CE 704 · Chapter 5
Hydropower Engineering past question
5.4 Sediment Handling measures: Methods of bed load and suspended load handling in RoR headworks, Design of settling basin (Particle and concentration approach), Estimation of sediment volume in Settling basin, Flushing of deposited sediment, estimation of frequency of flushing
Design the settling basin from the particle size and concentration approach and calculate the trap efficiency from the following data. (Refer figure 3 & 4): Design discharge=80 m³/s; Installed capacity of the plant=110 MW; Particle size to be removed=0.2 mm; Flushing discharge=1 m³/s; Number of basin=2; Water temperature=12°C; Manning's constant (n)=0.01 (If flushing system is continuous). Assume other necessary data if needed. If the flushing system is changed to intermittent with single basin what are the changes, describe with suitable reason. [8]