Study on the impact of hydraulic characteristics of new stilling pool in the context of energy conservation, emission reduction, and green construction.

This article focuses on the hydraulic characteristics and energy dissipation performance of a shared stilling pool in a double-discharge hydropower structure under uneven flow distribution, studied through physical hydraulic model testing. It identifies key issues in the original design, including uneven flow patterns, insufficient water jump, and vortex formation, and evaluates three improvement schemes incorporating splitter walls, arc-shaped flip piers, and baffle blocks. Among these, the scheme using baffle blocks (C scheme) most effectively reduces bottom flow velocity, weakens vortices, stabilizes the water surface profile, and enhances energy dissipation rates. The findings provide technical guidance for designing shared stilling pools in hydropower projects aligned with carbon neutrality goals, though further research on additional dissipation methods is recommended.