河床冲刷

对天然河流最大河床冲刷率采用实验得出的冲刷率公式和河床惯性进行了计算，用实测结果验证了冲刷率公式。

The scour rate formula is verified with measured river bed scour during flood . The maximum scoured depth is calculated with the scour rate formula .

试验结果表明，抛石附近水流的脉动强度明显高于远离岸脚水流的脉动强度，从而加剧了抛石所在位置的河床冲刷。抛石体趾脚处河床被淘刷，导致石头滚动或滑动的趋势增强。

The experimental results showed that the flow fluctuation value around riprap was larger than other flow , which resulted in the development of bed scour and increase of stone movement .

广西浔江长洲枢纽坝下河床冲刷研究

Study on River Bed Erosion Below Changzhou Reservior in Xunjiang River

含沙水流挑流消能对卵石河床冲刷的试验研究

Experimental study on pebble bed scouring by deflector dissipation of suspension current

河道冲刷和清水水流河床冲刷率

River channel scour and scour rate of clear water flow

枢纽下游河床冲刷深度估算方法

Estimation method of scouring depth of lower reach of hydro-junction

平底水跃消力池后河床冲刷计算的数学模型

Mathematical model of river bed scouring downstream of stilling basin

在许多情况下，这种河床冲刷是有利的。

In many instances , such bed degradation is beneficial .

河床冲刷粗化的随机模拟

Stochastic Simulation on Scouring and Armoring for River bed

石门拱坝下游岩石河床冲刷模拟研究

A simulated study of the rocky riverbed scour downstream of Shimen Arch Dam

河床冲刷粗化多步预报模式研究

Multi Step Prediction Modeling on Riverbeds Scouring and Armoring

在清水水流河床冲刷率的实验研究基础上，本文进一步研究了挟沙水流来沙率对冲刷率的影响。

The rate of channel bed scour in sediment laden flows are experimentally studied .

河床冲刷深度变化对大型桩基桥梁地震反应的影响

Effects of riverbed scouring depth on the seismic response of bridges on pile foundations

床沙非均匀性对河床冲刷深度有一定影响，泥沙非均匀程度越大，则较粗颗粒的暴露度大，同样水流作用下的冲刷水深也越大。

The more nonuniform the sediment is , the greater the scour depth becomes .

河床冲刷粗化计算

Computation of River bed scouring and armoring

水库下游河床冲刷下切问题的探讨

River Channel Erosion below Dams

丹江口水库下游河床冲刷与水位降落对航道的影响

Effect of Bed Erosion And Fall of Water at the Lower Reach of Danjiangkou Reservoir on the Waterway

水下淹没建筑物局部流场及河床冲刷坑的数值模拟防砂坝下游河床局部冲刷现象之研究

Numerical Simulation on Local Scour at Downstream of Submerged Constructions ; Scouring Phenomenon of the Channel Bed Below a Sabo-dam

同时提出岩石河床冲刷研究的关键课题。

At the same time , a key study subject on the rock riverbed scour is put forward as well .

在施工图阶段原设计布置方案经水工模型试验，存在水舌不归槽和对下游河床冲刷严重等问题。

In the phase of shop drawing , the original designed project faced some serious problems in the hydro-structure model examination .

三峡工程水头高，流量大，下游河床冲刷成为人们的关注点。

The scouring the river bed before the Three Gorges Dam with high head and huge discharge has been given a special attention .

裁弯后裁弯河段上游河道比降加大，河床冲刷，同流量的水位较裁弯前降低，其降低值自下游往上游减小，枯水期大于汛期；

The river channel slope upstream cutoff is increasing with riverbed erosion , and the water stages for the same discharge correspondingly lowered .

回水末端以上河道不受空水影响，河床冲刷继续发展。

There will be continuous channel erosion in the upper reaches of dammed backwater limit because there are out of the influence of dammed water .

在曲率为90°时，河道凸岸从进口到弯顶河床冲刷，弯顶以后泥沙淤积。

In 90 ? curved channels there is erosion from channel beginning till to middle of the reach after that there is significant deposition at inner bank side .

当淹没建筑物压缩河道比例小于50%时，在建筑物下游形成一个小范围的漩涡，不是河床冲刷的主因；

A small-size vortex forms downstream of submerged constructions when constriction proportion is less than 50 % and the vortex is not the main reason leading to bed local scour .

其结构简单、泄流稳定、工程投资低、可减轻下游河床冲刷、改善坝区环境。

The structure is simple , the water discharge is stable , the investment is relative low , the washing of downstream river bed is light and the environment of dam area is improved .

为了调整上荆江河势及预测三峡工程兴建后上荆江河势变化趋势，分阶段进行了上荆江实体模型河势调整试验和河床冲刷试验研究工作。

In order to adjust Upper Jingjiang stretch fluvial regime and predict its change tendency after completion of TGP , a physical model study on Upper Jingjiang Stretch was carried out at various stages .

以一座超大跨度斜拉桥为工程背景，采用解析解和有限元模拟计算相结合的方法，对河床冲刷深度变化对大型桩基桥梁地震反应的影响进行初步探索性研究。

Taking a super long-span cable-stayed bridge as the background , a pilot study was carried out to investigate the effect of riverbed scouring depth on the seismic response of a bridge on pile-foundations .

通过对泄洪建筑物下游河道复杂流场水流运动及河床冲刷状况的分析，研究了自由面流消能区水流扩散方式、流动特征及相关水力要素的概化确定。

The flow characteristics and hydraulic factor 's generalization of free-surface flow were studied by analyzing water movement and diffusion pattern , and the bed scouring of the complex flow field downstream of discharge structure .

利用东线南水北调工程向黄河增水，促使窄河道河床冲刷下切，以形成宽河道溯源冲刷。

To increase the water volume of the Yellow River by the east route of Water Transfer Project from South to North and impel scouring and undercutting the narrow channel for forming backscour in wide channel .