| "030704"南京市特大暴雨内涝灾害的仿真模拟 |
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| 引用本文： | 解以扬,李大鸣,沈树勤,李培彦,韩素芹,曾明剑."030704"南京市特大暴雨内涝灾害的仿真模拟[J].长江科学院院报,2004,21(6):73-76. |
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| 作者姓名： | 解以扬 李大鸣 沈树勤 李培彦 韩素芹 曾明剑 |
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| 作者单位： | 天津市气象科学研究所,天津,300074;天津大学,建筑工程学院,天津,300072;江苏省气象台,江苏,南京,210008 |
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| 摘 要： | 以城市地表与河道水流运动为主要模拟对象,以二维非恒定流基本方程为骨架,对小于离散网格尺度的排水渠涌或河道,结合一维明渠非恒定流方程的算法,设计了城市暴雨内涝数学模型,并应用于南京市.根据该市的地形、地貌及排水系统特征概化仿真系统的各类参数,对2003年7月4-5日发生在南京市的特大暴雨过程进行模拟,取得较好效果.模拟的积水误差主要分布在20 cm以内,大约占84%,但也不应忽视有11%的网格模拟的积水误差大于30 cm.
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| 关 键 词： | 暴雨内涝 仿真系统 南京市 |
| 文章编号： | 1001-5485(2004)05-0073-04 |
Mathematical Simulation of Rainstorm Waterlogging on "030704" in Nanjing City |
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| XIE Yiyang,LI Daming,SHEN Shuqin,LI Meiyan,HAN Suqin,ZENG Mingjian.Mathematical Simulation of Rainstorm Waterlogging on "030704" in Nanjing City[J].Journal of Yangtze River Scientific Research Institute,2004,21(6):73-76. |
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| Authors: | XIE Yiyang LI Daming SHEN Shuqin LI Meiyan HAN Suqin ZENG Mingjian |
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| Affiliation: | XIE Yiyang~1,LI Daming~2,SHEN Shuqin~3,LI Meiyan~1,HAN Suqin~1,ZENG Mingjian~3 |
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| Abstract: | A mathematical model describing urban rainstorm waterlogging distribution was designed by using 2D unsteady flow equations to simutate urban earth's surface and river flows and combining with 1D unstedy flow equation to simulate the flow of many secondary rivers and small channels, the dimensions in model of which are smaller than the grid ones.This model was applied to Nanjing city and different kinds of parameters in the model were simplified based on the features of the geography and urban drainage pipe systems. The simulated results are similar to real accumulated water. The errors of the former from the latter are within 20 cm(about 84%), but the error greater than 30 cm(about 11%) should not be neglected. |
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| Keywords: | waterlogging mathematical simulating system Nanjing City |
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