bed scour

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.

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 test results show that the apron can reduce back flow at the dam toe, and the piers can obviously diminish river bed scouring near the scour resistant wall.

试验结果表明：护坦减轻了下游纵向围堰左侧坝趾处的回流淘刷，隔流墩明显减轻了防冲墙附近河床的冲刷，确保了坝基和下游纵向围堰的安全。

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

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

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。

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.

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；

Through scientific study, the problems of flood discharge and energy dissipation can be properly solved by adoption of comprehensive treatment measures with "dispersing flood discharge, reducing impact force of flow load and reinforcement of river bed to increase its scour resistance".

经科学研究，采用“分散泄洪，削弱水流冲击力，加固河床，增强河道抗冲能力”的综合治理措施，较好地解决了泄洪消能布置问题。

There are three main models, including flow model, bed load model and scour model ( seabed changing model).

整个模型主要包括流场模型、泥沙模型、冲刷（底床变形）模型。

A Mathematical Model for Changeable Processes of Bed Scour and Backwater in Bridge Waterways

桥梁河道冲刷和壅水过程数学模型

The beddings of sandstones developed in varied ways, among which cross bedding, horizontal bedding, parallel bedding, bed scour and fossils of plant stems and leaves took the majority.

砂岩层理发育丰富，主要有交错层理、水平层理、平行层理、冲刷面和植物茎叶化石等。

The Problem of Similitude of Bed rock Scour

基岩冲刷的模型相似问题

Through total sediment model tests, the characteristics of sediment movement and the rules of bed scour and sedimentation of this reach, also its influences upon safe navigation and ship anchorage were revealed.

通过全沙模型试验研究，揭示了该河段的水流泥沙运动特性和河床冲淤规律，及其对船舶安全航行和靠泊的影响。

Analysis of the test effect using snow flood to scour the bed elevation in Tongguan

利用桃汛洪水冲刷降低潼关高程试验效果分析

The main channel bed will scour if sediment amount from tributary debris is less than that the main stream can carry and the river evolution exhibits the characteristic of mountainous rivers.

当支沟泥石流输入主河的泥沙量小于主河的输沙量时，主河河床将下切，并逐渐恢复山区性河流的特征。

For examining the field observation results, the reproductive tests were performed for river bed scour in the downstream of the dam by using amplified rock block method with four kinds of crushed stones of different particle sizes.

为了论证原型观测成果，模型利用岩块放大法，采用4种不同粒径松散碎石的动床试验，对坝下游河床的冲刷，进行了复演试验。

River bed intertia is an important nature of alluvial river bed and is closely related to the bed scour rate in unsteady flows.

河床惯性是河床在非恒定流中一种重要的动力学性质。

On River Bed Scour Resistance Downstream of High Spillway Dam in Canyon Region with Big Flood Discharge

试论峡谷区大泄量高溢流坝下游河床的抗冲能力

Research Progress on River Bed Scour

河床下切问题的研究进展