1. Mine Safety Technology Branch,China Coal Research Institute,Beijing　 100013,China;2. State Key Laboratory of Coal Mining and Clean Utilization (China Coal Research Institute),Beijing　 100013,China;3. Beijing Mine Safety Engineering Technology Research Center,Beijing　 100013,China

以平朔矿区露天井工协调开采工程实践为背景,采用物理模拟与数值分析相相结合的方法,分析了采动边坡的变形破坏特征与应力分布规律,揭示了"关键硬岩层"与"关键弱层"耦合作用下采动边坡的变形破坏模式与典型失稳机理,提出了采动边坡变形破坏演化的四阶段理论,即表生改造、结构改造、时效变形和最终失稳(稳定),建立工程力学模型,推导出了采动边坡进入时效变形和最终失稳(稳定)阶段的判据。

Based on the open-pit and underground mining engineering practice in Pingshuo mining area,the physical simulation and numerical analysis were combined to investigate the deformation-failure characteristics and stress distri- bution rule of mining slope. Therefore,the deformation-failure mode and the typical instability mechanism of mining slope under the coupling effects of key hard strata and key weak strata were revealed. A four-stages theory of deforma- tion and destruction of mining slope was put forward,including epigenetic recreation of rockmass structures stage, structure transformation stage,time-dependent deformation stage and eventually unstable (stable) stage. Then the en- gineering mechanics model was established. The criterion of mining slope into the time-dependent deformation stage and eventually unstable (stable) stage were deduced.

国家自然科学基金资助项目(51004065,51404139)；煤炭科学技术研究院有限公司科技发展基金资助项目(2016JC10)；

Ding Xinpin,Wang Zhenwei,Li Wei. Dynamic process and typical deformation-failure mechanism of mining slope[ J]. Journal of China Coal Society,2016,41(10):2606-2611.