摘要
传统暴雨淹没分析算法中,给定水位下的积水淹没分析算法需要已知积涝水位,但是在实际降雨中积涝水位获取存在一定难度;已知洪水体积的积涝扩散算法虽然算法简单、计算速度快,但是未突破汇水区边界限制。针对传统淹没分析算法存在的不足,从有源扩散的角度出发,提出了一种水量动态分配的有源积水扩散算法,从而提高了暴雨积水模拟的准确性。以漳州市龙文区为例,选取了2016年6月15日的降雨进行验证,结果与实测结果基本一致。
The urban storm flood analysis is of great significance to the study of numerical simulation of urban storm waterlogging.In the traditional urban storm flood analysis algorithm,given waterlogging level is essential for urban storm flood analysis,but the waterlogging level is difficult to be obtained in real situation.The waterlogging diffusion algorithm with given water volume is simple and quick to calculate,but tlie catchment area has a boundary.To overcome these deficiencies,an active waterlogging diffusion algorithm with dynamic distribution of water volume in waterlogging is proposed from the perspective of active diffusion.This algorithm improves the accuracy of storm waterlogging simulation.Taking Longwen District of Zhangzhou City as an example,the precipitation on June 15,2016 was used to validate the algorithm.The results are consistent with themeasured results.Therefore,it can be concluded that this algorithm is effective and accurate.
作者
薛丰昌
黄敏敏
唐步兴
XUE Fengchang;HUANG Minmin;TANG Buxing(College of Remote Sensing and Mapping Engineering,Nanjing University of Information Science&Technology,Nanjing 210044,China;Key Laboratory Meteorological Disaster,Ministry of Education,Nanjing University Information Science&Technology,Nanjing 210044,China)
出处
《气象科学》
北大核心
2018年第5期674-680,共7页
Journal of the Meteorological Sciences
基金
江苏省自然科学基金资助项目(BK20151458)
江苏省博士后科研基金(1101024B)
江苏省研究生科研创新计划项目(KYCX17-0891
KYCX17-0890)
关键词
城市内涝
积涝模拟
算法
Urban waterlogging
Dynamic diffusion
Algorithm