1)seepage monitoring渗流监测
1.Application of Support Vector Machine to dam seepage monitoring;支持向量机在大坝渗流监测中的应用
2.Application of optical-fibre sensors to seepage monitoring of earth dam of Xikeng Reservoir;光纤传感器在茜坑水库土坝渗流监测中的应用
3.Analysis on seepage monitoring result in TGP s ship lock and its high slope;三峡工程双线五级船闸及其高边坡渗流监测成果分析
英文短句/例句
1.The Design of Dam Seepage Monitoring System and the Seepage Simulation with Computer;大坝渗流监测系统设计及渗流计算机模拟
2.Study on Seepage Monitoring Data Analysis of Earth-rockfill Dam;土石坝渗流监测资料分析方法的研究
3.Seepage Monitoring Model and Safety Alarm Analysis of Ash Storage Dam;贮灰坝渗流监测模型与安全预警分析
4.Analysis on the seepage monitoring data of Sanbanxi face-slab rock-fill dam三板溪面板堆石坝渗流监测资料分析
5.STUDY AND PRELIMINARY ANALYSIS OF RESULTS OBSERVED SEEPAGE OF GAOXI IMPOUNDING DAM高溪水库大坝渗流监测成果的初步分析研究
6.Monitoring analysis on the seepage at curtain zone in permanent ship lock of TGP三峡工程永久船闸帷幕区渗流监测分析
7.Analysis of monitoring results for seepage in foundation of?Anqing section of Changjiang dike安庆长江江堤堤基及堤后渗流监测成果分析
8.Stepwise Regression Method for Seepage Monitoring Data Analysis of Earth-rock Dams土石坝渗流监测资料分析的逐步回归分析方法
9.Displacement and Seepage Monitoring Analysis for Huanren Massive-head Single-buttress Dam桓仁单支墩大头坝位移及渗流监测分析
10.Monitoring and simulation analysis of earth-rock dam seepage at Tongbo Pumped Storage Power Station桐柏抽水蓄能电站土石坝渗流监测及模拟分析
11.Seepage data analysis based on principal component analysis and BP neural network基于主成分分析与BP神经网络模型的大坝渗流监测资料分析
12.It is generally recognized that the seepage monitoring is one of key items of dam safety monitoring.渗流监测是大坝安全监测的一个关键项目,对保障大坝安全具有重要意义。
13.The analysis about the data of curtain grouting, pressure water test and monitoring on seepage flow shows that the plan is conforming to the actual situation, and their construction quality is quite well.介绍了设计内容,并对帷幕灌浆资料、水试验资料和渗流监测资料也进行了分析。
14.Leakage prevention of earth-rock dam:safety monitoring technology and its application土石坝渗流安全监测技术及工程应用
15.The Seepage Computer Monitoring and the Monitoring Date Analyzing of Lian Hua Dam;莲花大坝渗流计算机监测及观测数据分析
16.Monitoring Seepage Flow in Xilongchi Reservoir by Distributed Fiber Optic Temperature Sensor System分布式光纤测温系统在西龙池水库监测渗流
17.Material Analysis and Auto-Supervision for Seepage Safety of Main Dam in Shilianghe Reservoir石梁河水库主坝渗流安全自动监测与资料分析
18.Monitoring of corrosion rate of steels in marine atmosphere by hydrogen permeation current investigation氢渗透电流法监测海洋大气中钢材的腐蚀速率
相关短句/例句
seepage safety monitoring渗流安全监测
1.Genetic support vector machine model for seepage safety monitoring of earth-rock dams;土石坝渗流安全监测的遗传支持向量机方法
3)seepage monitoring technology by measuring temperature渗流热监测技术
4)dam seepage monitoring大坝渗流监测
5)leakage detection渗漏监测
1.The water leakage detection of the system is typically a problem of weak signal extraction under strong disturbances.发电机内冷水系统是发电机组安全运行的一个重要组成部分,其渗漏监测是在强干扰下弱信号的识别问题。
2.The article briefly introduces seven methods used for underground tanks leakage detection recommended by EPA, five of these methods have been compulsively put in practice since December 1998.系统地介绍了美国环保局推荐的埋地油罐系统渗漏监测的7种方法,其中的5种每月监测方法在1998年12月以后已经在美国强制实施,了解和认识这些方法,对于引进或自主研发先进的渗漏监测设施,提升国内加油站渗漏监测技术和管理水平,具有一定的借鉴作用。
6)leakage monitoring渗漏监测
1.Discussion on mechanism of distributed fiber optical leakage monitoring technology based on temperature measurement;基于温度测量的分布式光纤渗漏监测技术机理探讨
2.The distributed optical fiber temperature sensing technology is a brand-new way for leakage monitoring.分布式光纤温度传感技术为渗漏监测提供了一个全新的方法。
3.Based on persistent line heat-source,the basic principle of distributed fiber optic sensing technology for leakage monitoring is expounded.在简述分布式光纤传感技术测温原理的基础上,从三维微元体传热过程出发,推导了具有渗漏和内热源的多孔介质传热微分方程,给出了基于温度测量的分布式光纤渗漏监测技术的不同监测方法的监测方程。
延伸阅读
达西渗流定律 流体在多孔介质内运动的基本规律,也是从宏观角度描述渗流过程的统计规律。这个定律是1856年法国水利工程师H.-P.-G.达西为解决水的净化问题从大量实验中总结出来的。达西对水通过均匀砂层的缓慢流动作了大量实验,研究表明:单位时间流过砂层的体积流量Q与横截面积A、测压管水头差h1-h2成正比,与流过的砂层长度L成反比: 式中Q/A=v为渗流速度;(h1-h2)/L=J为水力坡度。上式也可写成: v=KJ, (1) 式中 K为标志渗流能力大小的实验常数,称为渗透系数。它既与砂层的结构有关,又与流过的流体性质有关。由量纲分析知,,其中ρ、μ分别为流体的密度和动力粘性系数;g为重力加速度;k称为介质的渗透率。式(1)又可写作: 。 (2)式(1)或式(2)都是达西渗流定律,它表示渗流速度与水力坡度呈线性关系,故称达西线性渗流定律。 实验发现,随着雷诺数Re的增加,多孔介质中的流动状态经历三个区域:①线性层流区:粘性力占优势,达西定律成立,上限约在Re=10左右;②非线性层流区(过渡区):为主要被惯性力制约的层流,达西定律不成立,上限约在Re=100左右,在上限附近开始有层流到湍流的过渡;③湍流区:惯性力占优势,达西定律不成立。由此可见,从上限雷诺数方面偏离达西定律与层流到湍流的过渡不是完全等价的。 在渗流速度很低时,流体与介质间的表面分子力作用显得更为重要。部分液体的滞流现象使孔隙度发生变化,从而引起渗透率的相应变化。实验表明,这时孔隙度和渗透率均随渗流速度的增加而增加,速度到某一临界值后不再变化,因此不遵循达西定律。 在雷诺数大于上限Re数的情况下,应该用"渗流的二项式定律"代替达西定律,即 J=Av+Bv2, 式中A、B为决定于流体和介质性质的常数。 在雷诺数小于下限Re数情况下,非线性渗流定律的一般形式可写为: , 式中f(J)为小雷诺数情况下渗透率随水力坡度的变化函数关系,由实验确定。 以上主要是单相流体达西渗流定律;对于多相流体,达西定律对每一相仍然成立,只需将渗透率修正为该相的相渗透率即可。 参考书目 J.Bear, Dynamics of Fluids in Porous Media,American Elsevier,New York,1972.