Study on Urban Storm Water and Non-point Source Simulation under Different Development Patterns

ZHANG Bei; LI Jiake; LI Yajiao

doi:10.3969/j.issn.1003-6504.2017.08.014

Abstract：In recent years,the rapid development of urbanization has aggravated the problems of urban flood and non-point pollution.An effective and appropriate simulation model for storm water and non-point source pollution can provide a strong support for sponge city planning and construction in China.The calculation methods of typical urban storm water and nonpoint source pollution models were summarized.The simulation results of different urban development modes (traditional development,TD and low impact development,LID) were compared.Results show that LID mode has better regulation effects on urban surface runoff and water quality than TD mode.Meanwhile,the present situation and shortcomings of the simulation software were discussed.In order to improve the adaptability of the models and the accuracy of the simulation,urban storm water and non-point source pollution models need to strengthen the specific quantitative methods of simulation calculation,and take into account a variety of influencing factors and analyze the uncertainty of the simulation results.The emphasis of future research should focus on,on the macroscopic scale,the development of hydrology-hydraulics,waterwater quality coupling model should be researched,and the storm water monitoring technology should be improved and the coupling ability of 3S technology;On the microscopic scale,the process model of water and solute transport during the change of soil pore medium should be coupled.At the same time,combining with the improvement of hydrology and water quality of LID,the analysis of economic,environmental and social benefits can be conducted to provide the quantitative foundation for regional water and soil environmental protection decision.