潜行吸引式排砂管の土砂輸送特性と管損失の評価

抄録

The authors have been developing a new sediment discharge countermeasure method which is a “burrowing type sediment removal suction pipe method” using the water head energy difference between the upstream and downstream areas of a dam. In this study, we have carried out a sediment discharge laboratory experiment to confirm effectiveness of the sediment concentration measurement system, an evaluation of the pipe loss, and the sediment discharge characteristics of a 300mm pipe. As a result, it is confirmed the system can measure detail sediment concentrations, and the detail pipe loss coefficient and sediment slurry transportation characteristics were found by the system. The burrowing type sediment removal suction pipe method will be expected to one of the effective sediment discharge technology.