北京师范大学学报（自然科学版）2024，Vol.60Issue(3)：375-385,11.DOI:10.12202/j.0476-0301.2023251
考虑空间异质性特征的城市洪涝动态风险分析
Dynamic risk of urban flooding/waterlogging with attention to spatial heterogeneity of the underlying surface
摘要
Abstract
Frequent urban flooding/waterlogging is a major challenge to society and economics.Accurate estimation of flood risk is important to improve urban flood control and drainage capacity,in the downtown area of Jincheng city in Shanxi province.A SWICA model was developed in this work to simulate flooding/waterlogging.A risk assessment framework was proposed from multi-source data,both subjective and objective comprehensive weighting were used,to analyze the dynamic flood risk of various rainfalls with different return periods.The volume of water in the pipeline network was close to capacity with the return period of 20 years,the drainage capacity of the pipeline network system was insufficient when the return period of rainfall was greater than 20 years.With increased rainfall return period,risk areas in downtown was found to gradually increase,mostly concentrated in areas along roads,intersections of street and the area with dense development.In southeastern downtown area,flooding/waterlogging risk increased significantly from 1 to 5 years of return periods.The area with high risk increased significantly with increased return period,by 224.614 hm2 from 1 to 100 years of return period.Under the same return period of rainfall,the area with high and higher risk mostly concentrated in the central downtown area with dense development.With high vegetation coverage and relatively high elevation,the northeastern downtown area was with low risk.关键词
城市洪涝/危险性/SWICA/动态风险/晋城市Key words
urban flooding/waterlogging/dangerous/SWICA/dynamic risk/Jincheng city分类
水利科学引用本文复制引用
舒心怡,徐宗学,†叶陈雷,廖如婷,黄亦轩,王京晶,贾书惠..考虑空间异质性特征的城市洪涝动态风险分析[J].北京师范大学学报（自然科学版）,2024,60(3):375-385,11.基金项目
国家自然科学基金重点资助项目(52239003) （52239003）
粤港水安全保障联合实验室开放基金资助项目(GHJLWS-08) （GHJLWS-08）
