矿山边坡稳定性分析及其工程应用

Stability analysis of the mineral mountain slope and its engineering application

边坡发生破坏失稳是一种复杂的地质灾害过程,由于边坡内部结构的复杂性和组成边坡岩石物质的不同,需采用不同的分析方法及计算公式来分析其稳定状态.运用Bishop和Janbu极限平衡方法,结合永平铜矿露天边坡地质特征,在岩体物理力学性能试验基础上,以2个典型坡面为例,得到边坡稳定的最小安全系数,完成稳定性评价并提出采取削坡、预应力锚索、锚喷网支护等加固治理方案.

The destruction of the side slope and its loss of stability is a kind of complex geological calamity course. Because the complexity of side slope internal structure and the difference of the materials composing the side slope rock, different analysis methods and calculating formulas should be adopted to analyze its stable state. This paper applies Bishop and Janbu ultimate balance method, taking the Geological feature of Yongping copper mine as and examlpe. On the basis of the physical and mechanical property of the two typical slopes the stable minimum assuring factor is obtained and stability appraise is done. At the same time, the schemes of reinforcing, such as cutting slope, prestressed anchor, and anchor spray support and so on, are presented.