水利学报2023，Vol.54Issue(11)：1347-1358,12.DOI:10.13243/j.cnki.slxb.20230172
城市更新的雨洪过程动态响应模拟研究——以银川市为例
Simulation study on dynamic response of rain and flood process in urban renewal:A case study of Yinchuan City
摘要
Abstract
During the process of urban development and renewal,the transformation of local areas can significantly affect both surface runoff and underground drainage processes.In this paper,the numerical model of coupling hydrological and hydrodynamic processes is applied,and the southern Xixia District and the northern Jinfeng Dis-trict of Yinchuan City are taken as the renewal areas of the old city and the new city,respectively.The results showed that renovating the rainwater and sewage systems in the old urban area significantly reduced surface inunda-tion and prevented pipe blockages.Different renovation schemes(Area 1,Area 2,and Area 3)resulted in a re-duction of surface waterlogging ranging from 25.06％ to 49.63％ compared to the pre-renovation period.The per-centage of time that pipes were filled with water after peak flow and 3 hours of recession was reduced by 1.51 to 2.39 and 1.32 to 2.66 times(1≤P≤5)compared to before the renovation.In the new urban area,the expansion of resi-dential areas(0.56％,0.30％,and 0.19％)had a greater impact on surface inundation and rainfall runoff control as the rainfall recurrence interval increased.However,when P=20,the percentage of increased internal inundation after renovation was higher than before,but the rate of increase slowed down.The longer the rainfall return period,the greater the parabolic constant value.Therefore,the study emphasizes the importance of considering the impact of local changes on the overall rain and flood process in the region,achieve that effect of nip in the bud.关键词
耦合模型/城市更新/旧城改建/雨污分流/新城扩建/雨洪响应Key words
coupling model/urban renewal/old city reconstruction/rain and sewage diversion/new city expan-sion/rain and flood response分类
建筑与水利引用本文复制引用
李欣怡,侯精明,潘占鹏,景静,樊超,孙学良..城市更新的雨洪过程动态响应模拟研究——以银川市为例[J].水利学报,2023,54(11):1347-1358,12.基金项目
中德合作交流项目(M-0427) （M-0427）
国家自然科学基金项目(52079106,52009104) （52079106,52009104）
