露天矿滑动面主要由软弱结构面受剪切所造成,有些滑动面也常常包含着非弱面的原岩剪断面。近一百多年以来,滑面上的岩体力学指标一直沿用库仑强度准则,亦即τ=fσ+c (1) 式中:f=tanφ为摩擦系数; The surface of the open pit is mainly caused by shearing of the weak structural surface, and some of the sliding surfaces often contain the original rock-sheared section of the weak surface. Nearly a hundred years, the sliding surface mechanical indicators of rock mass have been using Coulomb strength criterion, which is τ = fσ + c (1) Where: f = tanφ is the friction coefficient;