The Elastic-Plastic Finite Element Model Of The Slope Stability Analysis And Application

A elastic-plastic finite element model for stability analysis of the high steep rock slope is set up based on Drucker-Prager yield criterion and uses ANSYS software to make a concrete analysis of the high steep rock slope stability in Changba open-pit mine. Two situations are considered in the following: 1. The stability of slope with fault in the effect of underground water and blasting dynamic. 2. The stability of slope without fault in the effect of underground water and blasting dynamic. The slope stability in above-mentioned two kinds of situations compares with only in the gravity situation. The results indicate the displacement, stress and strain agree with the common rule the engineering excavation later and reflect the following aspects concretely: 1. Displacement fields demonstrate the top of the slope is large, the under parts is small. 2. There is very obvious concentration for stress and strain fields in the middle-under parts of the slope border and the fault. 3. Plastic strain concentrates on the slope border and the fault and there is obvious plasticity especially in the effect of gravity, groundwater and blasting dynastic, nearly have phenomenon of linking up. Strength reduction finite element method r is utilized to calculate the safety factor of the slope, sum up and find: 1. Compare between slope with fault and slope without fault: the safety factor of the former is less than the latter. That the whole stability of the latter is better than the former prove the existence of fault plays a very important role on a slope itself stability. 2. That the safety factor is little only in the effect of the gravity, less in the effect of the blasting dynastic, the lest in the effect of the blasting dynastic and groundwater, prove...