引用本文:金建峰,张玉伦,李志永,钱学诚,黄姿菡.钱塘江九溪涌潮重塑在工程实践中的探索研究[J].水利水运工程学报,2019,(5):114-120
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钱塘江九溪涌潮重塑在工程实践中的探索研究
金建峰1, 张玉伦1, 李志永2, 钱学诚3, 黄姿菡2
1.杭州市闲林水库管理处，浙江杭州;2.浙江省水利河口研究院，浙江杭州;3.杭州市河道管理总站，浙江杭州
摘要:
为保护钱塘江涌潮景观、减小涌潮危害，重塑钱塘江九溪涌潮，变潮害为潮景，使涌潮可赏、可控、安全。应用KFVS格式建立二维涌潮数学模型，在实测水文资料验证的基础上，计算优化方案实施前后的流场及涌潮传播特性，从构筑物近区涌潮高度、涌高明显的岸线长度和涌高明显的区域面积等3个指标综合评判涌潮重塑效果。通过物理模型试验，模拟涌潮的形成与传播过程，分析比较各方案实施前后工程区域附近涌潮传播过程的壅高、越堤等变化情况，进一步验证了重塑效果。研究结果表明，通过优化工程布局，采取工程措施，钱塘江九溪涌潮重塑具有可行性，既能保留九溪涌潮特性，又能实现安全观潮。
关键词:  钱塘江  涌潮  KFVS格式  物理模型  涌潮重塑
DOI：10.12170/201905015
分类号:TV131.4; TV131.61
基金项目:浙江省水利科技计划项目（RB1801)
Exploratory research on rebuilding tidal bore in the Jiuxi reach of the Qiantang River in the project practice
JIN Jianfeng1, ZHANG Yulun1, LI Zhiyong2, QIAN Xuecheng3, HUANG Zihan2
1.Hangzhou Xianlin Reservoir Management Office， Hangzhou;2.Zhejiang Institute of Hydraulics and Estuary， Hangzhou;3.Hangzhou Estuary Channel Management Bureau， Hangzhou
Abstract:
Taking the protection of the tidal bore landscape and the reduction of its flood hazards into consideration， it is proposed to rebuild the tidal bore in the Jiuxi reach of the Qiantang River so as to improve the landscape. The tidal bore will thus be viewable, controllable and safe. On the basis of measured and verified hydrological data， by using a 2D numerical model of the tidal bore based on the application of KFVS （kinetic flux vector splitting） format， the flow field before & after the project and the characteristics of the tidal bore propagation are simulated; a comprehensive evaluation is made of the rebuilding effect of the tidal bore based on the three factors which are the height of the tidal bore near the structures， the length of the coastline and the regional area where the obvious surge height exists. The physical model test to simulate the tidal bore formation and propagation is also applied in order to verify the effect of the rebuilding. Analysis and comparisons are conducted on the pre-and post-project conditions of run up height and overtopping among all the optimized schemes to further support the results of rebuilding the tidal bore. It is found that by optimizing the project layout and taking project measures， rebuilding the tidal bore in the Jiuxi reach of the Qiantang River is feasible. The characteristics of the Jiuxi tidal bore can be reserved and viewing the tide safely can be achieved in the meantime.
Key words:  Qiantang River  tidal bore  KFVS format  physical model  rebuilding tidal bore
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