Landslide Evaluations

Landslides, including rock falls, rotational slumps, translational block slides, debris flows, and complex earth movement, can cause extensive damage. Landslide evaluations are performed by our engineering geologists and geotechnical engineers to evaluate existing or potential landslides for planning and design considerations and to develop stabilization techniques.

Landslide evaluations involve:

• Review of topographic maps and stereoscopic aerial photographs
• Geologic mapping and field documentation of landslide features such as ground cracking, headscarps, grabens, pressure ridges, joints and fractures, and seepage
• Subsurface exploration to evaluate landslide geometry, material types, and rupture surfaces
• Installation, monitoring and analysis of slope inclinometers
• Geologic modeling to perform slope stability analysis
• Landslide and slope stabilization design measures, including earth buttresses, shear pins, rock bolting, in-situ soil improvement, and dewatering
• Construction monitoring and geologic evaluation during landslide stabilization