过水断面

ArgonautSL在某隧洞过水断面水文测验中的应用

Application of Argonaut SL to the Hydrometer of Flow Section in a Certain Tunnel

半椭圆薄壳渡槽过水断面简捷设计方法

The simple design calculation of cross section of semiellipse thin-shall aqueduct

整治采取的主要措施有：筑坝壅水、改善流态、开挖河槽等等，对于流态恶劣的急流滩，常采用开挖河槽扩大过水断面面积的方法来降低航道流速。

The main measures are : damming improving flow condition riverbed excavation etc.

柔性渡槽过水断面的简捷水力计算

Simple hydraulic calculation of flow sections for flexible aqueducts

用途：适于河流，渠道采取过水断面预定测点的悬移质水样。

Application : Applicable to take sediment sample in shallow stream or channel .

渠道过水断面水力简捷计算

Shortcut Calculation for Discharging Capacity of Canal Flow Section

标准门洞型过水断面水力计算方法的简化

Simplification of hydraulic calculation method of the cross section for standard door type tunnel

马蹄形过水断面是无压输水隧洞中常采用的断面形式之一，因其几何形状复杂，水力计算困难。

It is difficult to calculate normal water depth of horseshoe cross section , because its complex geometrical shape .

列举了岩溶裂隙水，冲积含水层，断层强过水断面测定的应用实例。

Practical examples of the the determination of karstic fissure water , alluvium aquifer and strong water-carrying section are also given .

鱼骨坝束窄了河道过水断面，引起坝体两侧水流流速的增大，坝田内流速则大幅度减小；

Alongside the dike , the flow velocity gets larger , and it is on the contrary in the dike field .

为此，必须尽快扩大高集海堤的过水断面，恢复西海域生态平衡。

For all of these , quick action should be taken to widen the water-crossing section of Gaoji seawall to renew back ecological balance .

进一步引入尾流函数进行分析，得出拟合曲线交点流速值近似等于过水断面的平均流速；

Further analysis of the introduction of wake function , the velocity of point fitting curve obtained is approximately equal to the average cross section velocity ;

梯形渠道的水力最优断面因为具有在过水断面面积一定时通过的流量最大的特点，是水利工程中一种常见的渠槽形式，它的断面设计需求解一个很复杂的高次方程。

Trapezoid channel is a common form in hydrological project with characteristic of maximum influx at a certain time , its section designing requires a complex equation of higher degree .

但由于紊流本身结构的复杂性和过水断面、粗糙形式的多变性，即使简单的明渠流动，对其流动的描述目前还不尽完善。

However , since the turbulence structure is complicated and cross section and roughness forms are changeful , the description of the flow , even the simple open-channel flow , is not satisfying .

普通城门洞形过水断面是泄洪隧洞和灌溉引水隧洞较常采用的断面形式之一，其水力计算中的正常水深求解无显函数形式的表达公式。

The arched section is one of the usually adoptive section shapes in flood discharge tunnels and irrigation tunnels , but the analytic expression of normal water depth for this section is not explicit .

在数值模拟槽中，桩基区域用本研究中物模所得的附加糙率系数代替桩基，水深也按过水断面相等原理修正。

Within the numerical simulation flume , the pile group has been replaced by the additional roughness coefficient obtained from the physical model tests in pile foundation region , and the water depth has been revised according to the principle for equality of flow section as well .

试验研究揭示，主河槽宽度缩窄造成洪水水位涨幅增大，河底平均高程抬升和过水断面面积减小造成洪水水位起涨的基准面抬升是河道萎缩致灾的主要原因。

The increase of the amplitude of the flood water level rising caused by the narrowing of main channel , the raise of mean elevation of the river bed and the elevated datum level at young flood caused by wetted area reduction are the main causes affecting the disaster-causing effect .

圆形明流短洞过水能力及最小断面尺寸的计算

The Calculation for Discharge Capacity and Minimum Cross-Section of Short Circular Unfull Tunnels