EXPERIMENTAL STUDY ON THE EROSION RATE OF NATURALLY DEPOSITED COHESIVE SEDIMENT ON RIVER BEDS

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.