Analysis and Comparison on the Flood Simulation in Typical Hilly & Semi-mountainous Region

[摘要] Water-logging and flood are both serious in hilly and semi-mountainous cities of China, but the related research is rare. Lincheng Economic Development Zone (EDZ) in Hebei Province as the typical city was selected and storm water management model (SWMM) was applied for flood simulation in this study. The regional model was constructed through calibrating and verifying the runoff coefficient of different flood processes. Different designed runoff processes in five-year, ten-year and twenty-year return periods in basic scenario and in the low impact development (LID) scenario, respectively, were simulated and compared. The result shows that: LID measures have effect on peak reduction in the study area, but the effectiveness is not significant; the effectiveness of lagging peak time is poor. These simulation results provide decision support for the rational construction of LID in the study area, and provide the references for regional rain flood management.

[发布机构] School of Water Conservancy and Hydroelectric Power, Hebei University of Engineering, Handan; 056021, China^1;Research Center for Water Ecological Civilization and Social Governance of Hebei Province, Handan; 056021, China^2;Department of Water Resources, Institute of Water Resources and Hydropower Research, Beijing; 100038, China^3;Public Utilities Department, Norendar International Ltd, Shijiazhuang; 050011, China^4

[关键词] Decision supports;Economic development;Low impact development;Mountainous cities;Mountainous regions;Rational construction;Runoff coefficients;Stormwater management model(SWMM)