| 河道疏浚回淤过程数值模拟 |
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| 引用本文： | 方春明,黄永健. 河道疏浚回淤过程数值模拟[J]. 泥沙研究, 1999, 21(6): 56-59 |
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| 作者姓名： | 方春明 黄永健 |
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| 作者单位： | 中国水利水电科学研究院,北京,100044 |
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| 基金项目： | 国家自然科学基金，水利部资助 |
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| 摘 要： | 以平面二维水流泥沙数学模型为基础，对河道挖槽疏浚加淤的一般规律进行了模拟。模型考虑了河道的横向展宽，先模拟出一条概化的稳定平衡河槽，再模拟开挖后的回淤过程，因而挖槽回淤模拟排除了挖槽外的其它因素影响。对于本文中的概化河道，得出了开挖后的回淤量与淤积分布规律。挖槽河在很长一段时间内保持比原平衡河道较窄深的断面形态，说明挖槽疏浚对河道输沙和洪水灾害防治是有利的。
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| 关 键 词： | 挖槽疏浚 回淤 平衡河槽 |
Numerical Simulation for Sedimentation Processes of River Channel after Dredging |
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| FANG Chun-ming,HUANG Yong-jian. Numerical Simulation for Sedimentation Processes of River Channel after Dredging[J]. Journal of Sediment Research, 1999, 21(6): 56-59 |
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| Authors: | FANG Chun-ming HUANG Yong-jian |
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| Abstract: | The sedimentation processes of river channel after dredging is simulated with 2| D numerical model.Considering the transversal evolution of cross|section,the model firstly simulates an equilibrium channel,then simulates the sedimentation processes after dredging,and the other factors affecting the dredge is neglected.In this article,the deposit volume and distribution in the simplified channel are predicted with the model.Comparing with the origin shape,the dredged channel can maintain narrower and deeper in a long time,which indicates that the river channel dredging is beneficial to sediment deliver and flood control. |
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| Keywords: | river channel dredging sedimentation processes equilibrium river channel |
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