Author(s): Rabindra Osti; Shinji Egashira; Takahiro Itoh
Linked Author(s): Takahiro Itoh
Keywords: Close type check dam; Potential storage volume of check dam; Debris flow; Sediment control
Abstract: A criterion is proposed for evaluating control function for close type check dams with attention focused on potential storage volume of check dam and inflowing sediment volume. Flume tests and numerical computations were conducted for investigating change of debris flow characteristics passing through a check dam as well as for testing a validity of the criterion. The results suggest that relative outflow sediment volume can be evaluated using two non-dimensional parameters which are newly introduced and specified in terms of a potential storage volume of the check dam. The potential storage volume is determined by initial bed slope, original bed slope and equilibrium bed slope corresponding to inflowing debris flow.
Year: 2005