抄録
A simulation model of debris depositing was built basing on the Random Walk Model. This is done on an alluvial fan consisting mainly of debris from the debris flows and traction. The purpose of this study is to forecast the deposit area of the debris.
This digital model consists mainly of the following three factors:
1. Calculation of the debris volume which will be supplied to a fan surface.
2. Debris deposits through debris flow.
3. Debris deposits through traction.
The Osawa Fan, located at th foot of Mt. Fuji and the fan along Katorea-sawa in Mt. Usu are the test fields in this study. According to the results of correlation, the debris flows using this simulation model resemble to the real flows. This suggests that the simulation model can be effectiue preventing the disastrous debris flowing, which is one of the serious problem in Japan.
