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hydropower station
相关语句
  水电站
    Study on the Atomized Flow in Hydropower Station
    水电站泄洪雾化深化研究
短句来源
    Computation of Transient Flow of the Complex Tailrace System for the Hydropower station
    水电站复杂尾水系统非恒定流计算
短句来源
    Modelling of Sediment in Reservoir Area of Manwan Hydropower Station
    漫湾水电站库区泥沙模型试验研究
短句来源
    An Experimental Research of Sediment Model in the Dam Area of Bailongtan Hydropower Station
    百龙滩水电站坝区泥沙模型试验研究
短句来源
    Application of a Genetic Algorithm to Optimal Operation of Hydropower Station
    遗传算法在水电站优化调度中的应用
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  电站
    The Measures and Practice of Solving Sediment Problem for Liujiaxia Hydropower Station
    刘家峡水电站泥沙问题的解决措施与运用实践
短句来源
    Influence of Construction of Shuikou Hydropower Station on Minjiang RiverMouth Area
    水口电站建设对闽江河口区的影响
短句来源
    Study on the Integer Hydraulic Model Tests of Wentoukou Hydropower Station
    温头口电站整体水工模型试验研究
短句来源
    Experimental Study on Reservoir Scour Funnel before Dam at Luogu Hydropower Station
    洛古电站坝前冲刷漏斗模型试验研究
短句来源
    Study on Hydraulic Test in Flood-releasing Structure of Qianfoyan Hydropower Station
    千佛岩水电站泄洪建筑物水力学试验研究
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  “hydropower station”译为未确定词的双语例句
    Prototype observation on aerated flow produced by splitting pier of Zhalin Hydropower Station
    柘林掺气分流墩原型观测试验研究
短句来源
    A Numerical Simulating Study on Deformation in Tail Channel of Feng-Man Hydropower Station
    丰满电厂尾水河床变形数值计算研究
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    Flood Forecasting During the Construction Period of Taipingyi Hydropower Station
    太平驿电厂施工期洪水预报
短句来源
    Automatic System of Hydrologicl Datda Acquisition and Transmission at the Bikou Hydropower Station
    碧口水电厂短波、超短波水情自动测报混合系统的建设和经验
短句来源
    Application Of Automatic Flow Regimen Exploration And Prediction System in Wujiangdu Hydropower Station
    水情自动测报系统在乌江渡区间流域的应用
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  hydropower station
Creative collaboration of participants during construction of the Sayano-Shushenskoe hydropower station
      
New electric plant and progressive electrical designs at the Sayano-Shushenskoe hydropower station
      
New solutions in arrangement and manufacturing technology of the turbogenerator for the Sayano-Shushenskoe hydropower station
      
The fate of radio-tagged hatchery-reared salmon smolts (Salmo salar L.) was investigated in the tailrace of a hydropower station in the Danish River Gudenaa during 2 years.
      
Initial mortality of radio-tagged Atlantic salmon (Salmo salar L.) smolts following release downstream of a hydropower station
      
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The Yili River Hydropower Station, which has four hydropower projects in cascades,is developed between two neighbouring river basins. The Shuicaozi Project, which is the second stage of the cascades, functions as a seasonal storage reservoir and diversion work conveying the discharge from the Yili River to the Xiaojiang River for power production. Since no bottom outlet for sediment flushing was installed, so from the time of impounding of the reservoir in June 1958 up to January 1981, sediment deposited...

The Yili River Hydropower Station, which has four hydropower projects in cascades,is developed between two neighbouring river basins. The Shuicaozi Project, which is the second stage of the cascades, functions as a seasonal storage reservoir and diversion work conveying the discharge from the Yili River to the Xiaojiang River for power production. Since no bottom outlet for sediment flushing was installed, so from the time of impounding of the reservoir in June 1958 up to January 1981, sediment deposited in the Shuicaozi Reservoir totalled 8, 160,000 m3 i.e. 85 percent of its total storage capacity had been lost. For the sake of sedimentation reduction and recovery of storage capacity, the measure of drawdown flushing has been used in the Shuicaozi Reservoir.Based on the analysis of field data and theoretical calculation,the characteristics and rational operation of drawdown flushing in the Shuicaozi Reservoir are investigated.The characteristics of drawdown flushing in the Shuicaozi Reservoir can be summarized as follows: (1) The region affected by flushing, the pool water level for starting retrogressive erosion and the longitudinal profile performed by drawdown flushing are rather fixed. (2) As a coefficient of reservoir emptying a is used for representing the extent of utilization of the flow energy in the drawdown flushing, it is evident that the flow erosion capacity was not fully developed in the past flushing events. (3) In the first stage of drawdown flushing,the sediment sluiced comes mainly from the deepening of the main channel on the reservoir bed, and afterwards, sediment sluiced out from the reservoir comes mainly from the banks of the main channel in the manner of slope sliding and bank collapsing. (4) On the top-set of the delta, deposition in the main channel can be sluiced out in drawdown flushing, but upon the flood plain the deposition is accumulated gradually. On the front-set of the delta and in the deposition reach in front of dam where the river valley is narrow, as the main channel is deepened in flushing, the unconsolidated silt slides towards the main channel slowly, the elevation of the deposited reservoir bed can be lowered down in the whole cross-section.The occurrence of channel bank sliding and unconsolidated mud flow is closely related to the pore water pressure in the deposit. The calculated theoretical results show that the quantity of seepage water from the deposit is very small in a period of several days, and the pore water pressure keeps approximately its original value in the drawdown flushing process.The calculated theoretical results obtained from the application of a parabolic partial differential equation show that if the discharge, duration and water volume used in flushing event are kept constant, the larger the drop of water level in front of the dam, the larger the quantity of eroded sediment will be, and the faster the drawdown rate of pool water level, the greater the quantity and intensity of erosion will be.The operation of drawdown flushing in the Shuicaozi Reservoir is suggested as follows: (1) In drawdown flushing, the pool water level in front of the dam should be fully drawn down. ( 2 ) A saddle shaped discharge hydrograph for drawdown flushing should be used. That is, in the first stage, a large flow discharge is used for drawdown flushing, it aims to deepen the main channel. Then, as soon as the main channel is formed the flushing discharge should be cut down. Finally, the large discharge erosion process is repeated, it aims to sluice out the accumulated sediment from slope sliding and bank collapsing and to enlarge the cross-section of the main channel.The suggestion stated above was adopted by the Yili River Hydropower Plant in the drawdown flushing in February 1984, the practice indicated that the silt concentration in the flushing flow was increased and the water consumption of drawdown flushing was reduced obviously.

本文总结水槽子水库泄空冲刷的有关资料与经验.针对目前存在冲刷耗水量大的问题,提出改进的冲刷控制运用方式.指出除坝前水位过高之外,在整个冲刷期间保持施放大流量是导致水耗大的主要原因之一.在以横向补给为主的冲刷阶段,大幅度削减冲刷流量方可避免水量的浪费. 另外,从淤泥滩内孔隙水排出量的角度,通过简化的理论分析,说明短时间的空库将不会导致淤泥性质发生大的变化.

The aerated flow splitting pier firstly applied in Zhalin Hydropower Station, is a new type facility for dissipation of energy, mitigating cavita-tion damage and erosion.Through experimental research and prototype observation notable results of decreasing erosion has been obtained by vising aeratedflow splitting pier, and the stability of the pier is also safe and reliable.In the paper, the principal result of the prototype observation is presented, and the special local hydraulic phenomenon, flow pulsation,...

The aerated flow splitting pier firstly applied in Zhalin Hydropower Station, is a new type facility for dissipation of energy, mitigating cavita-tion damage and erosion.Through experimental research and prototype observation notable results of decreasing erosion has been obtained by vising aeratedflow splitting pier, and the stability of the pier is also safe and reliable.In the paper, the principal result of the prototype observation is presented, and the special local hydraulic phenomenon, flow pulsation, vibration character of the pier, aerated fogging, dissipation of energy and effect of decreasing erosion are also discussed.

掺气分流墩是首次应用于柘林水电站的一种新型掺气消能减蚀(防冲)设施。通过原型观测试验研究和超过正常水位的运用检验表明:掺气分流墩掺气减蚀效果显著。本文介绍了这次原型观测的主要成果,对其特殊的局部水力现象,水流脉动和墩体振动特性,水流掺气雾化,以及掺气消能减蚀效果等进行了探讨。

This paper overall illustrated the style and suitable condition through the experimental research of the earth-rock overflow cofferdam for the hydropower station of Tian Sheng Qiao. And it proposed the quantitative oriterion of platform elevation. It compared the stability with different shapes of protection of concrete plate and gabions covered with Wires as well as with steel reinforcement. As the result, the latter shows the best of all in stability.

本文通过对天生桥水电站土石过水围堰的试验研究,全面阐述了土石过水围堰的体型及其适用条件,提出了确定平台高程的定量标准。比较了混凝土面板、铅丝笼与钢筋笼等不同防护型式,通过试验与理论分析,求得稳定曲线与经验公式。试验结果表明:钢筋笼的稳定性为最好。

 
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