• 具有很强的泄洪能力输沙能力,整治追求目标

    The narrow and deep channel possesses great flood discharge and silt carrying capacities, which is the target of the main channel training.

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  • 河道主槽两侧修建生产影响滩泥沙横向交换河床演变带来很大影响

    The productive embankments on the watercourse bottomland disturb the water-sediment lateral exchange between bottomland and main flume, which have great influence on the riverbed evolution.

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  • 分析结果表明南通河段河势格局基本稳定新大码头工程水域长江河势将会长期维持下去。

    The results indicate that the river-bed of Nantong reach is stable on the whole and Xinda dock waters will serve as a main channel over the long term.

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  • 流量水流动力轴线位置取决于位置,流量时水流动力轴线的变化规律接近矩形断面的情形。

    The position of power axis of flow is determined by main channel when runoff is small, while the change law conforms with the law of rectangular section when runoff is large.

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  • 沉积环境划分为河口沉积环境、潮流沉积环境、浅滩沉积环境、拦门沙坝沉积环境河口前缘沉积环境。

    The dynamic sediment environment is divided into different areas that consist of estuarine deep trough, flood current, Jiaobeisha shoal, estuarine sandbar and seashore outside estuary.

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  • 并非所有漫滩洪水都具有滩刷作用,研究认为,对中低含沙洪水,只要洪水流量平滩流量的1.5倍以上,黄河主槽出现明显冲刷。

    It deems through study that the main channel of the Yellow River will be obviously scoured only when flood discharge reaches to 1.5 times of bankfull discharge.

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  • 应用建立水沙数学模型以及河岸冲刷模型,模拟了一概化弯道在持续清水冲刷线位置、断面形态、比降的变化过程,模拟结果符合弯道演变规律。

    The model is applied to forecast the variation process of main stream direction, cross section and channel slope of a conceptualized curved river under the erosion of clear water.

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  • 结果表明涨潮形成衰亡与涨潮动力轴的摆动涨潮动力变化密切相关 ,涨潮沟的利用与整治必须因势利导 ,顺应其形成机制和演变规律 。

    The results show that the formation and development of flood tide channels are closely related to the variations of values and directions of flood tidal forces in main channels, and .

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  • 本文根据丁坝作用后水流情况,采用动量方程结合试验资料导出了丁坝下游平均流速沿程变化公式,以此基础,提出了丁坝作用下河床冲刷段长度的计算公式。

    According to the flow state in flume for spur and experimental data, the formulas for the mean velocity of main channel varying with distance downstream were derived with momentum principle.

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  • 本文根据丁坝作用后水流情况,采用动量方程结合试验资料导出了丁坝下游平均流速沿程变化公式,以此基础,提出了丁坝作用下河床冲刷段长度的计算公式。

    According to the flow state in flume for spur and experimental data, the formulas for the mean velocity of main channel varying with distance downstream were derived with momentum principle.

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