文档介绍：Limit equilibrium Method (LEM) Advantage of LEM Limitation of LEM Numerical modeling Advantage Limitation STABILITY ANALYSIS OF SLOPE 2 Software based on Limit equilibrium Method SLIDE ( rocscience group) GALENA GEO-SLOPE GEO5 GGU SOILVISION 3 Software based on Numerical modeling PHASES2 PLAXIS FLAC-SLOPE / UDEC / PPF ANSYS FEFLOW GEOSLOPE/SIGMA SOIL-VISION 4 Required input properties Young modulus Poisson ratio Density Failure criterion: M-C H-B Cohesion UCS Friction angle m & s Numerical modeling Type of failure mechanism Physico -mechanical behaviour of slope material Types of analysis 6 Numerical modeling ? Continuum modelling FEM, BEM and FDM ? Discontinuum modelling DEM, UDEC ? Hybrid modelling PPF, 7 What are the conditions of slope in the field ? Simple slope with single, two or three joints ? Large number of joint sets present in the slope ? Heavily jointed rock slope ? Waste dump / very weak rock / soil 8 ? Simple slope with single, two or three joints ? large number of joint sets present in the slope ? Heavily jointed rock ? Waste dump / very weak rock / soil ? Properties of each Joints strength ? Properties of each joint set or combined properties ? Properties of jointed rock mass ? Properties of waste rock 9 Continuum modelling Continuum modeling is best suited for the analysis of slopes that are comprised of massive, intact rock, weak rocks, and soil-like or heavily jointed rock masses. Discontinuum modeling is appropriate for slopes controlled by discontinuity behaviour. Critical Parameters: shear strength of material, constitutive criteria, water condition, insitu stress state Advantages: Allows for material deformation and failure, plex behaviour, pore pressures, creep deformation and/or dynamic loading can be simulated Limitation