煤矿安全2024，Vol.55Issue(6)：126-133,8.DOI:10.13347/j.cnki.mkaq.20231252
非煤保护层工作面能量应力演化规律及顶底板结构对强矿震的影响
Study on energy stress evolution law of non-coal protective layer working face and effect of roof and floor structure on strong mine earthquake
摘要
Abstract
Protective seam mining is widely used as an effective method for preventing and controlling rock burst,the protective lay-er itself also has the risk of strong mine earthquake and rock burst.Taking the protective seam of the oil shale working face in Haishiwan Coal Mine,which encountered with the strong mining earthquake during the mining process,as the engineering back-ground,the focal mechanism and main control factors of the strong mining earthquake were analyzed through numerical simulation and theoretical analysis.The research results show that the strong mining earthquake in the oil shale working face are mainly caused by compression shear failure under stress concentration.The mining of the protected coal seam working face has a more significant impact on the stress and energy distribution in the floor strata of the protected seam.There are significant influences on the occur-rence of strong mine earthquake events,such as hard roof strata,thin rock strata on floor and thickness variation between protective layer and protected layer.关键词
油页岩工作面/保护层开采/强矿震/冲击地压/岩层结构Key words
oil shale working face/protective seam mining/strong mine earthquake/rock burst/rock structure分类
矿业与冶金引用本文复制引用
张田录..非煤保护层工作面能量应力演化规律及顶底板结构对强矿震的影响[J].煤矿安全,2024,55(6):126-133,8.基金项目
国家自然科学基金资助项目(51974302) （51974302）
国家重点研发计划资助项目(2022YFC3004605) （2022YFC3004605）
