overfall

Experimental Study and Stable Analysis of Overfall Concrete Face Rockfill Dam

溢流面板堆石坝试验研究与稳定分析

Free overfall is a basic hydraulic phenomenon in nature and engineering .

自由跌水是一种在自然界以及工程应用上普遍存在的水力现象。

Development of an Overfall Valve with Preset Pressure Value Mechanism

可知设定值式溢流阀的研制

Analysis of Impact of Pneumatic Overfall on Infrared Detector 's Ability

气动湍流对红外寻的导弹探测性能影响的分析

Discussion of Braking Force and Deceleration Degree of Safety Catch and Overfall

对防坠器及防过放制动力与减速度的探讨

Surveying practice in concrete construction of overfall dam

溢流坝段混凝土建筑物施工测量实践

A new control system of an alterable overfall gate , which used in the tide model was introduced .

介绍了一种新开发的基于可变溢流设施生潮方式的尾门控制系统。

Application of overfall weir in crossing of wastewater and rainwater pipelines

溢流堰在污雨水管道交叉处理中的应用

Overfall Equipment Design of CHUANG YE YI HAO Rebuilding Ship

创业一号改建船溢流装置的设计

Application of Slotting Demolition in Overfall Dam of the Second-Stage Construction of the Three Gorges Project

掏槽爆破在三峡二期工程溢流坝段的应用三峡工程的几个历史瞬间

If it is not timely found , the copper pipe will fracture and the water will be overfall .

如不及时发现，铜管就会破裂，水外溢。

Hydraulic Character of Free Overfall

自由跌流的水力特性

The overfall can expand the joints , and the line of air vents can show necklace image .

溢流会造成焊缝区域扩大；而连成线的气孔会显示出线状珠子图像。

The Overfall Pulse and Vibration of Powerstation Workshop

厂房顶溢流的脉动与振动

The major load which brings about vibration of workshop is pulse by overfall . The vibration and it 's safety determine whether the new structure is suitable .

引起溢流厂房振动的主要荷载是在厂房顶渲泄高速水流时产生的脉动，脉动荷载引起溢流厂房振动与安全是决定这种新型的水电厂房结构成立与否的重要课题。

This paper introduces the structure , work laws and process of overfall valve and rotate speed control valve in a lately devel oped cleaner .

介绍新研制的一种新型清洗机所采用的调压溢流阀和转速调节阀结构、原理及工作过程。

Design of pipes such as intake pipe , overfall pipe and drainage pipe of storage reservoir or water tank in building water system cannot often meet the fact according to the experiments .

水箱或水池的泄空管、溢流管以及从市政给水管网直接进水时水箱和水池的进水管管径常常采用经验的方法来确定，有时会出现设计管径不满足实际的情况。

The measures were indicated that increase waterpower machine and accretion water velocity of flow in boat bottom and tail , and laminose overfall drainage water become trapezia .

提出通过增加水力机械，增大船底水流速，进而增大船尾进水流速，并将船出水平流堰改进为梯形溢流堰等措施，提高船式沉淀器的处理效果。

Propagation rules of near ground sources are analyzed carefully , consist of several influent factors : propagation attenuation , reflection on the ground , temperature grads and atmosphere overfall , etc.

本文详细分析了近地声源的传播规律，包括传播衰减、地面反射、温度梯度和大气湍流等影响因素。

Yushugou reservoir project is built in our country , it is the first overfall Concrete Face Rockfill Dam ( CFRD ) which has been carried out flood discharge .

榆树沟水库工程是我国建成并过流的第一座溢流混凝土面板堆石坝。

As an example , the approach is applied to the overfall segment 23 ~ # of a gravity dam and the elastic modules of dam body and the deformation modules of dam foundation are inverted .

结合某重力坝23溢流坝段的安全监测资料，利用该方法反演得到了该大坝坝体弹性模量和坝基变形模量。

This paper analyses several kinds of probable hydraulic pump station type of XXJ300 / 500 hydraulic energy-storing workover rig , and points out that using variable pump is an economic and easy way of avoiding overfall loss .

该文从XXJ300500液压蓄能修井机的原理出发，探讨分析了该机可能的几种液压泵站形式，指出采用变量泵是一种经济、方便的避免溢流损失的方式。

Now people come up with the conception of overfall spillway , it means we can put the spillway directly on the top of the Earth-rockfill Dam to predigest the layout of hydroproject and reduce construction cost .

对此有人提出坝顶溢洪道的想法，即把溢洪道直接布置在土石坝坝顶，以简化枢纽布置，节约工程造价。

The fluid streamline and pressure distribution and velocity vectogram of the flow in hydrocyclone are given in this paper , and the effects of variation in parameters ( flow rate , inlet pressure and diameter of overfall pipe ) on separation efficiency are studied .

通过数值计算得到了水力旋流器内流体流动的流线图、等压线以及速度矢量图，并且研究了不同参数（分流比、进口压力以及溢流管直径）对分离效率的影响。

During the operation of hot press , because there was hysteresis characteristic in the proportional overfall valve , the regular control of press was not very clear , we used " PID-FUZZY " control policy for the hot press , got good results from the simulation operation .

针对实验压机运行过程中存在的由比例溢流阀的滞环效应所引起的常规控制方式对压力控制效果差的问题，采用PID-FUZZY控制策略对热压压力进行调节，模拟运行并取得了良好的效果。

To avoid the damage to economization coal implement resonance in running , the theory that flowing liquid causes the vibration is applied to analyse that the vortices break frequency and overfall vibration frequency should be avoided in the course of ash blow and dust removal .

为了避免锅炉省煤器在运行中产生共振引发的危害，应用流体诱发振动的原理分析了在吹灰除尘过程中应尽力避开漩涡脱落频率fw与湍流抖振频率fb的观点。