sediment transport

Sediment Transport and Dynamic Mechanism in the Zhoushan Archipelago Sea Area

舟山群岛海域泥沙运移及动力机制分析

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Results showed that maximum sediment transport rate occurred in 40 m slope length at rainfall intensity less than 2 mm/ min, while it occurred in 60 m slope length at rainfall intensity greater than 2 mm/ min.

结果显示，当雨强小于2.0mm/min时，最大输沙率出现在40m坡长；而当雨强大于2.0mm/min时，最大输沙率出现在60m坡长。

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The rate of longshore sediment transport is calculated based upon a CERC formula and use of 1977-1979 wave data.

利用1977－1979年波浪观测资料和CERC公式计算沿岸输沙率；

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Sediment transport is an important component of estuarine and coastal engineering research.

河口、海岸带泥沙输移问题是河口海岸工程研究的重要组成内容.

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This paper discusses the research development of such laws as the lateral slope of the water surface, secondary circulation flow, average velocity along vertical line, distribution of the main streamline and sediment transport characteristics in the river bend.

本文着重对弯道水流水面横比降、横向环流、纵向垂线平均流速分布规律及弯道输沙特性研究进展进行了阐述分析，以便为生产科研方面服务。

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For determination of sediment transport rates due to flood and ebb tide currents, the Gadd equation is modified through a definition of the frequency distribution function of current speeds within the harbour entrance.

此外，还用改进的Gadd公式确定口门涨、落潮流输沙率，计算中引入汊道口门流速频率分布函数的定义。

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Bottom Sediment Transport in the Flood and Ebb Channels of the Changjiang Estuary

长江口涨、落潮槽底沙输移趋势探讨

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Calculation models for the suspended sediment transport rate

关于悬移质输沙率计算模式的探讨

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Study on Incipient Velocity of Sediment Transport in the Yangtze River

长江泥沙起动流速公式探讨

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Up to now there aren't relatively complete methods for estimating alongshore quantity of sediment transport on the foreshore with tide and silt material.

有潮海淤泥质海岸的沿岸泥沙年输沙量目前尚无比较成熟的计算方法。

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Sediment transport rate under waves is also briefly discussed.

还就波浪作用下的输沙率进行了初步的探讨。

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Characteristic of Surface Sediment Transport in Zhoushan Archipelago Sea Area, East China Sea

东海舟山群岛海域表层沉积物运移特性

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The Huanghe River delta is a rapidly silting type delta body resulted from frequent breaching and swing of the major silt-carrying and sediment transport distributing channel on the terminal land.

黄河三角洲为大含沙输沙之尾闾地上分流河道频繁决口摆动而形成的迅速淤进型洲体。

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Computation shows that the "tidal pumping" effect has a significant role in the suspended sediment transport within the turbidity maximum of the Changjiang Estuary. Tidal pumping and vertical shearing are the principal factors leading to distinctions.

计算表明，潮泵效应在长江河口最大浑浊带悬沙输移中起着重要的作用。潮泵作用和垂向切变作用是造成两者差别的主要原因。

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This model is adopted to simulate the suspended sediment transport at the north passage of Changjiang River Estuary and the calculated results coincide with the field data, which validates this model can simulate the suspended sediment transport process in the tidal estuary.

利用该模型模拟了长江口北槽段潮流输沙过程，计算结果与实测资料较好吻合，表明了该模型能够模拟窄深的潮汐型河口地区悬沙输移过程。

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So a new concept that the time-dependent sediment transport capacity is proposed, which means sediment transport capacity varies with tidal velocity and water level in half tide cycle and it is a function of time.

为此提出时变挟沙能力的新概念，即水流挟沙能力在半潮周期内随潮流速和潮位同步变化，是时间的函数。

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Obvious differences transport mechanism exist between the uniform and non uniform sediment.

非均匀沙运动规律与均匀沙明显不同.

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Prediction of sediment transport rate in the lower reaches of the Yellow River

黄河下游泥沙输沙率的预测

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Experiments were carried out to study the influence of water diversion on the sediment transport capacity.

浑水分流后,一般会改变水流的含沙量,或者影响水流的稳定输沙状态,引起河床的冲淤变化.

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The result shows that the advection is the main factor to affect the suspended sediment transport, and the tidal pumping effect also plays an important role.

结果表明，悬沙净输移以平流作用占优，潮泵效应项在悬沙输移中也相当重要；

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Study on mechanism of water and suspended sediment transport in flood and ebb channels

河口涨落潮槽水沙输运机制研究

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Obvious differences of transport mechanism exist between the uniform and non-uniform sediment.

非均匀沙运动规律与均匀沙存有明显的不同.

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A slower exchange rate of bed material then leads to a longer distance of non equilibrium sediment transport.

床沙交换速率愈慢，则冲刷距离愈长。

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The sediment-laden capacity is a key parameter to the mathematical model of sediment transport, which is not well understood for the complexity of suspended sediment movement in the tidal estuary, so it's theoretically significant to study further the sediment-laden capacity of tidal flow.

水流挟沙能力是泥沙数学模型的关键参数，而潮汐河口悬沙运动极其复杂，至今对河口挟沙能力的研究十分有限，进一步研究潮流挟沙能力具有重要的理论意义。

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The model is non-coupling and non-saturating sediment transport, and it can calculate steady and unsteady flow.

模型为 非 耦合及非饱和输沙模型, 恒定和非恒定情况都可以计算.

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Notes on net flux in fluctuated process in view of frequency with special reference to the suspended sediment transport

从频域分析波动输运过程的时均通量

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Sediment transport may not pump more water or mud.

电泵不得输送含沙量较多的水或泥浆.

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The numerical models of tidal currents and sediment transport for three generalized physical models are established. From the numerical models, the effects of distortion ratios on tidal currents and sediment scour and silt in the channel are given.

采用数学模型进行模型变率影响研究，针对系列概化物理模型建立了相应的潮流数学模型和泥沙数学模型，给出了模型变率对潮流流速和航道冲淤变化的影响。

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Variation of Rainfall in Dasha River Watershed and Its Connection to Sediment Transport

大沙河流域降水变化与输沙关系的研究

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The study of slope length effect on runoff, sediment yield and dynamics process is the breakthrough to reveal erosion mechanism on slope and is the basic problem to solve sediment transport mechanics, soil erosion and soil and water conservation.

坡面径流侵蚀产沙及动力学过程的研究是揭示坡面侵蚀产沙机理的突破点，是泥沙运动力学、土壤侵蚀和水土保持学中亟待解决的基础问题。

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