| 珠江磨刀门河口拦门沙对排洪影响的初步研究 |
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| 引用本文： | 谭 超,黄本胜,杨清书,邱 静.珠江磨刀门河口拦门沙对排洪影响的初步研究[J].水利学报,2011,42(11). |
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| 作者姓名： | 谭 超 黄本胜 杨清书 邱 静 |
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| 作者单位： | 1. 广东省水利水电科学研究院广东省水动力学应用研究重点实验室,广东广州510610／广东省河口水利工程实验室,广东广州510610
2. 广东省河口水利工程实验室,广东广州510610／中山大学河口海岸研究所,广东广州510275 |
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| 基金项目： | 广东省科技计划项目(2010A030200016); 国家自然科学基金(21077139)资助 |
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| 摘 要： | 建立了磨刀门河口二维水动力模型,在对现场实测资料验证良好的基础上,选取开挖中心拦门沙、东汊与西汊疏浚及导堤封堵东汊3个方案,比较了它们对排洪的影响,以探讨河口拦门沙的排洪效应问题。数值模拟表明,拦门沙开挖对磨刀门河口局部水动力特征的影响较小,拦门沙的开挖不能大幅增加洪水排泄的效率;修建导堤封堵东汊会加大挂定角至大井角的水面比降,造成更严重的壅水;东、西汊的浚深对排洪的影响也较小。拦门沙的存在看似对于泄洪有一定的阻碍作用,实际上河口及其拦门沙可以通过地貌形态的自动调整来与洪水径流作用相适应。
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| 关 键 词： | 磨刀门 拦门沙 排洪效应 数值模拟 |
Effect of sandbar in Modaomen Estuary on flood drainage of Pearl River |
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| TAN Chao,HUANG Ben-sheng,YANG Qing-shu and QIU Jing.Effect of sandbar in Modaomen Estuary on flood drainage of Pearl River[J].Journal of Hydraulic Engineering,2011,42(11). |
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| Authors: | TAN Chao HUANG Ben-sheng YANG Qing-shu and QIU Jing |
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| Affiliation: | TAN Chao1,2,HUANG Ben-sheng1,YANG Qing-shu2,3,QIU Jing1,2(1. Guangdong Research Institute of Water Resources and Hydropower,Guangzhou 510610,China,2. Guangdong Engineering Laboratory of Estuary Hydropower,3. Sun Yat-sen University,Guangzhou 510275,China) |
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| Abstract: | The Modaomen Estuary,which connect the complicated stream network of the Pearl River and the estuarine bays,is the most important water way in discharging freshwater and sediment into the estuarine bays. However,there is immense bar area evolved in the outer subaqueous delta. Consequently,the flood releasing safety is the most important issue in the regulation project of the estuary. A 2-D tidal flow numerical model is established to investigate the effects of different regulation measures on the flood rele... |
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| Keywords: | modaomen estuary sandbar effect on flood drainage tital flow numerical simulation |
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