Research on stability of a slope due to underground mining
Research on stability of a slope due to underground mining作者机构：Mine Safety Technology Branch China Coal Research Institute Beijing 100013 China State Key Laboratory of Coal Mining and Clean Utilization (China Coal Research Institute) Beijing 100013 China Mid-South Design and Research Institute CHEC Changsha 410014 China China Institute of Water Resources and Hydropower Research Beijing 100048 China
出 版 物：《Journal of Coal Science & Engineering(China)》 (煤炭学报（英文版）)
年 卷 期：2013年第19卷第4期
页 面：474-482页
学科分类：081901[工学-采矿工程] 0819[工学-矿业工程] 08[工学] 080104[工学-工程力学] 0815[工学-水利工程] 0801[工学-力学（可授工学、理学学位）]
基 金：Supported by the National Natural Science Foundation of China for Youth (51004065) the National Basic Research Program of China (2012CB724208)
主 题：underground mining stability of slope numerical modeling strength reduction technique monitoring
摘 要：This paper will present a detailed analysis of the deformation mechanism and stability assessment of the slope through field investigations, numerical modeling and measurements. Field investigation indicated that three thin coal seams encountered large mined-out area at one side and free surface of hill slope at the other side, which lead to the caving of roof strata movement, ground movement and crown crack along the preferred orientations of joints. The three-dimensional numeri- cal modeling study on the case demonstrated that the plasticity failure occurred gradually along with the extension of mined-out area in depth. When the depth of mining reached the verge defined by the seismic prospecting method, a large mount of tension failure occurred on the crown of the slope. The factor of safety was 1.36 calculated by the shear strength reduction technique, which indicated the slope was in stable state. The measurement showed that the residual deformation occurred before 1998 and became stable subsequently, which indicated that the residual deformation almost finished and the slope is in stable state.
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