RTRI REPORT February 2001

Study on Evaluation of Danger of Rock Falls Based on Field Surveys and Digital Elevation Models

Takehiro OHTA, Hideo KIYA, Satoshi MORI


  The evaluation methods for danger of disaster by rock falls are examined based on field surveys, multivariate analyses and geomorphometric measures along railway lines in the Shikoku region. The results of the field survey and the multivariate analysis show the items required for field surveys of rock falls. The geomorphometric parameters are calculated by geomorphometric measures by using digital elevation models (DEMs). A comparison between the geomorphometric parameters with the results of the multivariate analyses shows that the combination of these parameters can predict the danger of rock falls.


* Full papers of RTRI Report are written in Japanese.

Copyright (c) 2001 Railway Technical Research Institute