| 陆永军,李浩麟,王红川,左利钦.强潮河口拦门沙航道回淤及治理措施[J].水利学报,2005,36(12):1450-1456 |
| 强潮河口拦门沙航道回淤及治理措施 |
| Back silting and regulation of waterway with sand bar in strong tidal estuary |
| |
| DOI： |
| 中文关键词: 强潮河口 拦门沙 航道治理 波浪 潮流 数学模型 悬沙 浮泥 航槽回淤 |
| 英文关键词: strong tidal estuary sand bar waterway regulation wave action tidal flow mathematical model suspended load fluid mud sediment back silting |
| 基金项目: |
|
| 摘要点击次数: 2654 |
| 全文下载次数: 298 |
| 中文摘要: |
| 针对瓯江口边界地形复杂、岛屿众多、口门以上河段存在高含沙量浑浊带以及底沙级配分布宽的特点，分析了强潮河口拦门沙演变规律及成因，应用波浪与潮流共同作用下的二维泥沙数学模型，研究拦门沙航道开挖后的回淤及治理措施。数学模型中引进前期含沙量的概念，得到了潮流挟沙能力公式，给出了波浪作用下浮泥引起航槽回淤的模拟方法。在瓯江口潮流与含沙量验证基础上，进行了拦门沙航槽开挖后悬沙、底沙与浮泥引起航槽回淤的验证计算，计算的淤积厚度及沿航线分布趋势与实测值比较接近。在此基础上，研究了瓯江口拦门沙航道治理原则、措施及工程对水动力泥沙环境的影响。 |
| 英文摘要: |
| The cause of sand bar formation and its evolution in river mouth of Oujiang River are studied. A 2-D mathematical model for sediment transport under the co-action of wave and tidal flow is applied to calculate the probable back silting of the sand bar after excavation and the best regulation measures are investigated. In the model, the concept of antecedent sediment concentration is introduced and the method for simulating the back silting under the action of wave is established. The validity of the method is verified by the prototype observation data. On this basis the principles of waterway egulation, regulation measures and the impact on sediment environment are further studied. |
|
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |