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.
同时剖析和验证了长江中下游河床具有较强的自动调整作用。
And the strong capability of channel self adjusting in Mid and Down stream reaches of Changjiang River is...
建坝后水库下泄水流挟带的床沙质含沙量减少，坝下游河床出现冲刷。
The released flow from reservoirs carries less sediment load of bed material than pre? dam periods.
采用平面二维数值模拟方法，对溢洪道下游河床以破碎基岩为主的河流冲刷进行了模拟计算方法的探讨。
The plane two-dimension numerical simulation is used to study the simulation and calculation of the scour in a river whose bed is mostly cracked bedrock at the lower reaches of a spillway.
在气候特别湿润的年月里，平常干涸的河床下游可能会有水流动，因为地下水在那里位抬升到了地表以上。
In particularly wet years, short stretches of an otherwise dry stream-bed may have flowing water because the water table rises to intersect the land surface.
在河流下游，由于流速变缓，泥沙(等沉淀物)自然而然地堆积在河床中，曾经造成黄河经常改道。
In the lower reaches, where the current slows, the natural accumulation of sediment in the riverbed has caused the river to change course often in the past.
影响汇流口的主要控制因素有：汇流比、汇流角、河床高差、宽深比、汇流口下游干流弗劳德数等。
All of them are controlled by following factors: discharge ratio, junction Angle, difference in bed height, width to depth ratio and Froude number downstream the confluences.
黑河下游河道都是天然河道，断面不规则，属宽浅型沙质河床，河道渗漏量大。
The river courses in the lower Heihe river are all natural ones with irregular cross sections and great seepage, belonging to broad-shallow type of sandy riverbed.
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 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.
大量的泥沙淤积在下游河道，河床逐渐淤高，是渭河下游水患威胁严重的根本原因。
A great quantity of sediment deposited on the lower river course and riverbed gradually raised and suspended is the essential reason of severe threatening of floods in the lower Weihe river.
三峡水库建成后，长江中下游河道将遭受长河段、长时期冲刷，河床河性会发生很大变化。
After completion of the Three Gorges Project, a long time erosion will occur in the middle and lower reaches of Yangtze river, and the characteristics of river channel will be changed obviously.
从河势流路稳定性和河床稳定性等方面分析了黄河下游游荡型河道整治对河势的控制效果。
The paper analyzes the effects of river training conducted at meandering channel of the lower Yellow river from the aspects of the stability of river regime, channel bed and flow path.
结果表明，在黄河上修建大型水利枢纽工程对减轻黄河下游河道淤积，遏制河床抬升具有明显作用。
The observation data of the Sanmenxia Project are used to further analyze the relationship between the project's operation modes and fluvial processes of downstream river section.
本文根据丁坝作用后水槽中水流情况，采用动量方程结合试验资料，导出了丁坝下游主槽平均流速沿程变化的公式，以此为基础，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.
南昆铁路家竹菁隧道出口至放马坪垭口沿段家河下游盲谷一段线路，存在泥石流及河床淤涨两大潜灾。
The exit of Jia Zhu Qing tunnel in Nanning-Kunming Railway lies to Fang Ma Ping section where both debris flow and siltation are potential hazards affecting long-term safety of the rail way.
本文根据黄河主要干支流冲积河段实测高含沙洪水的输沙资料，从黄河下游河道比降、河宽、流速沿程调整、洪水非恒定性等方面分析研究了冲积河道输沙特性与河床冲淤特性。
The variations of slope and width, adjustments of flow velocity along the river course as well as the variability of flood in the Yellow River are analyzed based on the observation data.
本文根据黄河主要干支流冲积河段实测高含沙洪水的输沙资料，从黄河下游河道比降、河宽、流速沿程调整、洪水非恒定性等方面分析研究了冲积河道输沙特性与河床冲淤特性。
The variations of slope and width, adjustments of flow velocity along the river course as well as the variability of flood in the Yellow River are analyzed based on the observation data.
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