杭嘉湖平原河网地区防洪形势分析及对策研究
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摘要
杭嘉湖区位于长三角平原河网地区,随着近年来城市化快速发展,与太湖流域防洪规划编制时工况相比,下垫面及水利工程条件发生显著变化,尤其是城市扩展和圩外可调蓄水体降低,使得地区防洪形势更为严峻。构建了杭嘉湖区水文水动力学模型,模拟分析了土地利用变化对杭嘉湖区洪涝特性的不利影响,分析了杭嘉湖区防洪形势并提出治理对策。针对近期防洪工程规划方案进行了洪水模拟分析,结果表明,方案实施后区域排洪能力增强,最高洪水位显著下降,初步满足杭嘉湖区防洪要求。
The Hangjiahu area is located in the Yangtze River Delta plain river network area. With the rapid development of urbanization in recent years, the underlying surface and condition of hydraulic projects have changed greatly compared to the project condition when flood control planning in Taihu Basin. Especially for the urban expansion and reduction of water body outside the polder, the flood control ituation has become more severe. A hydrology and hydrodynamics model for Hangjiahu area was proposed in this paper. The negative influence of change of land use pattern on flood control was simulated. The flood control situation of Hangjiahu area was analyzed and the governance measures were proposed. The effect of plan for flood control projects in near feature was simulated. The results showed that the capacity of regional flood discharge after the implementation of the scheme is enhanced, and the maximum flood levels would drop significantly. The flood control requirement of Hangjiahu area would be satisfied, the sustainable development of economy and society in the region is ensured.
The Hangjiahu area is located in the Yangtze River Delta plain river network area. With the rapid development of urbanization in recent years, the underlying surface and condition of hydraulic projects have changed greatly compared to the project condition when flood control planning in Taihu Basin. Especially for the urban expansion and reduction of water body outside the polder, the flood control ituation has become more severe. A hydrology and hydrodynamics model for Hangjiahu area was proposed in this paper. The negative influence of change of land use pattern on flood control was simulated. The flood control situation of Hangjiahu area was analyzed and the governance measures were proposed. The effect of plan for flood control projects in near feature was simulated. The results showed that the capacity of regional flood discharge after the implementation of the scheme is enhanced, and the maximum flood levels would drop significantly. The flood control requirement of Hangjiahu area would be satisfied, the sustainable development of economy and society in the region is ensured.
引文
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[2] 水利部太湖流域管理局. 太湖流域防洪规划[R]. 2007.
[3] 刘克强,李敏. 平原河网地区圩区建设与规划的几点思考[J]. 水利规划与设计,2009,(5),20-21,54.
[4] 赵人俊. 流域水文模拟[M]. 北京:水利电力出版社,1984:32-54.
[5] 芮孝芳. 产流模式的发现与发展[J]. 水利水电科技进展,2013,33(1):1-6,26.
[6] 张光义,夏军,张翔,等. 具有空间分布的超渗产流模型[J]. 人民黄河,2007,29(12):18-20.
[7] 程文辉,王船海,朱琰. 太湖流域模型[M]. 南京:河海大学出版社,2006:71-84.
[8] 太湖流域管理局水利发展研究中心. 太湖流域水资源监控与保护预警系统预警模型完善与开发项目太湖流域下垫面解译与更新成果报告[R]. 2017.
[9] 董国强,杨志勇,于赢东. 下垫面变化对流域产汇流影响研究进展[J],南水北调与水利科技,2013,(3):111-117,126.
[10] 崔广柏,张其成,湛忠宇,等. 海绵城市建设研究进展与若干问题探讨[J]. 水资源保护,2016,32(2):1-4.
[11] 浙江省水利厅. 杭嘉湖区域水利综合规划[R].2015.