辽宁工程技术大学学报（自然科学版）2025，Vol.44Issue(5)：528-537,10.DOI:10.11956/j.issn.1008-0562.20250022
覆岩离层注浆弱化顶板型防冲机理研究
Research on the mechanism of impact prevention through roof weakening by overburden separation layer grouting
摘要
Abstract
In order to explore the influence of overburden bed separation grouting on rock burst prevention,the theoretical and practical methods are used to analyze the characteristics of strata movement and spatial structure distribution of overlying strata under the condition of overburden bed separation grouting,and to explain the control effect of overburden bed separation grouting on rock burst.The research results indicate that the filling of overburden strata separation grouting can increase the interaction among the surrounding rocks in the local separation space,forming an effect of"downward pressure+upward support".On one hand,it alters the movement of local key strata and their energy accumulation.On the other hand,it controls the distribution of the overall overburden spatial structure and its load transfer.These jointly constitute the main principles and forms of the rockburst prevention mechanism of roof weakening by overburden strata separation grouting.Through the mining practices of working faces without and with overburden strata separation grouting filling,by comparing the monitoring indicators of rockburst such as stress,micro seismic activity,and drill cuttings volume at the same stage during the mining process,it was found that in the working face with separation grouting,the fracture height and energy level of micro-seismic events,the stress range and peak value,as well as the drill-cuttings volume all showed a significant downward trend,demonstrating a good rockburst prevention effect.The research conclusions provide reference for the research and practice of anti-impact in filling mining.关键词
覆岩离层注浆/冲击地压/顶板/覆岩空间结构/微震监测/应力监测/监测对比Key words
overburden strata separation grouting/rockburst/roof/spatial structure of overburden/rock microseismic monitoring/stress monitoring/monitoring comparison分类
矿业与冶金引用本文复制引用
年宾,张宇,张明,王卫,魏凯祥,朱海虎,袁飞,李达明..覆岩离层注浆弱化顶板型防冲机理研究[J].辽宁工程技术大学学报（自然科学版）,2025,44(5):528-537,10.基金项目
国家自然科学基金项目(52104114) （52104114）
中勘资源勘探科技股份有限公司-安徽理工大学联合博士后科研项目(HX20240014) （HX20240014）
