REMEDIATION MEASURES ON THE LANDSLIDE IN FILL SLOPES IN NORTH-EAST PART OF PANZHIHUA AIRPORT

Panzhihua airport was constructed in an area with complicated topographical and geological conditions and therefore involved a large amount of excavation and filling works. At present, the settlement and landslide in filled land and slopes are substantial and cause the many problems for safe and smooth operation of the airport facilities. This paper presents the basic characters and causes of the landslides in the fill slopes. Based on the back-analysis and trial results, the paper ascertains the shear strength parameters at the shear plane of the slope deformation, and analyses the sensitivity that the shear strength parameters can make for the changes of the slope stability. Furthermore, on the basis of the landslide thrust calculation, the paper contrasts and demonstrates each remediation measure, and establishes a comprehensive remediation scheme which includes anti-slide piles, prestressed ground anchors with reinforced concrete beams on the surface, trimming back slopes and provision of surface drainages.