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Citation |
Wagner A, Olivier R, Leite E. Transp. Res. Rec. 1987; 1106: 255-267. |
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Copyright |
(Copyright © 1987, Transportation Research Board, National Research Council, National Academy of Sciences USA, Publisher SAGE Publishing) |
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DOI |
unavailable |
PMID |
unavailable |
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Abstract |
A discussion is provided of rock and debris slide risk mapping along low-volume road corridors in the foothills of Nepal. First, the results of a data compilation of the main factors leading to the failure of rocky and semi-rocky terrains are described. This research was conducted in Nepal on over 100 rock and debris slides. These data were developed into a rock and debris slide risk mapping method that was experimented with success along 300 km of road corridor sections in Nepal. The method is based on a superimposition of the geological, morphostructural, and slope maps of the road corridor in association with "weights" in percent to the most relevant factors leading to failure. The initial results are of a computerized risk mapping system that was applied to low-volume roads in mountainous developing countries. Because the initial data compilation revealed the structural factor to be a very crucial one, a test of a computerized structural risk map was operated on an already mapped road project section. This test was found to be consistent with the original risk map and revealed, with more accurate limits, similar locations of the risk areas in which slides actually occurred as predicted. Other advantages of the computer map are the systematic aspect of the process and the simulation flexibility of the unique parameters according to the observed field data and the local imposed conditions. Language: en |
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Keywords |
LANDSLIDES; DATA PROCESSING - Natural Sciences Applications; RISK STUDIES; ROADS AND STREETS - Structural Analysis |