Abstract

Rock mass characteristics are the key internal factors for the stability of high rock slope. The lithological association of rock mass and its structural planes, such as dominant orientations, length, fracture aperture and stiffness attenuation, is investigated by exploration methods. Quantitative description is performed in terms of fracture geological and dynamic parameters to provide necessary basic data for the stability of rock slope. Based on rock mass with different geological characteristics on one site in the Songjiang area, Shanghai city, the fracture mechanism is studied using strength reduction finite element method. The different associations of the stiffness of rock mass and the dip of its structural planes are processed in dynamic state and its effects on the safety factor of rock slope are discussed.

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