冲淤调整,scour and fill regulation
1)scour and fill regulation冲淤调整
1.The paper analyzes the characteristics of sediment and discharge and its influence to channelscour and fill regulation in normal water period of flood season of the lower Yellow River.对黄河下游汛期平水期的水沙特点及其对河槽冲淤调整的影响进行了分析,结果表明:汛期平水期进入黄河下游河道的平均含沙量小于15 kg/m3、水沙搭配系数小于0。
英文短句/例句
1.Adjustment mechanism on the erosion and accretion of riverbed in the Jiaojiang Estuary in Zhejiang Province,China近70a来椒江河口河床冲淤调整机理
2.Analysis on Channel Scour and Fill Regulation in Normal Water Period of Flood Season of the Lower Yellow River黄河下游汛期平水期河槽冲淤调整分析
3.Study on the Channel Evolution Analysis and Regulation Plan at the Middle and Lower Reaches of Liao River辽河中下游河道冲淤分析及整治规划研究
4.Study on the Hydrodynamic Environment and the Erosion and Deposition Environment of the Sand Beach Regulation Projects in the South Area of Weihai Bay;威海湾岸滩整治工程的水动力及冲淤环境研究
5.Discussion on Joint Operation of Diverting Water from the Yangtze River and Reducing Sedimentation in Channels of Lixiahe Region试论里下河地区引江冲淤保港之联合调度
6.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
7.Disilting Analysis for the Regulating Reservoir of Wanjiazhai Yellow River Diversion Project Connection Works;万家寨引黄工程联接段调节水库泥沙冲淤分析研究
8.FEATURES AND REGULATION OF HIGH-SEDIMENT FLOODS IN THE LOWER YELLOW RIVER黄河下游高含沙洪水冲淤特性及其调控对策初探
9.Hebei Province Mud Quality River Mouth is Incorporated Tide Rush Silt Add Drag Silt Prevent Silt Test Research;河北省泥质河口纳潮冲淤加拖淤的研究
10.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
11.produced or transmitted or modulated in short bursts or pulses.用短的脉冲产生、传送和调整。
12.pilot burst phase adjustment导频色同步脉冲相位调整
13.Structural Adjustment of Education Public Governance in Values Conflict;价值冲突中的教育公共治理结构调整
14.Harmonious Society: Coordination and Combination of Interest Contradiction and confliction;和谐社会:利益矛盾与冲突的协调整合
15.The Interest Conflicts Revealed in the Resettlement of the Inhabitants for Urban Construction and the Possible Adjustments;城市建设拆迁中的利益冲突及其调整
16.Impact of Financial Crisis and Russia′s Energy Policy Adjustments金融危机冲击与俄罗斯能源政策调整
17.Harmony Research on Confliction between Jiangsu Industry Structure Adjustment and Food Security;江苏产业结构调整与粮食安全冲突的协调探析
18.The harbor has been sanded up by the tides.那港囗因潮水冲积的泥沙而淤塞。
相关短句/例句
adjustment of erosion and deposition冲淤调整趋势
3)desilting operation冲淤调度
4)erosion adjustment冲刷调整
1.Influence of riverbed boundary condition onerosion adjustment of strong-restriction braided reach河床边界条件改变对强约束型分汊河道冲刷调整的影响
2.On the basis of the erosion characteristic,theerosion adjustment law of braided reach in the downstream reservoir under strong and week constraint conditions is analyzed.在研究分析水库下游河道冲刷侵蚀特点的基础上,分强约束型和弱约束型分汊河道,分别研究其冲刷调整的规律。
5)scouring and desilting冲淤减淤
6)scour and silting冲淤
1.Based on the one dimensional sediment mathematical model,sedimentscour and silting in the lower Yellow River after Xiaolangdi reservoir operation are researched;therein the change law ofscour and silting in the river reach of Aishan to Lijin is analyzed emphatically.运用一维泥沙数学模型 ,对小浪底水库运行后黄河下游河道泥沙冲淤进行模拟研究 ,其中着重分析艾山～利津河段的冲淤变化规律 作者认为小浪底水库可使黄河下游总体上保持 2 0年不淤 ,5 0年内相对减淤率为 5 1 6% ;艾山～利津河段也有减淤效果 ,但相对减淤率仅为全下游平均值的 5 7% ,河床抬升速度仍然较
2.The study results of the reactive effect of the Yellow River delta changes on its estuarine course and the delta development model are introduced, the emphasis is placed on the factors affecting the Yellow River delta formation and the evolution process ofscour and silting, and it is confirmed that the numerical computational method, remote sensing and GIS .重点评述了黄河三角洲的形成影响因素和冲淤演变过程,肯定了数值计算方法和遥感与GIS技术已经成为定量计算与半定量分析黄河三角洲冲淤演变的重要研究手段。
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。
