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 a single chamber settling basin using the following data: design discharge=15 m³/sec; particle size to settle ≥0.2 mm; particle fall velocity=0.02 m/sec; factor of safety for basin area=1.5; length to breadth ratio=8; sediment concentration=1 kg/m³; density of sediment particles=2,500 kg/m³; settling time of sediment particles=8 hours, sediment packing factor=0.5; additional discharge for flushing=10%. [8]