| 黄河下游游荡河段河床演变对河道整治的响应 |
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| 引用本文： | 姚文艺,杨邦柱.黄河下游游荡河段河床演变对河道整治的响应[J].水科学进展,2004,15(3):324-329. |
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| 作者姓名： | 姚文艺 杨邦柱 |
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| 作者单位： | 1.河海大学水利水电工程学院, 江苏南京, 210098; |
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| 基金项目： | 国家重点基础研究发展计划(973)资助项目(G1999043604)，国家自然科学基金委员会 水利部黄河水利委员会黄河联合研究基金项目(50379016)~~ |
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| 摘 要： | 为预测黄河下游游荡性河道大规模整治后对河床演变的作用,基于河流动力学理论,通过物理模型试验的方法,以黄河下游游荡性河道典型河段为对象,研究了河床过程对河道整治的复杂响应关系。研究结果表明,河槽横断面形态的调整与人工边界约束程度、流量变差及含沙量变差有关;只要整治工程体系平面布设合理,整治工程量达到一定规模后,通过河道整治,可使河槽横断面形态趋于窄深方向发展,促使游荡型河道向限制性弯曲型河道转化,同时,河道泄洪输沙能力有所提高;河道整治后,不同河段的比降调整不会平行进行。
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| 关 键 词： | 河道整治 河床过程 游荡性河道 黄河下游 |
| 文章编号： | 1001-6791(2004)03-0324-06 |
| 收稿时间： | 2003-03-31 |
| 修稿时间： | 2003年3月31日 |
River bed changes in response to the river regulation at the wandering-braided reach of the lower Yellow River |
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| YAO Wen-yi.River bed changes in response to the river regulation at the wandering-braided reach of the lower Yellow River[J].Advances in Water Science,2004,15(3):324-329. |
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| Authors: | YAO Wen-yi |
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| Institution: | 1.College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China;2.Institute of Hydraulic Research of Yellow River, Zhengzhou 450003, China;3.Yellow River Vocational Technical College, Kaifeng 475001, China |
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| Abstract: | In order to predict the effect of the river improvement on the channel evolvement at the wandering-braided reach of the lower Yellow River,based on the theory of fluvial dynamics,the complex ersponse of the channel changes to the river improvement at the wandering-braided reach of the lower Yellow River is studied by the physical model experiment.The results show that the regulation of channel section is related to the restrainted degree of man-made boundary,flow variation and sediment concentration.When the plan layout of regulation project system is reasonable and the quantity is enough,the channel section will be developed to a narrow and deep channel by river improvement,which will make the wandering-braided reach into a restricted tortuous channel.Meanwhile,the flood carrying capacity and sediment transport competency are increased.The regulation of fall at different reach doedn't develop parallelly after the river improvement. |
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| Keywords: | river regulation channel processes wandering-braided lower Yellow River |
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