Author(s): Xiang-Yang Tu, Xiao-Ming Wu, Men-Wu Wu, Yong He, Yu-Gui Yang, Zheng Zheng, Shi-You Gao, Xiao-Lei Tong
Linked Author(s): Xiangyang Tu
Keywords: Combined drainage system, sewage interception box culvert, sedimentation deposition, physical model, dredging countermeasures
Abstract: As a necessary choice for China's urban drainage system in a fairly long period, combined drainage system is an effective solution to solve the problem such as mixed underground pipe network and non-point source pollution due to dry season and light rain. Accompanied by waste water in dry season and light rain, muddy sediment and garbage can enter the sewage interception box culvert drainage system easily to produce unfavorable siltation. Based on a combined technical means including prototype data analysis, sedimentation sampling detection and reasonable simulation schemes for boundary conditions of sewage interception drainage system, a physical model was set up to study the causes and countermeasures for sediment deposition, Moreover, the feasibility of hydrodynamic and scouring sediment deposition in intercepting drainage system by dry season sewage and rainy season floods was studied with the aid of physical model experiments. Under different rainfall and flow conditions, optimal scheduling strategy of interception box culvert ware proposed for reducing sedimentation and dredging scheme. Results show that the physical model test method in this paper can be applied to sedimentation countermeasures research on similar sewage interception culvert drainage system
Year: 2017