2004 UC Proceedings Abstract
 Quantitative Slope Stability Mapping With ArcGIS: Prioritize Highway Maintenance Track: Transportation Author(s): Pankaj Bhattarai, Binod Tiwari, Hideaki Marui, Kiyomichi Aoyama Use of GIS in hazard zonation mapping is popular. However, quantitative hazard assessment is still not well practiced. ArcGIS was used to calculate the safety factor of the slopes along 14 km highway stretch of Nepal that used to be closed for several weeks in rainy season every year due to landslides. Automated 3D FOS (factor of safety) of the slope, calculated by using ArcGIS extensions, was used to prepare roadside protection priority map for the studied stretch. Input of soil test data, geological distribution, hydrological information and topographical information with automated algorithm to estimate realistic slope instability coefficient was the basis for the preparation of roadside maintenance priority map. Likewise, average FOS along each slope unit of the streams was used to predict the bridges and other cross drainages structures at danger. The roadside maintenance and bridge protection priority map is a handy tool for the highway maintenance authorities in developing countries. Pankaj Bhattarai Research Institute for Hazards in Snowy Areas, Niigata University Igarashi 2-8050 Niigata , Niigata 950-2181 JP Phone: 81-25-262-7053 E-mail: bhattaraipankaj@hotmail.com Binod Tiwari Virginia Polytechnic Institute and State University Civil and Environmental Engineering 1826 Grayland St. Apt. 1 Blacksburg , VA 24060 US Phone: 1-540-231-6121 E-mail: tiwari@vt.edu Hideaki Marui Research Institute for Hazards in Snowy Areas, Niigata University Niigata University Igarashi 2-8050 Niigata Niigata , Niigata 950-2181 JP Phone: 81252627055 Fax: 81252627050 E-mail: maruihi@cc.niigata-u.ac.jp Kiyomichi Aoyama Research Institute for Hazards in Snowy Areas, Niigata University Niigata University Igarashi 2-8050 Niigata Niigata , Niigata 950-2181 JP Phone: 81252627053 Fax: 81252627050 E-mail: aoyamak@gs.niigata-u.ac.jp |
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