Performance Evaluation of the Hydro-suction Chamber Method in Sediment Removal of Reservoirs

Siphon sediment dredging methods to solve the problem of sedimentation tanks have been widely studied in recent decades. These methods do not have some disadvantages, such as excess energy, stopping tank utilization, waste water, sediment drainage over lower carrying capacity, etc. In this article we tried to make a hydro-suction compartment with U-shaped bend and determining the lateral distribution of pressure inside it. We found the appropriate place for creating suction holes at the bottom of compartment and thanks to centrifugal force and secondary current escalation we could increase the Sediment Removal Efficiency. The study of library resources shows that the reinforcement of the secondary flow in a U-shaped bend with an abrupt opening with the aim of Sediment Removal of reservoirs has not been investigated.