Invited lecture: Debris flow control by a grid-type Sabo Dam

摘要

The blocking phenomena of grid-type Sabo Dam are reproduced by laboratory experiments, and a new stochastic model that fairly well explains the blockade process is obtained. This model is inserted to a computer simulation program that includes the processes of debris flow generation, development by erosion of gully bed, particle segregation during running down, and deposition upstream of a Sabo Dam. Comparisons with the experiments verified the method, and thus the performance evaluation of grid-type dam is made possible.