Abstract: Collapsible loess is a typical problematic soil which is very sensitive to the moisture content. The collapsible loess slopes are widely distributed in Shanxi, and geological hazards are frequently occurred. This paper presents the stability evaluation and remediation results of a failed loess slope in Linxian County, Shanix Province. A geotechnical investigation program was conducted at the failed slope site. It is evident that the intrinsic strength of the loess slope weakened by the infiltration of surface water from the precipitation. The failed slope was analyzed by using Huaning Geotechnical Engineering software and the remediation scheme was then proposed. The case history indicates that the proper drainage system is critically important for the stability of the loess slopes.

Key words: Collapsible Loess, Landslide Remediation, Geologic Hazards