水沙输移,water and sediment transportation
1)water and sediment transportation水沙输移
1.The paper studies the characteristics and the affecting factors ofwater and sediment transportation in Panlong River since 1951.研究了盘龙河自1951年以来的水沙输移特性与影响因素。
英文短句/例句
1.Study on 3D numerical modeling of suspended sediment transport in the deep bay,Shenzhen三维水沙输移模型对深圳深水湾水沙输移的研究
2.Characteristics of Water and Sediment Transportation and Affecting Factors of Panlong River盘龙河水沙输移特性及影响因素研究
3.Sediment Transport Characteristics of Hyperconcentration Flood of the Yellow River and its Bed Formation黄河高含沙量洪水的输移特性及其河床形成
4.Two-D Simulation of Sediment Transport and Bed Deformation by Tides潮汐水流泥沙输移与河床变形的二维数学模型
5.Determination of Bed Load Transport Rate of Gravel Bed by Simulation of Flume Experiment用水槽模拟试验求卵石河床推移质输沙率
6.Flow Resistance and Sediment Transport in Compound Channels;复式河槽水流阻力及泥沙输移特性研究
7.Study on the Character of Flow and Sediment Exchange and Transport between Changjiang Estuary and Hangzhou Bay;长江口、杭州湾水沙交换与输移特征研究
8.Analysis of Sediment Discharge Evolution of Suspended Load in Dongtinghu Region in Dry Season洞庭湖区枯水季节河流悬移质输沙量演变分析
9.Relationship between ion transport and sediment discharge in river河流水化学特性与流域泥沙输移的相关性研究
10.Transportation laws of salinity with flow in the Lanmensha area of the Yangtze River Estuary are discussed.探讨了长江口拦门沙地区盐度随水流的扩散输移规律。
11.Numerical simulation of sediment transport in discontinuous shallow water flows with triangle grids基于三角形网格的浅水间断流动泥沙输移数值模拟
12.Gilbert speculates that the reason for this increase of transport rate is the reduction of friction losses by the presence of fine suspended material in the flow.吉尔勃特认为输沙率增加的理由，是水流中存在的细悬移泥沙将减少阻力损失。
13.Density currents generated by saline and fresh water interactions are also important in the transport of sediment in estuaries.由盐水和淡水相互作用所产生的异重流，在河口泥沙输移中也是很重要的。
14.Verification on formulas of bed-load sediment transport rate at the upstream of Yangtze River长江上游推移质泥沙输沙率公式的检验
15.Preliminary Study on Formulae of Bed Load Sediment Transport Rate in Downstream of Jinshajiang River金沙江下游支流河段推移质输沙率公式初探
16.Effects of incoming sediment on bed load transport in mountain streams来沙条件对山区河流推移质输沙的影响
17.The nominal diameter has little significance in sediment transportation.等容粒径在沉沙输移中意义不大。
18.Bottom Sediment Transport in the Flood and Ebb Channels of the Changjiang Estuary长江口涨、落潮槽底沙输移趋势探讨
相关短句/例句
unsteady flow and sediment transport非恒定水沙输移
3)water and sediment transporting输水输沙
1.The characteristics ofwater and sediment transporting in a compound canal is discussed and there is also a comparison of sediment transport capacity between trapezoid canal and compound canal.探讨了复式断面渠道的输水输沙特性,比较了梯形断面与复式断面的输水输沙能力,典型算例计算结果表明复式断面形态具有小水过小断面、大水过大断面的特点:小流量引水时复式断面水流归槽,提高了水流挟沙力,能够减轻渠道泥沙淤积;同时也能够满足大流量的要求。
4)sediment transport泥沙输移
1.Influence of flood wave type onsediment transport in lower reaches of Yellow River;黄河下游不同峰型洪水对泥沙输移的影响
2.Three-dimensional modelling ofsediment transport in the Pearl River Estuary;三维水动力泥沙输移模型及其在珠江口的应用
3.Study onsediment transport in the lower Yellow River during flood period;黄河下游洪水的泥沙输移特征
5)bed-load movement底沙输移
6)sediment transportation泥沙输移
1.Since the coast of the Bohai Bay is a typical plain silty one,the problems about engineering sediments,such as finesediment transportation and how to reduce silting amount for the port and waterway,have come across one after another in the construction of the Tianjin Port and the Huanghua Port of Hebei Province,the two largest artificial ports in China.文章以渤海湾西南部大口河沿岸海域现场观测资料为基础 ,通过近岸水动力、泥沙输移、岸滩沉积过程及冲淤演变等综合分析 ,为平原淤泥质海岸“浅水深用”的建港战略决策提供理论依
2.According to meteorological factor and underlying surface condition of the watershed both Jinsha river and Jialing river in Yangtze upstream river, the probability of Yangtze upstream river changing into second Yellow river are studied based on surface erosion,sediment transportation, water and soil loss, as well as human activity.从气象因素和下垫面因素出发 ,重点针对长江上游地区的金沙江和嘉陵江流域 2个主要产沙区地表侵蚀和河流泥沙输移特征、来水来沙条件 ,以及人类活动对水土流失的影响程度 ,分析了长江上游成为第 2条黄河的可能性。
3.?137)Cs──an artificial radioactive isotope which is resulted from weapons testing mainly in1950s and 1960s was used as a tracer in soil erosion andsediment transportation.运用２０世纪五六十年代大气核试验所产生的人工放射性同位素￣（１３７）Ｃｓ为示踪元素，分析了陕西省子长县黄土峁玻耕地￣（１３７）Ｃｓ的坡面分布特征，计算出该坡耕地土壤侵蚀模数６３８０—８８９０ｔ/［（ｋｍ）￣２·ａ］；坡地底部剖面６和剖面１４的土壤堆积速率分别为２８０和４２３０（ｔ/［（ｋｍ）￣２·ａ］；该坡地剖面线１和剖面线２方向上的泥沙输移比０。
延伸阅读
明渠非恒定流流速、水位等随时间变化的明渠水流。它是由于某处流量、水位等随时间变化而引起的，例如河流中的洪水过程以及由于泄水建筑物闸门调节引起的渠道水流变动等(见图)。图中原恒定流时的水面为实线。设想把闸门向上迅速提起，紧靠闸门的上游水体立即由闸孔泄出，流量增加，水位下降。相反，闸门下游水位升高。虚线表示了闸门上提后各瞬时的水面。由图可见，明渠非恒定流通常表现为波，即水面壅高或降低从一处传向别处的现象。其中起决定作用的力是重力，所以称为重力波。这种波不但有波形的推进，而且伴随着水质量的输运，这是它与湖泊海洋中的波浪的根本区别。一维非恒定流的水力要素如流速v、流量Q、水位z(水深h)、过水面积A等均为时间t和距离s的函数:Q＝Q(s,t)、A＝A(s,t)、v＝v(s,t)、z＝z(s,t)或h＝h(s,t)。根据质量守恒和动量原理可以导出这些函数所满足的微分方程，即1871年法国人A.J.C.B.de圣维南提出的圣维南方程组，它包括水流连续性方程及运动方程：连续性方程运动方程对于矩形断面明渠，上式可化为：式中；C为谢才系数;R为水力半径；i为底坡；g为重力加速度。K、C、R均为z或h的函数。（见谢才公式）圣维南方程组属于一阶双曲型拟线性偏微分方程组。结合初始条件和边界条件联解该方程组便可求得未知函数Q、A或v与h,但目前尚无普遍积分解。实践中常采用近似的计算方法,如特征线法、直接差分法、瞬态法、有限单元法等。应用电子数字计算机求数值解近年来发展迅速。这使明渠非恒定流理论广泛地用于防洪、灌溉、航运、发电、海涂围垦及环境保护等各项工程。其研究对象包括天然河流、人工渠道、河网、水库、湖泊、潮汐河口、港湾及城市下水道系统等 。参考书目K.麦赫默德、V.叶夫耶维奇编，林秉南等译：《明渠不恒定流》，第 1卷，水利电力出版社，北京，1987。(K.Mahmood andV.Yevjevich, Unsteady Flow in Open Channels,Vol.1,Water Resources Publications,FortCollins,Colorado,1975.)
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