钱塘江河口一维盐度动床预报模型及应用

史英标; 李若华; 姚凯华

doi:10.14042/j.cnki.32.1309.2015.02.008

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钱塘江河口一维盐度动床预报模型及应用

史英标, 李若华, 姚凯华

文章导航 > 水科学进展 > 2015 > 26(2): 212-220

史英标, 李若华, 姚凯华. 钱塘江河口一维盐度动床预报模型及应用[J]. 水科学进展, 2015, 26(2): 212-220. doi: 10.14042/j.cnki.32.1309.2015.02.008

引用本文:

史英标, 李若华, 姚凯华. 钱塘江河口一维盐度动床预报模型及应用[J]. 水科学进展, 2015, 26(2): 212-220. doi: 10.14042/j.cnki.32.1309.2015.02.008

SHI Yingbiao, LI Ruohua, YAO Kaihua. 1-D movable bed numerical forecast model of salinity of the Qiantang River estuarine reach and its application[J]. Advances in Water Science, 2015, 26(2): 212-220. doi: 10.14042/j.cnki.32.1309.2015.02.008

Citation:

SHI Yingbiao, LI Ruohua, YAO Kaihua. 1-D movable bed numerical forecast model of salinity of the Qiantang River estuarine reach and its application[J]. Advances in Water Science, 2015, 26(2): 212-220. doi: 10.14042/j.cnki.32.1309.2015.02.008

钱塘江河口一维盐度动床预报模型及应用

doi: 10.14042/j.cnki.32.1309.2015.02.008

1.
浙江大学海洋学院, 浙江杭州 310054;
2.
浙江省水利河口研究院, 浙江杭州 310020

基金项目: 浙江省省属科研院所专项计划项目(2015F50010); 水利部公益性行业科研专项经费资助项目(201101056)

详细信息

作者简介:
史英标(1967—),男,浙江嵊州人,教授级高级工程师,主要从事河口海岸水沙动力学及水环境方面的研究。E-mail:shiyb@zjwater.gov.cn

中图分类号: TV131.4

1-D movable bed numerical forecast model of salinity of the Qiantang River estuarine reach and its application

1.
Marine College of Zhejiang University, Hangzhou 310054, China;
2.
Zhejiang Institute of Hydraulics & Estuary, Hangzhou 310020, China

摘要: 钱塘江河口为强涌潮、高含沙量、河床冲淤剧烈的河口,其盐度输移时空变化受河床冲淤的反馈影响十分显著。建立了考虑河床冲淤变化的一维盐度动床数学模型,耦合求解水沙运动、河床冲淤及盐度输移过程,数值计算方法采用守恒性较好的有限体积法。验证结果表明:河床冲淤对氯度的影响非常显著,动床模型的结果与实测基本吻合,在长历时盐度预报中采用动床模型是必要的。应用该模型分析了钱塘江河口咸水入侵对上游建库、治江缩窄工程等人类活动的响应,探讨了杭州城市供水水源保证率。结果表明,新安江水库、河口治理缩窄工程对改善河口淡水资源利用、保障杭州市供水安全显著;供水保证率要达95%以上,需采取上游水库泄水调度和新建备用水库等措施。
- 盐度输移 /
- 动床预报模型 /
- 人类活动 /
- 供水保证率 /
- 钱塘江河口
Abstract: The Qiantang River estuary is an alluvial estuary with strong tidal bore, high sediment concentration and easy changeable riverbed. The interaction between tide and fluvial feedback has great effects on saltwater intrusion. In this paper, a 1-D numerical forecast model of salinity has been developed in the light of riverbed deformation, and the process of water flow, sediment transport, river bed deformation and salinity are fully coupled solved. The governing equations of the model are solved by an explicit finite-volume method with good conservation performance. The verification results show that the riverbed deformation has great influence on chlorine, and the chlorine computed by the movable-bed numerical model agrees well with the measured. Therefore, it is necessary to adopt the movable-bed numerical model in long-duration salinity forecast. Finally, the model is used to investigate the response pattern of saltwater intrusion in the Qiantang River estuary to human activities, such as construction of Xin'anjiang-reservoir and the Qiantang River estuary narrowing regulation. And the problem of the water supply guarantee rate of Hangzhou city is also discussed. The results show that Xin'anjiang-reservoir and the Qiantang River estuary regulation engineering have a significant effect on improving the estuarine freshwater resources and ensuring the safety of water supply of Hangzhou city. In order to raise the water supply guarantee rate to 95%, the measures of scheduling release water discharge from the upstream reservoir and building a new backup reservoir should be taken.
- salinity transport /
- movable bed numerical forecast model /
- human activities /
- guarantee rate of water supply /
- Qiantang River estuary

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钱塘江河口一维盐度动床预报模型及应用

doi: 10.14042/j.cnki.32.1309.2015.02.008

1. 浙江大学海洋学院, 浙江杭州 310054;

2. 浙江省水利河口研究院, 浙江杭州 310020

基金项目: 浙江省省属科研院所专项计划项目(2015F50010); 水利部公益性行业科研专项经费资助项目(201101056)

作者简介:
史英标(1967—),男,浙江嵊州人,教授级高级工程师,主要从事河口海岸水沙动力学及水环境方面的研究。E-mail:shiyb@zjwater.gov.cn

收稿日期: 2014-09-05
刊出日期: 2015-03-25

中图分类号: TV131.4

关键词:

摘要: 钱塘江河口为强涌潮、高含沙量、河床冲淤剧烈的河口,其盐度输移时空变化受河床冲淤的反馈影响十分显著。建立了考虑河床冲淤变化的一维盐度动床数学模型,耦合求解水沙运动、河床冲淤及盐度输移过程,数值计算方法采用守恒性较好的有限体积法。验证结果表明:河床冲淤对氯度的影响非常显著,动床模型的结果与实测基本吻合,在长历时盐度预报中采用动床模型是必要的。应用该模型分析了钱塘江河口咸水入侵对上游建库、治江缩窄工程等人类活动的响应,探讨了杭州城市供水水源保证率。结果表明,新安江水库、河口治理缩窄工程对改善河口淡水资源利用、保障杭州市供水安全显著;供水保证率要达95%以上,需采取上游水库泄水调度和新建备用水库等措施。

English Abstract

1-D movable bed numerical forecast model of salinity of the Qiantang River estuarine reach and its application

1. Marine College of Zhejiang University, Hangzhou 310054, China;

2. Zhejiang Institute of Hydraulics & Estuary, Hangzhou 310020, China

Received Date: 2014-09-05
Publish Date: 2015-03-25

Keywords:

Abstract: The Qiantang River estuary is an alluvial estuary with strong tidal bore, high sediment concentration and easy changeable riverbed. The interaction between tide and fluvial feedback has great effects on saltwater intrusion. In this paper, a 1-D numerical forecast model of salinity has been developed in the light of riverbed deformation, and the process of water flow, sediment transport, river bed deformation and salinity are fully coupled solved. The governing equations of the model are solved by an explicit finite-volume method with good conservation performance. The verification results show that the riverbed deformation has great influence on chlorine, and the chlorine computed by the movable-bed numerical model agrees well with the measured. Therefore, it is necessary to adopt the movable-bed numerical model in long-duration salinity forecast. Finally, the model is used to investigate the response pattern of saltwater intrusion in the Qiantang River estuary to human activities, such as construction of Xin'anjiang-reservoir and the Qiantang River estuary narrowing regulation. And the problem of the water supply guarantee rate of Hangzhou city is also discussed. The results show that Xin'anjiang-reservoir and the Qiantang River estuary regulation engineering have a significant effect on improving the estuarine freshwater resources and ensuring the safety of water supply of Hangzhou city. In order to raise the water supply guarantee rate to 95%, the measures of scheduling release water discharge from the upstream reservoir and building a new backup reservoir should be taken.

史英标, 李若华, 姚凯华. 钱塘江河口一维盐度动床预报模型及应用[J]. 水科学进展, 2015, 26(2): 212-220. doi: 10.14042/j.cnki.32.1309.2015.02.008

引用本文:

史英标, 李若华, 姚凯华. 钱塘江河口一维盐度动床预报模型及应用[J]. 水科学进展, 2015, 26(2): 212-220. doi: 10.14042/j.cnki.32.1309.2015.02.008

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钱塘江河口一维盐度动床预报模型及应用

doi: 10.14042/j.cnki.32.1309.2015.02.008

作者简介: 史英标(1967—),男,浙江嵊州人,教授级高级工程师,主要从事河口海岸水沙动力学及水环境方面的研究。E-mail:shiyb@zjwater.gov.cn

1-D movable bed numerical forecast model of salinity of the Qiantang River estuarine reach and its application

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出版历程

钱塘江河口一维盐度动床预报模型及应用

doi: 10.14042/j.cnki.32.1309.2015.02.008

1. 浙江大学海洋学院, 浙江杭州 310054; 2. 浙江省水利河口研究院, 浙江杭州 310020

作者简介: 史英标(1967—),男,浙江嵊州人,教授级高级工程师,主要从事河口海岸水沙动力学及水环境方面的研究。E-mail:shiyb@zjwater.gov.cn

English Abstract

1-D movable bed numerical forecast model of salinity of the Qiantang River estuarine reach and its application

1. Marine College of Zhejiang University, Hangzhou 310054, China; 2. Zhejiang Institute of Hydraulics & Estuary, Hangzhou 310020, China

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作者简介:
史英标(1967—),男,浙江嵊州人,教授级高级工程师,主要从事河口海岸水沙动力学及水环境方面的研究。E-mail:shiyb@zjwater.gov.cn

1. 浙江大学海洋学院, 浙江杭州 310054;

2. 浙江省水利河口研究院, 浙江杭州 310020

作者简介:
史英标(1967—),男,浙江嵊州人,教授级高级工程师,主要从事河口海岸水沙动力学及水环境方面的研究。E-mail:shiyb@zjwater.gov.cn

1. Marine College of Zhejiang University, Hangzhou 310054, China;

2. Zhejiang Institute of Hydraulics & Estuary, Hangzhou 310020, China