抄録
In order that Sedimentation in a dam reservoir may invade dam capacity, the countermeasure against the sedimentation is indispensable to the maintenance and improvement in the function of a dam. Authors have examined Hydro-suction Sediment Removal System (HSRS) as a countermeasure against sedimentation in dam reservoir. However, if the deposition becomes deep, soil and sand may not collapse by the effect of arch-action. Then, authors proposed Vertical multi-hole suction pipe method (VHMS) which has arranged the suction hole perpendicularly in order to promote soil and sand collapse, when deposition is deep. This research examines the performance of VMHS by model experiment.
