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meandering channel
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  “meandering channel”译为未确定词的双语例句
     The results of research in this paper show that the dune sandstones in the desert facies, braided channel sandstones, deltaic distributary channel sandstones, meandering channel point bar sandstones and (littoral) sandstones are good water-filled rock bodies.
     本文即是基于此种思路对鄂尔多斯盆地白垩系岩相古地理与地下水相关性的研究。 研究表明,沙漠相沙丘砂岩、辫状河道砂体、三角洲分流河道砂体、曲流河边滩砂体、滨岸带砂体是较好的储水体;
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     Finally, the model is applied in numerical calculation of a S type meandering channel.
     并对S型弯道水流运动进行数值计算 .
短句来源
     Calculation of Flow on the Floodplain of Meandering Channel
     游荡型河流滩地洪水计算
短句来源
     OUTCROP STUDY ON CONFIGURATIONS AND RESERVOIR HETEROGENEITY IN MEANDERING CHANNEL SANDBODY-An Example from Outcrop Sandbody of Yanan Formation in Northeastern Erdos Basin.
     曲流河道砂体内部构成及储集层非均质性的露头研究——以鄂尔多斯盆地东北部延安组露头砂体为例
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     The calculation methods for overbank flow in straight channel and meandering channel with compound cross section are studied respectively.
     对复式顺直河道和复式游荡型河道中漫滩洪水的计算方法进行了研究 .
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  相似匹配句对
     Channel
     水道,海峡,航道
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     Calculation of Flow on the Floodplain of Meandering Channel
     游荡型河流滩地洪水计算
短句来源
     Seismic identification of meandering channel sedimentary subfacies.
     曲流河沉积亚相的地震识别方法
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     International Channel
     国际频道
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     (6)meandering reach;
     ⑥宽滩蜿蜒河段;
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  meandering channel
Sediment transport in a meandering channel is measured in a laboratory flume.
      
The environmental variables of the same geomorphic surfaces showed similar trends regardless of braided and meandering channel morphology, but differed significantly among the five geomorphic surfaces, which influenced the dominance of tree species.
      
The restoration project involving the first reconstruction of a meandering channel in Asia has been conducted in a lowland river section of the Shibetsu River, northern Japan.
      
EM1000 multibeam bathymetry shows two main features characterising the canyon - a deeply entrenched meandering channel, bordered by fluvial-like terraces constituting large sediment traps.
      
They formed at the inside of meandering channel curves next to and alongside elongated conglomerate bodies which correspond to point bars.
      
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Since the construction of Dan-Jiang-Kou Reservior in 1959, the reservoir regulation has markedly altered the discharge and sediment process in the channel downstream. The flood-peak hydrograph has been lowered and flattened; the period of low flow has disappeared with the discharge becoming constant at 1000-1500m3/s. Sediment load has been reduced from 1.33kg/m3 and the turbid water has become cleaner. Essential changes have taken place in the channel below the reservoir with the effect, of the reservoir...

Since the construction of Dan-Jiang-Kou Reservior in 1959, the reservoir regulation has markedly altered the discharge and sediment process in the channel downstream. The flood-peak hydrograph has been lowered and flattened; the period of low flow has disappeared with the discharge becoming constant at 1000-1500m3/s. Sediment load has been reduced from 1.33kg/m3 and the turbid water has become cleaner. Essential changes have taken place in the channel below the reservoir with the effect, of the reservoir regulation and regional physical conditions. Degradtion has been replaced by aggradation in the channel; the deep scour in channel thalweg by 2-4m has occurred over the whole channel; deep scour has been slowed down with the establishment of the resistant layer, and lateral erosion increased, but far it will go on depends on the boundary conditions. Degradation is dominant in the channel downstream from the reservoir and has extended up to the mouth 630km below the dam. The channel slope has been gradually flattened except for the places near the confluences of major tributaries where the channel slope becomes steeper due to the aggradation caused by these tributaries of heavy sediment load. The relationships between channel geometry and discharge and sediment load have been improved with a relative factor up to more than 0.8 compared with what they iwere. Since the increase of channel depth is more rapid than that of the width while there is no increase in velocity as the depth increases, the channel geometry has been subject to much alteration; the flow has concentrated into the channel; deep scour of the channel has occurred and sinuosity of the channel thalweg has increased. Consequently, the height difference between the bed and surface of bars has increased;branch channels have been filled up and the channel pattern has changed-from multichannel to the single channel, with the width depth ratio being reduced to about 10. Small bars have joined to become big bars and lower bars have been transformed to higher ones which have after then become terraces. Bank slumping has slowed down as a result of stabilization of bank slope and coarsening of bank material.According to the distance away from the dam and regional natural conditions, the channel downstream from the reservior can be divided into three parts of different characteristics, 1, near reservoir reach (Dan-Jiang-Kou-Nou-Shou) which is more than 90Km long and most markedly affected by reservoir regulation and channel adjustment is rapid so that the straight wandering channel has been transformed to the single restricted meander with sinuosity being increased from 1.25 to 1.50; 2, the reach influenced by Tang-Bei-He river; Its length is 70km. In this reach the channl remains wandering as a large amount of coarser material coming from major tributaries has disturbed the channel self-adjustment. 3,the lower reach which has a length of 460km and less affected by the reservoir regulation owing to the long distance from the dam. In this reach lateral migration has become wea kened in the wandering channels whereas the deep erosion has developed and sinuosity has increased in the meandering channels with the effect of bank material.

丹江口水库建库20多年来,下游河道由堆积性河道变成了冲刷性的河道,河床物质沿程粗化,比降得以调平。水深增加幅度大于河宽,流速并不随着水深增加而加快。深槽、浅滩分布明显化,宽深比不断在减少。整个库下游变化可分为三段:1)近库段,游荡河道向单一限制性曲流转化;2)大支流影响段,河道仍保持着游荡特性;3)下游段,游荡段游荡特性减弱,弯曲段则深蚀作用加强。

Historical geomorphology is normally a study of the changes of landformsin the historical period.It has developed rapidly with its growing needs in the. production and construction of our country .Geologists, pedologists, by draulicengineers, archeologists and conservationists often consult historical geomor-phologic knowledge.In theory, we know that the river meandering channel would migrate on the flood plain,but when did it cut off the meander neck? The gully would be elongated continually,but...

Historical geomorphology is normally a study of the changes of landformsin the historical period.It has developed rapidly with its growing needs in the. production and construction of our country .Geologists, pedologists, by draulicengineers, archeologists and conservationists often consult historical geomor-phologic knowledge.In theory, we know that the river meandering channel would migrate on the flood plain,but when did it cut off the meander neck? The gully would be elongated continually,but how many meters has it been elongatedyThe piedmont would be buried by debris and sand coming down from the mountain slopes, but how many meters per 100 years? Historical geomorphology answers such kind of questions.Therefore, after researches on historical geomorphology, one would get some good ideas,which are helpful to the production and construction in our country. For example, the yellow River was not in one channel during the historical time.The present single channel form is the result of building dykes by human beings,so it must be noted,that its floods have destroyed the dykes and chan-nged its course.And thus,in this article, the author suggests that the Yellow River might be branched into a fan-like channel system instead of one channel at the present day.For the fan-like channel system can make all the soil and water stay in the great, thirsty North China plain.

本文提出历史地貌学是地貌学的一个组成部分,它主要研究人类历史时期地貌的变迁。它在理论上能对地貌学上一些基本理论给予证实或提供重要依据;在生产上能按历史演变过程提出一些建设性意见,为有关建设部门参考。并举珠江三角洲水道及黄河下游的整治意见为例。说明历史地貌学能对生产建设提供科学依据。

Based on the analysis of field data, the relation between the changes of the main current belt in bends and the hydraulic conditions is expounded, and an empirical formula for the radius of curvature of the main current belt in bends of the Jingjiang stretch is established. Since the characteristics of flow and sediment of the Upper and Lower Jingjiang stretches are different from each other, point bars cannot grow up in the upper stretch and it develops into braided channels in bends. While point bars can grow...

Based on the analysis of field data, the relation between the changes of the main current belt in bends and the hydraulic conditions is expounded, and an empirical formula for the radius of curvature of the main current belt in bends of the Jingjiang stretch is established. Since the characteristics of flow and sediment of the Upper and Lower Jingjiang stretches are different from each other, point bars cannot grow up in the upper stretch and it develops into braided channels in bends. While point bars can grow up stably in the lower stretch, so that caving takes place on the concave bank and sediment deposits on the convex bank,thus meandering channel is developed.

本文通过实测资料分析,阐述了主流线在河湾中演变与水流动力因素的关系,建立了荆江河湾内主流线变化的经验关系式.进而论证了由于上下荆江各自具有不同的水力输沙特点,致使前者边滩无法成长,而被切割形成河湾汊道;后者边滩能稳定成长,河湾凹岸不断崩坍,凸岸不断淤积,而发展成为蜿蜒性河道.

 
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