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首页> 外文会议>International Yellow River Forum on Keeping Healthy Life of the River vol.4; 20051021-24; Zhengzhou(CN) >Experimental Study on the Mechanism of Channel Excavation Dredging Sediment Deposition Reduction and River Channel Hydraulics Calculation in Narrow Reach of the Lower Yellow River
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Experimental Study on the Mechanism of Channel Excavation Dredging Sediment Deposition Reduction and River Channel Hydraulics Calculation in Narrow Reach of the Lower Yellow River

机译：黄河下游狭窄河道开挖疏ging泥沙淤积机理及河道水力计算的试验研究。

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摘要

In the paper, combining the narrow channel excavation dredging and dykes reinforcing in the lower narrow reaches of the Yellow River, excavation dredging mechanism on excavation dredging was studied by using physical model. Research result revealed: river dredging deposition reduction mechanism in certainly degree and the sediment deposition reduction effects have be approved by prototype observation datum of excavation dredging and dykes reinforcing startup projects in 1998. The hydraulics problems of river dredging and channel dredging up may be calculated through commonly hydraulics knowledge. The calculation content include: the water level of the dredging research reaches, water surface slope as well as flow resistance highness of the dredging reach end. The results are basic sameness between the calculation and the physical model experiment, and it is proved by prototype reaches dredging datum. It is shown that the reaches dredging geometry parameter can be calculated through hydraulic formula in case of the changed reaches boundary condition after simplified. This paper would offer convenient design calculation method for river excavation dredging up project in the future.
机译：本文结合黄河下游狭窄河道的疏channel疏reinforcing与堤防加固，运用物理模型研究了疏on疏exc的开挖机理。研究结果表明：1998年河道疏deposition的减淤机理在一定程度上，减淤效果得到了1998年开挖疏和堤防加固启动工程的原型观测数据的认可。可以通过以下方法计算河道疏and和河道疏The的水力问题：常见的液压知识。计算内容包括：疏research研究河段的水位，水面坡度以及疏reach河道末端的流阻高。计算结果与物理模型试验基本吻合，并通过原型达到了挖泥基准。结果表明，在简化后改变了到达边界条件的情况下，可以通过水力公式计算出河道清淤几何参数。为今后的河道疏dr工程提供方便的设计计算方法。

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