Influence of depth-thickness ratio of mining on the stability of a bedding slope with its sliding surface in concave deformation
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- 作者：Yuning Zhang ; 743139009@qq.com" class="auth_mail" title="E-mail the corresponding author ; Jianxin Tang ; Guodong Li ; Junyang Teng
- 关键词：Depth-thickness ratio ; Bedding slope ; Sliding surface ; Concave deflection surface ; Mining influence ; Similar simulation
- 刊名：International Journal of Mining Science and Technology
- 出版年：2016
- 出版时间：November 2016
- 年：2016
- 卷：26
- 期：6
- 页码：1117-1123
- 全文大小：1841 K
文摘
In order to study the influence of depth-thickness ratio on bedding slope stability, whose sliding surface is flexural concave in shape under mining conditions, this paper aims to study the characteristics of deformation and damage of bedding sliding with depth-thickness ratios of 200:1, 150:1, 120:1, 100:1 and 50:1 by adopting numerical simulation analysis software combined with laboratory-made “under the influence of mining variable sliding surface slope similar simulation test bed”, and to propose identification methods for slope stability under the influence of mining. The results show that mining activities under the slope reduce slope stability. With a decrease in the mining depth ratio, the influence of mining on the slope increases gradually, and the damage to the slope gradually expands, the stability of the slope gradually reduces, fracture occurs on the slope toe and the central fissure gradually develops to the surface, and reaches slide threshold when the depth-thickness ratio is 50:1.