2008 Volume 52 Pages 541-546
The erosion rate of naturally deposited cohesive sediment on river beds was investigated experimentally. In this study, we tried to establish reasonably the preparation procedure of a test sample which has almost same property of deposited cohesive sediment in an actual field of each river. After some detailed investigations about the preparation of test sample, a series of experiments were conducted in a laboratory flume in a same manner as that of our previous work. As a result of this erosion experiments, it was found that the measured data has the same tendency as that obtained by previous work.