知识与财富的链接
1 Introduction Rock slopes usually contain many jointed surfaces such as joint fissure. When subject to water seepage, the jointed surfaces will induce many geologic disasters such as land- slide and mudflow, and these will do great loss to the national economic development. Therefore, it is very important to deeply understand the mechanism of these disasters. Site observations and analysis on the landslide show that water is one of the key factors to induce landslide[1―8]. All methods calcu…
Three-dimensional discrete element face-to-face contact model with fissure water pressure is established in this paper and the model is used to simulate three-stage process of landslide under fissure water pressure in the opencast mine, according to the actual state of landslide in Panluo iron mine where landslide happened in 1990 and was fathered in 1999. The calculation results show that fissure water pressure on the sliding surface is the main reason causing landslide and the local soft interlayer weakens the stability of slope. If the discrete element method adopts the same assumption as the limit equilibrium method, the results of two methods are in good agreement; while if the assumption is not adopted in the discrete element method, the critical φ numerically calculated is less than the one calculated by use of the limit equilibrium method for the sameC. Thus, from an engineering point of view, the result from the discrete element model simulation is safer and has more widely application since the discrete element model takes into account the effect of rock mass structures.