| 摘要: |
| 结合长江口深水航道治理二期工程北槽中整治建筑物的布置形式，在潮汐往复流水槽中进行了丁坝群不同布置形式的概化试验，试验结果表明，在深水区的单侧丁坝群对宽浅河床地形的调整作用大于浅水区：双侧丁坝群的联合作用能调整深水区的平面位置；合理地选择治导线的放宽率，能有效地调整深槽平均水深的沿程变化． |
| 关键词: 丁坝群 宽浅河床 河床地形 长江口 潮汐 |
| DOI： |
| 分类号:TV863 |
| 基金项目: |
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| Effects of spur dikes in adjustment of bed topography of wide-shallow rivers |
|
HAN Yu-fang,CHEN Zhi-chang
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| Abstract: |
| The outline tests on the alignment of spur dikes in the flume with repeated tidal flow were carried out based on the alignment of the regulation structures in the north trough of the deep waterway in the Yangtze Estuary. Test results show that spur dikes aligned along a single bank in the deep water zone have more effects on the adjustment of the bed topography of the wide-shallow river than in the shallow water zone; alignment of spur dikes along both banks can effectively adjust the planimetric position of deep-water zone; and a reasonable widening rate of the regulation line in the estuary can readjust the variation of the average water depth along the river. |
| Key words: spur dike,wide-shallow riverbed,regulation line,Yangtze Estuary |
