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The factors that impacted hydraulic vulnerability of water distribution system are discussed, and a quantitative hydraulic vulnerability and risk assessment model is presented in this paper. In this model, EPANET is employed as the hydraulic solver of water networks and Monte-Carlo stochastic simulation is incorporated for randomly generating failure scenarios of both pipes and water plants. Finally,...
On the basis of previous studies, the water quality and hydraulic reliability of water distribution system was analyzed. Then the calculation models of the hydraulic and water quality reliability are established. Finally, a simulated municipal water distribution system is taken as the example to validate the rationality and feasibility of the models. The results show that the models established in...
City water demand of new area in 2020 is forecasted on the basis of water resources optimized allocation. According to the real situation, regional water supply system is fixed on new area. Optimized path of the main pipes spanning different areas of new area is confirmed and optimized mathematical model of new area is set up. Finally, Methods of Matlab GA Toolbox are used to solve the model and results...
Risk assessment is applied to the study of urban waterlogging. A series of methods which are suitable for the risk study of urban waterlogging are presented. Based on the hydraulic model built by InfoWorks Collection System software, the situation of normal state/ pump failure under special return period is simulated. Also, the seeper depth and recoverability theory are selected as the quantitative...
The ldquoyellow waterrdquo phenomenon often appears when desalinated seawater entered the old ferruginous water supply systems. Therefore, different tubing water pipe-nets were used to simulate the desalinated seawater distribution process, change of water quality between raw water and pipe water was analyzed as well as the mechanism of ldquoyellow waterrdquo phenomenon. Also, the control indexes...
System dynamics (SD) approach for developing zone water demand forecasting was developed based on the analysis of its water resources system which has multi-feedback and nonlinear interactions amongst system elements. As an example, Tianjin Binhai Linkong water resource system dynamic (SD) model was set up according its dual water supply feasibility and necessary and different quality water demand...
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