| In our work on sediment supply measures using flexible suction pipes, we developed the “burrowing-type sediment removal suction pipe method”， which employs a U-bend flexible pipe with a water intake at the upstream end， a permeable sheet and sediment suction holes at the bent part of the pipe. The suction pipe is initially set on the surface of deposited sediment. After the start of discharge， the pipe is expected to suck sediment and gradually burrow into the sediment using the differential water head energy. We carried out an experimental study on the sediment supply characteristics of the suction pipe using physical models and non-cohesive sediment materials. As a result of the model experiments, we confirmed that the suction pipe can supply sediment at almost the expected performance and we established the process of sediment supply and the influence of discharge rate and sediment particle size on the sediment supply characteristics. |
