| 不同高度潜堤减淤效果水槽实验研究 |
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| 引用本文： | 庞启秀,张瑞波,杨 华.不同高度潜堤减淤效果水槽实验研究[J].海洋工程,2012,30(2):66-71. |
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| 作者姓名： | 庞启秀 张瑞波 杨 华 |
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| 作者单位： | 交通运输部天津水运工程科学研究所工程泥沙交通行业重点实验室,天津,300456 |
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| 基金项目： | 国家高技术研究发展计划(863)资助项目，天津市滨海新区重大科技支撑项目 |
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| 摘 要： | 潜堤高程是淤泥质海岸潜堤设计的关键要素之一。为了确定潜堤高程,首先根据已建潜堤工程的经验分析得出潜堤减淤的主要机理,即主要是阻挡了浮泥或底部高含沙水体直接进入航道和缩短了含沙水体进入航道的时间,进而在长水槽中开展了一系列比对实验,主要研究不同堤顶高程时的水流紊动、堤前浮泥起动、浮泥层厚度变化、堤后航道泥沙落淤情况等,并以此作为比选堤顶高度的基本依据。实验结果表明当相对高度即潜堤高度与堤前水深之比为0.2～0.5时,便有较好的减淤效果。
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| 关 键 词： | 潜堤高度 减淤措施 淤泥 水槽实验 |
Flume experimental study on the heights of submerged dike to diminish siltation |
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| PANG Qi-xiu,ZHANG Rui-bo and YANG Hua.Flume experimental study on the heights of submerged dike to diminish siltation[J].Ocean Engineering,2012,30(2):66-71. |
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| Authors: | PANG Qi-xiu ZHANG Rui-bo and YANG Hua |
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| Institution: | (Tianjin Research Institute of Water Transport Engineering,Key Laboratory of Engineering Sediment of Ministry of Transport,Tianjin 300456,China) |
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| Abstract: | The height of submerged dike employed to diminish sedimentation in muddy coast is one of important factors for the design.The experiments conducted in a long flume are designed based on the main principle of using the submerged dike to eliminate sedimentation,which is to prevent fluid mud from entering the channel directly,and shorten the time of high silt-laden water entering the channel.The flow disturbing,motion of fluid mud,depth variation of fluid mud and siltation in the channel behind the submerged dike are selected as the main parameters for the comparison of different heights of the dike.The results show that the submerged dike is efficient to decrease the erosion of fluid mud existing in front of the dike when the relative height,the ratio of height of dike to water depth,equals to 0.2～0.5. |
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| Keywords: | heights of submerged dike countermeasures against siltation mud flume experiments |
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