日常调节对深层水库通航条件的影响

IF 1.1 4区工程技术 Q4 MECHANICS

Journal of Applied Fluid Mechanics Pub Date : 2023-12-01 DOI:10.47176/jafm.16.12.1949

P. Y. Zhou, Q. Ma, H. C. Xue, P. Y. Peng, C. H. Xie, L. Y. Xie, X. J. Zhang

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引用次数: 0

摘要

上游电站的日常调节和下游电站的反调节频繁地改变了河流的流态、流速和水面梯度，从而导致河流的流动特性不稳定，阻碍了航运、航道维修和码头作业。本文以三峡大坝与葛洲坝大坝之间的河流为研究对象，探讨了日调节对深库区通航条件的影响。利用原型观测和深度平均二维模型确定了影响非定常流场传播规律的主要因素。系统地分析了非定常流场的传播方式和电站的航道通航条件及措施。结果表明，水位幅值主要受峰幅值和削峰时间的影响。此外，基流对水位幅值的时空分布有显著影响。受水库库容影响，对调峰时间设定了阈值;这可能导致最大的水位变化。随着削峰时间的增加，水位幅值减小。研究结果可为枢纽航运优化提供理论支持。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Effect of Daily Regulation on Navigation Conditions in Deep Reservoirs

The daily regulation and anti-regulation of upstream and downstream power stations, respectively, frequently alter the river flow regime, velocity, and surface gradient, thus resulting in unsteady flow characteristics of the river and hindering shipping, waterway maintenance, and wharf operations. This study investigated the influence of daily regulation on the navigation conditions in the deep reservoir by taking the rivers between the Three Gorges Dam and the Gezhouba Dam as the research object. Prototype observations and a depth-averaged 2-D model were used to determine the main factors affecting the propagation law of unsteady flow. The propagation pattern of unsteady flow and channel navigational conditions and measures of the power station were analyzed systematically. The results showed that the water level amplitude was affected primarily by the peak amplitude and duration of the peak shaving. Additionally, the base flow significantly influenced time spatial distributions of the water level amplitude. Impacted by the reservoir storage capacity, a threshold for the duration of peak shaving was noted; this may result in maximum water level variation. As the peak shaving duration increased, the amplitude of the water level decreased. The research results can provide theoretical support for the optimization of hub shipping.

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来源期刊

Journal of Applied Fluid Mechanics THERMODYNAMICS-MECHANICS

CiteScore

2.00

自引率

20.00%

发文量

138

审稿时长

>12 weeks

期刊介绍： The Journal of Applied Fluid Mechanics (JAFM) is an international, peer-reviewed journal which covers a wide range of theoretical, numerical and experimental aspects in fluid mechanics. The emphasis is on the applications in different engineering fields rather than on pure mathematical or physical aspects in fluid mechanics. Although many high quality journals pertaining to different aspects of fluid mechanics presently exist, research in the field is rapidly escalating. The motivation for this new fluid mechanics journal is driven by the following points: (1) there is a need to have an e-journal accessible to all fluid mechanics researchers, (2) scientists from third- world countries need a venue that does not incur publication costs, (3) quality papers deserve rapid and fast publication through an efficient peer review process, and (4) an outlet is needed for rapid dissemination of fluid mechanics conferences held in Asian countries. Pertaining to this latter point, there presently exist some excellent conferences devoted to the promotion of fluid mechanics in the region such as the Asian Congress of Fluid Mechanics which began in 1980 and nominally takes place in one of the Asian countries every two years. We hope that the proposed journal provides and additional impetus for promoting applied fluids research and associated activities in this continent. The journal is under the umbrella of the Physics Society of Iran with the collaboration of Isfahan University of Technology (IUT) .