ABSTRACT
Slope stability is normally influenced by many factors such as the properties of the slope rock structure and its structural planes, surface water, ground water, undertaken actions, slope height, slope ratio and the pertinence of the adopted treatment measures, the sequence, procedure, measures and details of slope construction. The evaluation of the slope stability by an approximate model is only the reference for the slope design. High steep slopes of hydropower projects in China are characterized with complex geological conditions and large scale. On the basis of slope rock mass quality grading, stable classification of slope engineering is an important method for slope stability evaluation. Slope failures have caused serious damage to human lives and properties. During construction of a slope, the geological mechanical model should be improved according to the actual geological conditions, the stability of the slope should be reevaluated by using measured data, and the design parameters and the construction scheme is optimized when necessary.
