冲淤变形,scouring and sedimentation deformation
1)scouring and sedimentation deformation冲淤变形
1.A mathematical model for the calculation of sediment at the tail of tributary under condition of flow backwards is established, and the model is used to simulate thescouring and sedimentation deformations of the riverbed at a tributary of Yangtze River, Juzhang River, in this paper.建立了水流倒灌下支流尾闾河段泥沙冲淤数学模型,并利用该模型对长江支流沮漳河尾闾河段的河床冲淤变形进行了模拟。
英文短句/例句
1.The Sedimentation Deformation Calculation by Quasi-2D Numerical Simulation in the Qingtongxia Reservoir;青铜峡水库泥沙冲淤变形准二维数值模拟计算
2.Effect of lateral inflow on main flow characteristics and river bed deformation旁侧入流对绕体流动与河床冲淤变形的影响
3.Study on Longitudinal Deformation of River-Crossing Shield-bored Tunnel Caused by Riverbed Scouring and Siltation河床冲淤引起过江盾构隧道纵向变形的研究
4.THE APPLICATION OF COMPUTER IN RESEARCH OF RIVER BED AND LANDFORMS--COMPUTE THE SILTATION CONTENT AND LANDFORM MAP DRAWING河床地貌演变研究的计算机方法——河床冲淤计算和地形图绘制
5.Seabed evolution prediction and application on muddy coast under action of tidal current潮流作用下淤泥质海床冲淤演变预测及应用
6.Analysis of Recent Evolution of Yangtze Estuary Based on GIS;基于GIS的长江河口近期冲淤演变分析
7.Study on Dynamical Sedimentation and Erosion-deposition Evolution of Yellow River Delta;黄河三角洲动力沉积及冲淤演变研究
8.The Investigation about the Relation between Lake Evolution and Vegetation Distribution of Muping Lake;目平湖冲淤演变与植被分布关系研究
9.Temporal and Spatial Variation of Erosion-Deposition and Morphological Evolution of the Huanghe Delta Based on Numerical Model and Statistical Model;基于数值模型和统计模型的黄河三角洲的冲淤时空变化分析及形态发育趋势探讨
10.Retrieval and Analysis of Elevation at Mudflat Using Remote Sensing;长江口淤泥质潮滩高程遥感定量反演及冲淤演变分析
11.Changes of sediment deposition and erosion at Chongqing reach in backwater area of Three Gorges Project after reservoir adjusting of the upstream in the Yangtze River水沙调节后三峡工程变动回水区泥沙冲淤变化
12.Study on Consolidation Properties and Deformation Mechanism of Marine Ooze;海相淤泥的固结特性及变形机理研究
13.Research on Scouring and Silting of Seabed in Front of Breakwaters by Waves波浪作用下堤前冲淤形态的数值模拟研究
14.Contrast study on Estimation of River Deposition-Erosion Amount by Sediment Budget Method and Morphological Change Method输沙量法与地形法估算河道冲淤量的对比研究
15.Analysis on Channel Deposition-Scouring Based on GIS;基于GIS技术的泥沙冲淤及河床演变分析
16.Study of Topography Evolution Process in Nanhuizui Tideland and Adjacent Seabed;南汇嘴岸滩及邻近海床冲淤演变过程研究
17.Study on the Evolution of River Bed Scour and Siltation in the Reservoirs of Rubber Dams in Chan-Ba Ecological District;浐灞河生态区橡胶坝库区泥沙冲淤演变研究
18.Erosion and Sedimentation in Sanmenxia Reservoir in Recent Years;三门峡水库近期河道冲淤变化及其原因
相关短句/例句
topography changes地形冲淤演变
3)scouring patterns冲淤形态
1.Thescouring patterns of sandy bed in front of breakwaters under the action of irregular broken clapotis were investigated by experiments conducted in a wave flume on conditions of different water depths, different wave spectrum, different sand size and different seabed slop.通过水槽试验,研究了不规则破碎波作用下不同水深、不同波谱、不同粒径和不同海床坡度情况下堤前沙质海床的冲淤形态,按照波作用和泥沙粒径的相对关系,将其分为5种类型:堤前冲刷Ⅰ型、堤前冲刷Ⅱ型、堤前冲刷Ⅲ型、堤前淤积Ⅰ型和堤前淤积Ⅱ型,并分析了各种冲淤形态的形成过程。
4)siltation and erosion changes of topography地形冲淤
5)change in scour and silting冲淤变化
1.Based on measured station year data of flow and sediment at control hydrologic stations and station year data interploated and exted-ed, studies on riverbed evolution andchange in scour and silting of sediment were carried out by means of such methods as sediment transport balance, historical evolution of river section and correlation of sediment between upstream and downstream.应用控制水文站站年的实测水沙资料及插补、延长所得站年资料,采用输沙平衡法、河流横断面历史演变法、上下游沙量相关法进行了河床演变分析和河流泥沙冲淤变化研究。
6)erosion and deposition冲淤变化
延伸阅读
水利工程水力冲淤水利工程水力冲淤hydraulic sluicing sediment of water projectshuili gongeheng shuili ehongyu水利工程水力冲淤(hydraulie sluieingsediment of water Projeet)利用水力减少或清除水库、河道、航道和水闸等水利工程设施受水流泥沙作用所产生的淤积的措施。水利工程产生淤积是水土流失和河流输沙受阻、流速降低的直接结果。泥沙淤积，使工程效益降低，甚至失去作用。在工程规划设计时，即应采取各种防沙、冲淤措施。工程投入运行使用后，作好防沙、冲淤处理:是工程管理的主要内容之一。泥沙，一方面对水流运动有抗拒性;另一方面受水流作用又有可动性。流速小时泥沙淤积，流速大时发生冲刷。因此，改变水流条件、增大流速，利用水流清除泥沙淤积，是处理泥沙淤积的经济有效途径。水库水力冲淤①蓄清排浑。根据河流来水来沙不平衡的特点，多沙河流水库，可采用“蓄清排浑”的运用方式。非汛期来沙少，采取蓄清拦沙运用;汛期来沙多，降低库水位(或敞泄)排沙。使水库年内冲淤基本平衡，保持一定的兴利库容，长期使用，以发挥综合利用效益。黄河三门峡水库，初期蓄水拦沙运用，1960年9月到1964年10月.高程朋。米以下库区淤积严重，后加大泄洪设施，并改为蓄清排浑运用，水库年内冲淤基本平衡。②异重流排沙。水库蓄水期间，当洪水具有产生异重流的条件时，洪水入库后，细颗粒泥沙将以异重流形式潜入库底向坝前运动。及时开闸泄流，可将部分入库泥沙排出库外。异重流排沙效果与洪水流量、含沙量、粒径组成，泄量、开闸时间及库区地形等因素有关。汛期调洪时，要加强异重流观测。当异重流到达坝前时，及时开闸，并随时调整泄量，以提高异重流的排沙效果。异重流排沙能力有限，一般只能缓和水库淤积的速度.不能解决水库淤积问题。③泄空排沙。在水库泄空过程中，回水末端逐渐向坝前移动，因而原来淤积的泥沙，将因回水下移，恢复自然河道而产生冲刷。在泄空的最后阶段，应加大泄量，使库水位骤降，以增大冲刷效果。水库泄空排沙，通过两种方式进行，即变动回水区以下的沿程冲刷及三角洲前坡和顶坡的溯源冲刷。沿程冲刷可消除回水末端的淤积;溯源冲刷，逐渐向上游发展，为冲刷的继续发展创造条件。中小型水库泄空冲刷过程中，可以利用人工或机械将主槽两侧的泥沙推进主槽，或在主槽内进行人工或机械搅动，均可增大泄空冲刷的排沙效果。④中小型水库水力吸泥。利用水库上下游水位差，将库内淤积泥沙吸出，排出库外，是清除水库淤积的一种排沙措施吸泥装置，由操作船、吸泥管路及吸头三部分组成。操作船拖着吸头在泥面上移动。
