水流挟沙能力

长江中下游水流挟沙能力的研究

Study on the Sediment Carrying Capacity of the Middle and Downstream Yangtze River

本文结合黄河实测资料，分析了这一简化对确定水流挟沙能力的影响。

Analysis of the influence of the simplification on determination of sediment carrying capacity was carried out on the basis of the field data in Yellow river .

悬移质水流挟沙能力与输沙特性

Sediment - Carrying Capacity and Characteristics of Flow with Suspended Load

生态旅游承载力问题的探讨天然河道水流挟沙能力研究

Research on the Eco - tourism Carrying Capacity

天然河道水流挟沙能力研究

Sediment carrying capacity of circulating flow

天然河道水流挟沙能力的确定对于利用数学模型来模拟泥沙运动和河床变形具有重要意义。

Correct calculation of sediment-carrying capacity in natural rivers is important for using mathematical models to simulate sediment transport .

现有水流挟沙能力公式建立在潮段平均的概念之上，不能反映其随潮变化的特性。

Previous formulas which were set up in light of semi-tidal or tidal-averaged cannot describe the variation of sediment-laden capacity with the tidal flow .

针对该计算式分析了影响水流挟沙能力的因素。

The formula is verified by the field and experimental flume data , and the influence of the main factors on sediment-carrying capacity is analyzed .

通过应用长江实测资料进行验证，并与有关现有典型公式比较分析，结果表明本文导出的水流挟沙能力计算公式可靠程度和计算精度均令人满意。

It has been indicated by the verification and the comparison with the typical existing formulas that the proposed formula is in a good agreement with the measured data in the Yangtze river .

潮汐条件下的水流挟沙能力模型必须考虑波浪和潮流的共同作用，模型的形式比较复杂，且在水深很小的潮滩浅水区域不能适用。

Under the tidal condition , sediment carrying capacity model must consider the joint action of wave and current . However , this model is not applicable to the shallow area of intertidal flats .

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。

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，考虑时变水流挟沙能力和粘性非均匀沙起动概率，结合河网非恒定流数值计算，建立起沿海平原河网不平衡输沙与淤积的计算方法。

Considering time-dependent sediment transport capacity and incipient probability of cohesive non-uniform sediment and integrating numerical calculation of unsteady flow , a calculation method of nonequilibrium sediment transport and deposition through the river network in coastal plain is established .

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。

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 .

通常采用泥沙的静水沉速，以计算水流的挟沙能力，在理论上是不合适的。

The current practice of estimating the silt-carrying capacity of channel flow by the use of the settling velocity of suspended sediment in still water is theoretically unreasonable .

分析发现使用动力调整技术，可以改变模型水流的挟沙能力，进而影响冲淤变形时间比尺。

It finds out through analysis that dynamic regulation technique can change the sediment carrying capacity of the model and affect the time scale of scouring and silting deformation .

粉沙质与淤泥质浅滩在风浪和水流作用下的挟沙能力

Sand-laden Capacity of Silt and Muddy Shallows under the Action of Wind Wave and Water Flow

对有关粉沙质与淤泥质浅滩在风浪和水流作用下的挟沙能力问题结合现场实测及室内试验资料进行了分析。

Combining the actual measurement in site and the indoor test data , the analysis on the sediment carrying capacity of silty and muddy shallows under the action of wind wave and water flow are made in the paper .