ABSTRACT
Compared with hydropower, road and railway projects, open pit slope engineering has its own unique characteristics. During the decades of exploitation Services, the overall slope mine gradually formed. Its stability is a key technical factor influencing mine safety from start to end. Along with the increase of mining depth, slope increased gradually, effect of unloading is more pronounced, failure probability is growing (Zhang et al. 2010). There are many factors affecting the stability of slope. Rock body of structure type, and structure surface of spatial composing relations is the key to internal based, especially with the same tendency of slope along the consequent structure surface, which is the controlling factors of slope stability. And extended hundreds of meters of consequent fault also should get attention, this tertiary structure surface is relatively small, and it is often neglected in the geological prospecting, but small landslide is enough to destroy the transportation system of open pit mine.
