Numerical Simulation of Pressure Flushing Process in Sefid-Roud Dam

Use of water and soil conservation activities to control the soil erosion in Ghezel-Ozan and Shahroud
watersheds is almost infeasible and therefore the Sefid-Roud reservoir sedimentation should be
addressed by other ways. In this direction, it seems that the only applicable, successful and feasible
way is to flush the deposited sediments out of reservoir. In the present study, the filed measured data
of reservoir desiltation process are analyzed. Regarding that the numerical simulation of desiltation
process can lead to a practical way to optimize the flushing operation by adjusting the bottom outlet
gates maneuver rule, output hydrograph, reservoir water level fluctuations, in this paper a one
dimensional model has been applied to the pressure flushing process. At the end, using computed
results, some useful practical approaches to maximizing the next flushing operations are presented.