Geo‐integrated assessment of the landslide zone around Gadora along NH 58 of the Garhwal Himalayas, India

Abstract

The Gadora village landslide zone situated along National Highway 58 has become very active in recent years. The landslide zone is causing a lot of damage to property along the highway and endangering the lives of people living uphill and downhill of the slopes. In the present study, a combined geological, geophysical and geotechnical investigation has been carried out to establish the subsurface layering system of the landslide. Undisturbed and disturbed samples were collected along the depth of the boreholes to determine the engineering properties of different layers. The subsurface layering and drainage patterns of the slope were inferred from electrical resistivity tomography conducted at different stretches of the slope. The present paper describes the layering system along with the engineering and physical properties obtained from the integrated geo-investigation. The established near-surface geometric, hydrological and material model enabled the stability study of the slope.

Stability Analysis of Geotechnical Landslide Based on GA-BP Neural Network Model

“…The EM-DAT catastrophe database estimates that 8,658 persons perished as a direct result of landslide activity throughout the globe during 1990 and 1991 [ 1 ]. “The Durham Fatal Landslide Database” (DFLD) database indicates that the death toll from landslide events between 1980 and 2000 was about 72,000 worldwide, or about 3,400 per year, a figure that is considered a significant underestimation of landslide hazard outcomes because the underreporting of small events (events with very low mortality rates) and events that occur in very remote areas keeps the count far below the actual number [ 2 ]. Landslide geological disasters are widely distributed in my country.…”