ABSTRACT
The Mohr-Coulomb failure criteria is adopted in the traditional method of slope stability limit equilibrium the safety coefficient is calculated according to the balance of power. An artificial steep shale slope was excavated where it is in the bottom of a high slope for the need of coefficient foundation and sump construction in Geheyan hydraulic power station. The height of slope is 50 m, the slope angle is 50 degrees and the angle of its bench up to 70 degrees which exceeds the stable standard for shale rocks. The Mohr-Coulomb failure criteria is adopted in the traditional method of slope stability limit equilibrium the safety coefficient is calculated according to the balance of power. Growth dynamic model of Verhulst thinks that anything has the same process of happening, developing and decline, and the loss of slope stability has the same process.
