Rahughat Hydroelectric Project is an ROR （run of river） project with the installed capacity of 40 MW. The suspended sediment study was carried out in 2008 and 2015 AD. The present study is concentrated on the study ...Rahughat Hydroelectric Project is an ROR （run of river） project with the installed capacity of 40 MW. The suspended sediment study was carried out in 2008 and 2015 AD. The present study is concentrated on the study carried out in 2015 AD. The suspended sediment samples were collected in the headworks site and its analysis was done in Hydro Lab Pvt. Ltd. Concentration analysis, PSD （particle size distribution） analysis and mineral content analysis were carried out. The minimum and maximum sediment concentration is 54 PPM and 3,759 PPM respectively. The PSD analysis shows that 52% of the suspended sediment contained sand fraction and 48% is fine sediments. The mineral content analysis shows presence of quartz, feldspar, mica, kyanite, garnet, carbonates, chlorite, clay and some fragments of shale, phyllite and slate with few unidentified sediments. The proposed desander in RGHEP is designed to settle particles of size 0.2 mm and above. The sediments lesser than 0.2 mm size that reach the turbine may affect the loss of turbine material due to erosion.展开更多
文摘Rahughat Hydroelectric Project is an ROR （run of river） project with the installed capacity of 40 MW. The suspended sediment study was carried out in 2008 and 2015 AD. The present study is concentrated on the study carried out in 2015 AD. The suspended sediment samples were collected in the headworks site and its analysis was done in Hydro Lab Pvt. Ltd. Concentration analysis, PSD （particle size distribution） analysis and mineral content analysis were carried out. The minimum and maximum sediment concentration is 54 PPM and 3,759 PPM respectively. The PSD analysis shows that 52% of the suspended sediment contained sand fraction and 48% is fine sediments. The mineral content analysis shows presence of quartz, feldspar, mica, kyanite, garnet, carbonates, chlorite, clay and some fragments of shale, phyllite and slate with few unidentified sediments. The proposed desander in RGHEP is designed to settle particles of size 0.2 mm and above. The sediments lesser than 0.2 mm size that reach the turbine may affect the loss of turbine material due to erosion.
