Engineering Geological Studies along the Tinpiple Banchare Dada Road, Central Nepal

概要

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The Tinpiple-Banchare Dada road is located northwest of the Kathmandu valley. Since the area is a mountainous terrain consisting of varieties of slopes, development activities may be threatened by landslide related phenomena. Recently, Kathmandu Metropolitan City (KMC) and Ministry of Local Development are jointly constructing the access road (Tinpiple-Banchare Dada Road) for the mobilization of the solid wastes collected from the KMC. It is, therefore, desirable to have engineering geological studies along the road alignment. This paper describes the methodology used in preparing the engineering geological map along the road. The purpose of the present study was to prepare an engineering geological map along the road alignment and to determine the geotechnical properties for both rocks and soils. For these purposes, the required attributes for engineering geological studies were identified and are mapped in the field. Soil and rock samples were analyzed for different engineering parameters. Results reveal that the most part of the road is aligned through the completely weathered sandstone, its residual soil along with the gneisses. The result reveals that areas with 3-6 meter thick soil may be hazardous in terms of landslides and should be avoided, if possible.
琉球大学理学部の論文