Reservoirs are critical infrastructure in water conservancy

playing an indispensable role. However

sedimentation reduces effective storage capacity

impairs functional performance

and shortens service life

thereby introducing significant operational risks. Focusing on the risks and management of reservoir sedimentation

this study analyzes the current situation and associated risks in China

summarizes key technologies including hydraulic sediment flushing and mechanical dredging for storage restoration

and refines their respective application scopes

operational conditions

and integrated approaches for synergistic sediment reduction. The study further identifies the challenges facing future reservoir desilting and emphasizes the necessity of integrating sediment removal with sediment resource utilization

optimized reservoir operation

and comprehensive watershed-level sediment control. It proposes the establishment of an integrated technical system that combines hydraulic flushing and mechanical dredging

aiming to reduce desilting frequency and economic costs

and to fundamentally resolve sedimentation problems in reservoirs.