Summary of research on flood discharge and energy dissipation of high dams in China

China is now experiencing a fastigium period for hydropower development and dam construction.Many problems come across in practice of dam building have accelerated development and advancement of dam hydraulics.This paper presents a summary comment on research progress in the flood discharge and energy dissipation of high dams in the country.The main content includes four aspects: flood discharge and energy dissipation in high arch dams;energy dissipation by hydraulic jump in stilling basin with high head and large flow rate;spillways and flood tunnels,and atomization due to flood discharging.After reviewing the research achievements,some suggestions for the high-dam flood discharge and energy dissipation are proposed in terms of further development,environmental impacts and operation and supervise of hydraulic structures.