle size gradations are selected to compress and obtain compacted solid specimens with different compaction rates; uniaxial compression experiments are carried out on compacted solid to record its axial stress-strain curves and analyze the probability distribution function and range of joint trace length; secondly, through orthogonal test and numerical simulation, the uniaxial compression numerical model was constructed, and the joint mechanical parameters of the simu-lated curve closest to the experimental axial stress-strain curve were selected as the joint mechanical parameters of the compres-sion body. Finally, the roof stability of regenerated roof roadway under different degrees of compaction is studied by using the me-chanical parameters of joints obtained from the actual site. It is concluded that the recycled roof is more stable when the particle size of the crushed rock is smaller and the compaction rate is higher.分类
矿业与冶金引用本文复制引用
王泽雨,王同旭,宋学峰,马文强..破碎压实岩体节理宏观力学参数研究[J].煤矿安全,2019,50(12):23-27,5.基金项目
山东省重点研发计划资助项目(2015GSF116012) （2015GSF116012）
山东省自然科学基金资助项目(ZR2016EEM36) （ZR2016EEM36）
