河道洪水,flood in river course
1)flood in river course河道洪水
1.Calculation offlood in river course flowed by many tributaries;多支流汇入的河道洪水演算
英文短句/例句
1.Studied on FeiLaixia to Shijiao of Channel Flood Routing Methods;飞来峡～石角河道洪水演进方法研究
2.The Study and Application of River Flood Mathematical Model;河道洪水数值模拟理论的研究与应用
3.Study on the Effect of Channel Leakage on Flood Routing of Dagu River大沽河干流渗漏对河道洪水演进的影响研究
4.Application of Neural Network in Channel Flow Forecasting神经网络理论在河道洪水预报中的应用
5.Study on the Problem of Flood Management and Control in the Reservoir and its Downstream Channel;水库及其下游河道洪水管理控制问题的研究与应用
6.The riverbed is silted up, so there"s no outlet for the floodwater.河道淤塞，洪水无出路。
7.The Evaluation of the Capacity of Flood Control of Water Intake Engineering and Flood Discharge of Watercourse of Ningxia Zhongning Electric Power Plant;宁夏中宁电厂取水工程防洪及河道行洪评价
8.Storm Flood Analysis of Shangdaone River in July,19811981年7月三道河子暴雨洪水分析
9.Test Study on the Upstream Partof Side Channel Spillway and Stepped Spillway of the First Step Hydropower Stationin in Gang-Qu River;岗曲河一级水电站侧槽溢洪道上游部分及台阶溢洪道试验研究
10.Research and Application on Flood Wave Advance Numeric Modeling of One-dimension and Two-dimension of Rivers and Flood Detention Area;河道、滞洪区一二维洪水演进数学模型的研究与应用
11.Research on Numeric Modeling of Flood Propagation and Flood Risk Assessment of Rivers and Flood Detention Basin;河道、滞洪区洪水演进数值模拟与风险评估的研究
12.The deposition of sediment in our natural stream channels has greatly aggravated floodwater damages.泥沙淤积在天然河道，已大大加剧了洪水的危害。
13.Study on Method of Real-time Flood Forecasting of Braided River and Its Application;分汊河道实时洪水预报方法研究及应用
14.Application of Automatic Monitoring System in Flood Control and Drainage of River Channel & Water Sluice自动监控系统在河道水闸防洪排涝中的应用
15.Flood waters poured through a 380-foot gap in the embankment of the swollen Zhuma River.涨水的珠玛河河堤打开了一道380英尺宽的缺口，洪水从这里冲了来。
16.Experiment study on flood river shape and bed deformation of building large narrowing project from Yiluohe River to Jingguang railway bridge伊洛河至京广铁桥河段修建大型河道缩窄工程洪水期河势和河床及河床变形试验研究
17.The river was swollen with flood water.洪水到来後河水上涨了.
18.Impact of the Lawer Weihe River Channel Sedimentation and Shrinkage on the Characteristics of Flood Routing;渭河下游河道淤积萎缩对洪水演进规律的影响研究
相关短句/例句
flood channel洪水河道
3)river channel flood forecasting河道洪水预测
4)channel flow routing河道洪水预报
5)river flood routing河道洪水演算
6)flood routing in watercourse河道洪水演进
1.Numerical simulation offlood routing in watercourse and its visualization on GIS platform河道洪水演进数值模拟及其在GIS平台上的可视化
延伸阅读
河道洪水演算法河道洪水演算法flood routing method in a riverhedao hongshui yansuanfa河道洪水演算法(flood routing methodin a river)从河道上断面已知流量过程演算出下断面流量过程的方法。它的实质是求解圣·维南明槽缓变非恒定流微分方程组(见明槽非恒定流)。目前尚无解析解，实践中常用简化的计算方法。可分为两大类:即水力学演算法和水文学演算法。水力学演算法有特征线法、瞬态法、直接差分法、有限元法和边界积分方程等，计算较繁，其中微幅波理论法假定由于波动所引起的各种水力要素的变化都是微小量，它的乘积或平方值均可略而不计，这样就将圣·维南方程组化为一维线性常微分方程来求解。水文学演算法常以线性蓄泄概念为依据，而不直接考虑水流阻力影响，它采用线性槽蓄方程来代替圣·维南方程组的动力方程，用水量平衡方程代替其连续方程。即:槽蓄方程 S=f(I·O)水量平衡方程_ds1一U之一几了J dt式中I、O、S分别为河段入流、出流和槽蓄量;t为时间。联解上式可求得出流过程的公式，这是各种水文学演算法的基础。这类方法应用较广泛，如马斯京根法、特征河长法和滞后演算法，都可从它推导出来。20世纪60年代利用系统分析方法，推导出上式的汇流曲线进行洪水演算。河道洪水演算法应用于洪水预报时，并无预见期，只是作为将降雨径流预报的过程或河段入流转化为出流的一种计算手段。河道水流运动本质是非线性系统。圣·维南方程组就是非线性的，可直接求得圣·维南方程组的数值解，或用简化的非线性蓄泄关系代替动力方程，进行非线性分析。
