Abstract: Geological conditions in mountain areas are more complex than in plain areas for the engineering constructions. The geological structure, stratum lithology and engineering slope stability will potentially affect the building foundation types and engineering cost. This paper presents a case history of a building site investigation and treatment in Emeishan City. The following aspects are evaluated: (1) Based on the plane distribution of the fill soil and fault fracture zone, the influence of stratum lithology on the foundation uniformity and foundation type selection are analyzed and evaluated. The corresponding control measures are proposed in the paper. (2) Based on the spatial distribution of the fault fracture zone, the influence on the area stability, site seismic effect, foundation uniformity and foundation type selection are analyzed and evaluated. (3) Based on the survey results, the overall planning and design, slope stability are analyzed and evaluated, and corresponding suggestions on control measures are recommended.

Key words: Building Sites in Mountain Areas, Geotechnical Uniformity, Fault Fracture Zone, Constructed Slope