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A platform for research: civil engineering, architecture and urbanism
Evaluation of design approaches of desilting basins for hydroelectric projects in Himalayan region
The present paper aims to evaluate the empirical as well as analytical approaches normally adopted for the computation of desilting efficiency of pressure type desilting basin used in hydroelectric project (H.E.P) constructed in Himalayan regions. Due to limited availability of space and steep topography, pressure type desilting basins are mostly preferred. Four significant projects in the Himalayan region are chosen for the performance analysis of desilting chamber: Kholongchhu H.E.P, Mangdechhu H.E.P, Teesta Stage-IV H.E.P, and Punatsangchhu Stage-II. Theoretical efficiency (function of shear velocity (µ*) and mixing coefficient (ℇ)) of all the four projects were computed by existing as well as modified formulae as suggested by Camp-Dobbin (1946) and Sinha and Singh (2019), respectively. It is concluded that particle removal efficiency obtained from model studies for these four hydropower projects and that computed by Camp-Dobbin’s approach (1946) are in close agreement. The outcome of this paper suggests that out of six commonly used approaches, the approach recommended by Camp-Dobbin (1946) is most suitable methodology to design the desilting basin in Himalayan region. It is envisaged that the present study will enable the designer to select a most appropriate approach to design an efficient and suitable desilting basin for construction in Himalayan region.
Evaluation of design approaches of desilting basins for hydroelectric projects in Himalayan region
The present paper aims to evaluate the empirical as well as analytical approaches normally adopted for the computation of desilting efficiency of pressure type desilting basin used in hydroelectric project (H.E.P) constructed in Himalayan regions. Due to limited availability of space and steep topography, pressure type desilting basins are mostly preferred. Four significant projects in the Himalayan region are chosen for the performance analysis of desilting chamber: Kholongchhu H.E.P, Mangdechhu H.E.P, Teesta Stage-IV H.E.P, and Punatsangchhu Stage-II. Theoretical efficiency (function of shear velocity (µ*) and mixing coefficient (ℇ)) of all the four projects were computed by existing as well as modified formulae as suggested by Camp-Dobbin (1946) and Sinha and Singh (2019), respectively. It is concluded that particle removal efficiency obtained from model studies for these four hydropower projects and that computed by Camp-Dobbin’s approach (1946) are in close agreement. The outcome of this paper suggests that out of six commonly used approaches, the approach recommended by Camp-Dobbin (1946) is most suitable methodology to design the desilting basin in Himalayan region. It is envisaged that the present study will enable the designer to select a most appropriate approach to design an efficient and suitable desilting basin for construction in Himalayan region.
Evaluation of design approaches of desilting basins for hydroelectric projects in Himalayan region
Goel, Arun (author) / Thakare, Aditya (author) / Verma, M.K. (author) / Qamar, M.Z. (author)
ISH Journal of Hydraulic Engineering ; 30 ; 122-131
2024-01-01
10 pages
Article (Journal)
Electronic Resource
English
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