Three-dimensional Critical Slip Filed Of Slope Stability Analysis And Its Application

Side slope is a complicated systematic engineering. It's stabilization directly concerns economic benefit and environmental safety. So it's very important to analyze, evaluate and forecast the stability of side slope. And the precision of analysis depends mainly on the goodness of fit between calculation method and failure mode, which mostly finds expression in two aspects, one is the difference between the simplified model and real failure mode, the other is the veracity of critical slip surface. Planar simplification is widely adopted in current research, but the real failure mode of landslide is three-dimensional. So it becomes the mainly task that how to efficiently implement the three-dimensional analysis of slope stability. This paper is engaged in searching and computing the critical slip filed under the three-dimensional failure mode. The main contents of this paper are as follows:1. Researched the existing approaches of slope stability analysis and presented a three-dimensional critical slope field approach which based on symmetrical failure mechanism. Analyzed the failure mode, force transferring mechanism and corresponding theory of computation.2. Established the searching and analyzing system of the three-dimensional critical slip field, which is demonstrated to coincide with the facts.3. Worked out the back analysis and optimum design considering the engineering geologic condition, geological structure and the coefficient of slope stability.4. Achieved the three-dimensional data analysis, and excogitated three-dimensional stability analysis system using Vc++ and OpenGL technology.5. Analyzed the stability of BuZhaoBa slope and accomplished the optimum design by using those research productions above combine with the engineering geologic condition, monitoring data and exploitation scheme.