LANDSLIDE ANALYSIS CONCEPTS FOR MANAGEMENT OF FOREST LANDS ON RESIDUAL AND COLLUVIAL SOILS

A forest land management analysis scheme is discussed for dealing with landslides that occur in residual and colluvial soils. No one geotechnical or statistical model can be expected to apply to all levels of land management where an assessment of the potential for landslide is vital to a rational decision-making process. The U.S. Department of Agriculture Forest Service in cooperation with the University of Idaho is developing a scheme for evaluating soil-mantle landslide potential to provide information at three levels of land management activities: (a) resource planning; i.e., relative landslide hazard evaluation for resource allocation; (b) project planning; i.e., evaluation of management impacts for comparing alternate transportation routes and timber harvest techniques; and (c) road design and landslide stabilization; i.e., evaluation of alternate road stabilization techniques at a specific critical site. Both geotechnical and statistical analysis techniques are advocated so that the information can be in geotechnical form (factor of safety against failure or critical height of slope) or in statistical form (probability of landslide occurrence) with landslide inventories used as a link between the two. A hypothetical example of the three-level analysis is given. (Author)

Media Info

  • Media Type: Print
  • Features: Figures; Maps; References; Tables;
  • Pagination: pp 27-36
  • Monograph Title: Evaluating strength parameters of simple clays: geotechnical consideration of residual soils
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00382934
  • Record Type: Publication
  • ISBN: 0309036070
  • Files: TRIS, TRB
  • Created Date: Apr 30 1984 12:00AM