康永德,李伟,许尔文,任小凤

• 1:兰州理工大学
• 2:甘肃省祁连山水源涵养林研究院
• 3:中国水利水电科学研究院内蒙古阴山北麓草原生态水文国家野外科学观测研究站

摘要(Abstract)：

【目的】为探明海绵措施对降雨径流的削减效果和污染物削减能力，以固原市23 km~2海绵试点区为研究对象，模拟不同重现期下海绵措施实施前后降雨径流及污染物的变化规律。【方法】采用高精度地形、GPU加速技术，构建适用于固原市洪涝模拟的水文水动力模型。【结果】结果表明：(1)不同降雨情景下，实施海绵措施后，年径流控制率提高16%～20%,污染物削减率均在98%左右。(2)降雨雨型对径流总量控制率影响明显，小雨量时，大部分降雨被留在当地。(3)模型模拟结果为海绵措施布置提供了指导依据，2号积水点建议布设路旁植草沟和渗井，以减少主干道往该处汇流的水量；3号积水点建议完善排水管网；6号积水点建议布设植草沟及滞留溏；10号积水点建议在西侧主干道布设生态植草沟、透水性路面。【结论】构建了适用于固原市的洪涝模型，可实现海绵措施布置对降雨径流和污染物削减率的模拟，为该城市雨洪管理和城市规划提供了科学依据。

关键词(KeyWords)： 水文水动力模型;海绵措施;降雨;污染物削减;径流控制率

Abstract:

Keywords:

基金项目(Foundation): 甘肃省自然科学基金青年基金(22JR5RA282);; 甘肃省青年科技基金计划项目(20JR10RG824);; 甘肃省高端外国专家引进计划项目(22JR10KA026);; 国家自然科学基金(52079106);; 内蒙古阴山北麓草原生态水文国家野外科学观测研究站开放研究基金(中国水利水电科学研究院)(YSS202304);; 甘肃省祁连山水源涵养林研究院博士后科研工作站专项

作者(Author): 康永德,李伟,许尔文,任小凤

DOI: 10.13928/j.cnki.wrahe.2024.02.007

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