Types of cutslope failures along Shiyan-Manchuanguan expressway through the Liangyun fracture,Hubei Province

摘要

The Shiyan-Manchuanguan expressway is an important section of the Yinchuan-Wuhan inter-provincial Expressway. The road must go through different geological structure units and Liangyun Fracture.Owing to the unique geological conditions and high-steep cut slopes,slope deformation and failure have sofrequently happened in the course of construction as to build up serious pressure and threaten to the normalconstructing and traffic safety after completing. Through lots of field investigation and study,the slope defor-mation and failure mainly are two types: landslide and dilapidation. The landslides occur usually in interbedbetween soft rock and hard rock. The rainstorm between May and October is the peak of slope deformation andfailure. In order to relieve or prevent the economic losses caused by the geologic hazards,the paper studied themechanisms of different landslides.