Design of Water Intake Head and Water Diversion Pipeline for Super Large Scale Water Intake Project
To mitigate the conflict between water resource protection and urban development,as well as to reduce the threat of saltwater intrusion into the Qiantang Riveron water intake security,Hangzhou has initiated the water intake relocation project.Considering factors such as the adjustment of waterworks layout in the main urban area of Hangzhou and accident conditions related to the Qiandao Lake water diversion project,the civil construction scale of the new water intake project is designed for a long-term capacity of 3 million m2/d,with an initial equipment installation scale of 1.7 million m3/d.According to the specialized research on the water intake of this project,the relocated water intake is situated on the south bank of Shimensha in the Fuchun River,approximately 250 m upstream from the current water intake of Xiaoshan Jiangdong.Through comprehensive selection,a box-type water intake head is chosen to effectively ensure water intake safety and reduce project investment.Considering the locations of both the water intake head and the water pumping station,the layout of the water diversion pipeline is arranged,with two DN3400 steel pipes selected based on hydraulic calculations.The entire pipeline is constructed by pipe jacking.To ensure operational safety,anti-sedimentation measures for the water diversion pipeline and protective warning facilities for the water intake head are considered in the design.
water intake relocationsuper large scalewater intake headwater diversion pipelinecross-river pipe jackinganti-sedimentation measuresprotective warning facilities
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