广州市猎德涌内涝模拟与成因分析
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摘要
以广州市天河区猎德涌排涝片区为研究对象,针对区域内存在的典型内涝黑点,初步研究了城市发展过程中的河道演变和下垫面变化情况。构建一维河网、二维漫流和一维管网的水动力数学耦合模型,模拟区域内的排水过程。采用该模型分析下垫面、河道和排水管网过流能力对内涝黑点的积水影响,提出相应的解决措施。研究结果表明,在城市化的进程中,区域原有水系对城市排涝具有关键影响,应重点保护原有水系格局,恢复相应的排涝能力。
The evolution of the watercourse and the change of the underlying surface in the process of urban development are studied in order to analyze the causes of the typical waterlogging black spots in the Liedechong waterlogging area. The coupled one-dimensional river network, two-dimensional groundwater flow and one-dimensional pipe network model are constructed to simulate the drainage process in the area. This model is used to analyze the influence of the change of the underlying surface, the watercourse and the drainage pipe network on the waterlogging. The corresponding solution measures for waterlogging in Liedechong waterlogging area are put forward. The results show that the original river system in the region which has a key influence on urban drainage in the process of urbanization should be protected and corresponding drainage capacity of original river system should be restored.
The evolution of the watercourse and the change of the underlying surface in the process of urban development are studied in order to analyze the causes of the typical waterlogging black spots in the Liedechong waterlogging area. The coupled one-dimensional river network, two-dimensional groundwater flow and one-dimensional pipe network model are constructed to simulate the drainage process in the area. This model is used to analyze the influence of the change of the underlying surface, the watercourse and the drainage pipe network on the waterlogging. The corresponding solution measures for waterlogging in Liedechong waterlogging area are put forward. The results show that the original river system in the region which has a key influence on urban drainage in the process of urbanization should be protected and corresponding drainage capacity of original river system should be restored.
引文
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[2] 王峰, 颜正惠, 黄伟乐, 等. 城市雨水内涝成因及对策[J]. 中国给水排水, 2012, 28(12): 15-20.
[3] 管满. 太原市城市内涝剖析及解决对策[J]. 中国给水排水, 2012, 28(14): 16-19.
[4] 王建鹏, 薛春芳, 解以扬, 等. 基于内涝模型的西安市区强降水内涝成因分析[J]. 气象科技, 2008, 36(6): 772-775.
[5] 徐速. 城市雨水管网与地面流的一、 二维集成模拟研究[J]. 中国给水排水, 2011, 27(9): 71-73.
[6] 张晓昕,王强,马洪涛.奥林匹克公园地区雨水系统研究[J].给水排水,2008,34(11):7-14.
[7] Semadeni-Davies A, Hernebring C, Svensson G, et al. The impacts of climate change and urbanisation on drainage in Helsingborg, Sweden: Combined sewer system[J]. Journal of Hydrology, 2008, 350(1): 100-113.
[8] Carsten Jakobsen,Annette B-K,Morten MH. Using MOUSE LTS to analyze sewer mains in Greater Copenhagen[C]//Paper for DHI software conference,June 2001, Scanticon, Snekkersten, Denmark,2001:6-8.
[9] DHI Water & Environment.Mike Flood (1D-2D modeling) User Manual[R]. 2012.
[10] Danish Hydraulic Institute. MIKE URBAN Model Manager[M]. Copenhagen: DHI,2012.
[11] 黄国如,冯杰,刘宁宁,等.城市雨洪模型及应用[M].北京:中国水利水电出版社,2013.