Abstract:The Dagu River Inverted Siphon Hub is a key structure of the Yellow River Diversion to Qingdao Project, which carries important functions such as water diversion and regulation, flood control and discharge, and supporting surrounding traffic demands. Taking the emergency repair and reinforcement project of the Dagu River Inverted Siphon Hub as the background, this paper focuses on the scheme comparison, dimension design, connection and installation, and impound test of inverted siphon pipelines, presents the technical parameters for overflow dam design and construction, and puts forward the layout method of safety monitoring facilities. It summarizes management experience in overall scientific planning, team organization, responsibility division and risk control for emergency repair and reinforcement projects. The practice has achieved good effects and can provide references for similar projects.