Landslide Investigation Utilizing Electric Cone Penetration Testing

by Jim French, Alan Kropp & Associates,
Alan Kropp, Alan Kropp & Associates,

Document Type: Proceeding Paper

Part of: Use of In Situ Tests in Geotechnical Engineering


A geotechnical investigation was conducted of landsliding at a hillside residential property to evaluate both the extent of the landslide and the stability of the fill materials as well as to provide recommendations for remedial work to stabilize the property. Conventional techniques were used to explore the site but were supplemented with cone penetration testing. The cone penetration work was performed to help locate the thin landslide slip planes and to evaluate the quality of the fill material present. By comparing the information from the conventional soil borings with the data from the cone penetration tests the primary slide plane was found, additional potential slide planes were located, patterns of subsurface variation were determined, and variability of individual lifts of fill materials was discovered.

Subject Headings: Penetration tests | Fills | Landslides | Sliding effects | Soil properties | Material properties | Material tests | Case studies

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