| 链斗式挖泥船疏浚引起的悬浮物扩散规律 |
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| 作者姓名： | 陈杰 ;蒋昌波 ;张绍华 ;胡保安 |
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| 作者单位： | [1]长沙理工大学水利工程学院,湖南长沙410004; [2]水沙科学与水灾害防治湖南省重点实验室,湖南长沙410004; [3]中交天津航道局有限公司,天津300461 |
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| 基金项目： | 基金项目：国家自然科学基金重点项目（51239001）;高等学校博士学科点专项科研基金新教师类资助课题（20124316120003）;湖南省教育厅资助科研项目（138130）;天津市科技兴海行动计划（KJXH2011-12） |
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| 摘 要： | 挖泥船疏浚施工引起的悬浮物对周围水域环境具有危害。选取链斗式挖泥船为研究对象，开展疏浚引起的悬浮物扩散规律研究。开展现场观测，得到了挖泥船正常作业时在流向和流速接近稳定的潮流作用下悬浮物扩散情况。基于泥沙对流扩散方程，利用现场观测数据，得到了该型挖泥船正常疏浚作业时引起的悬浮物扩散水深平均表达式，可方便、快捷地进行悬浮物扩散范围及其浓度的估算。在此基础上，对该型链斗式挖泥船在天津港施工可能引起的悬浮物扩散范围进行讨论，得到了悬浮物扩散的规律。
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| 关 键 词： | 悬浮物扩散 现场观测 链斗式挖泥船 理论分析 |
Suspended solids diffusion induced by bucket dredger |
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| Institution: | CHEN Jie, JIANG Chang-bo , ZHANG Shao-hua , HU Bao-an (1.School of Hydraulic Engineering,Changsha University of Science ＆ Technology, Changsha 410004,China 2.Key Laboratory of Water-Sediment Sciences and Water Disaster Prevention of Hunan Province,Changsha 410004,China;3.China Communications Construction Tianjin Dredging Company Limited,Tianjin 300461 ,China) |
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| Abstract: | It＇s well-known that the environmental impact of suspended solids diffusion is induced by dredging.The proposed study is focused on turbidity plume induced by bucket dredger.The field observation is carried out to investigate suspended solids diffusion under tidal current action with nearly stabilized velocity and direction. Based on the ad- vection-diffusion equations and field observation dates, the theoretical formula are convenient and efficient to describe the suspended solids diffusion induced by bucket dredger.The turbidity plume is induced by bucket dredger and the characteristics of suspen- ded solids diffusion in Tianjin Port is discussed. |
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| Keywords: | suspended solids diffusion field observation bucket dredger theoretical analysis |
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