水利水电技术2018，Vol.49Issue(3)：17-25,9.DOI:10.13928/j.cnki.wrahe.2018.03.003
基于SWMM的中尺度雨水系统构建下的水质水量模拟
SWMM-based simulation on water quality and water quantity for construction of mesoscale rainwater system
摘要
Abstract
In order to construct the mesoscale rain system,the SWMM models for the rainwater systems of both the simple type and the disconnection type are respectively established in accordance with the relevant in situ monitoring and investigation data on the basis of the original rainwater systems concerned by taking a low-rent housing residential sub-district (about 2 hm2) in Nanchang of Jiangxi Province as the study area,and then the surface runoff therein is analyzed,while the process of pollutant-diffusion along with runoff is simulated based on the four kinds of pollutants,i.e.TSS,TP,TN and CODcr.The result shows that compared with the conventional development under the condition of a return-period of three years,the simple type of rainwater system can reach the target of no water-logging within a period of five years,while the reducing rate of the surface runoff is to be smaller and smaller along with the increase of the return-period.Meanwhile,the disconnection type of rainwater system cannot only ensure that no water-logging occurs within a period of ten years and the changing trend of runoff reduction accords with that of the simple type as well as the runoff reduction is better than that of the simple type,but can also delay the occurrence of the runoff peak for a much longer time.Along with the increase of the return-period,the concentration of pollutant gradually increases in the earlier-phase,peaks in the meta-phase and gradually decreases in the later-phase with more and more obvious scouring effect.Compared with the conventional development,the pollutant reducing effects of the both types of rainwater system can reach to over 50％.However,no matter whether the simulation of water quality or the hydrological simulation,it is indicated that due to the saturation of soil,the effects of both of the rainwater systems are basically the same under the condition of a high return-period,but the disconnection type of rainwater system can generally control the flowrate of runoff and the runoff pollutants much better.关键词
中尺度雨水系统/SWMM/水质模拟/水量模拟Key words
mesoscale rainwater system/SWMM/water quality simulation/water quantity simulation分类
资源环境引用本文复制引用
肖存艳,傅春,詹健..基于SWMM的中尺度雨水系统构建下的水质水量模拟[J].水利水电技术,2018,49(3):17-25,9.基金项目
江西省研究生创新专项资金项目“建设生态海绵城市——城市水系对雨水资源化利用研究”(YC2015-S014) （YC2015-S014）
江西省水利厅科技项目(KT201232) （KT201232）
南昌大学研究生创新专项资金项目(CX2012073) （CX2012073）
