ABSTRACT

A GIS-based approach for regional assessment of seismic instability of rock slopes is developed. In the proposed approach, the rock slope landslides induced by an earthquake is assumed to occur in planar failure mode.A rigorous Newmark's analysis is integrated with a GIS to predict seismically induced slope deformation based on the planar failure mode. For utilizing more precise Digital Elevation Model (DEM) with small size grid cells, a new technique is presented to generate slope models based on inclined planar discontinuities in a DEM coverage. This allows a more reliable assessment of earthquake-induced displacements of rock slopes on a regional scale. Application of the approach is limited to areas in which seismic failure of rock slopes occurs along planar discontinuities.

Keywords:
grid cell, plane failure, discontinuity, geological discontinuity plane, displacement, assessment, plane, inclination, geological discontinuity, Bray
Subjects:
Information Management and Systems
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2012. Taylor & Francis Group. Permission to Distribute - International Society for Rock Mechanics.
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