Reconnaissance geophysical methods in landslide investigations

摘要: Abstract Landslides are a natural hazard in many countries and often affect civil engineering structures projects. Three aspects particular require examination geotechnical appraisal of landslide's stability terms: (1) the definition its three-dimensional shape with reference to shear surfaces failure planes; (2) hydrogeological regime regard water input landslide distribution within slip mass; (3) detection movement by or mass characterisation such movements. The site investigation costs may be very high since landslides extremely large, structurally complex topographically severe. It is therefore advantageous suitable circumstances carry out reconnaissance geophysical surveys define structure guide optimum siting boreholes pits, ultimately installation piezometers, inclinometers etc. Standard surface techniques including seismic, electrical resistivity, acoustic emission borehole methods have all been applied varying success look at before major commences. In recent years electromagnetic subject considerable research this field significant advances made. paper, application above stage has reviewed illustrated several case histories taken from different geological settings.