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围垦工程中水流及河床冲淤变化研究

发表时间:2009-05-31  浏览量:1402  下载量:678
全部作者: 李丹
作者单位: 河海大学交通学院、海洋学院
摘 要: 为了论证围垦工程堵口设计的合理性,以走马埭围垦堵口工程为依托,进行整体物理模型试验,研究测定龙口合龙施工期在不同龙口尺度下内外港水位的变化情况,流速流态的变化,以及龙口附近滩涂在施工水流条件下的最大冲刷坑深度、形态及其范围,得出围垦工程中水流及河床的冲淤变化规律等一系列结论。为施工设计、工程方案优化提供科学依据,并提供合龙程序的优化方案,以利于工程安全稳步地进行,为今后的围垦工程实践奠定一定的理论基础。
关 键 词: 水路运输;水流;泥沙运动;河床冲淤;施工设计
Title: Study on the change of streams and riverbed erosion and deposition in reclamation engineering
Author: LI Dan
Organization: College of Traffic, College of Ocean, Hohai University
Abstract: To demonstrate the rationality of the design of closure in reclamation engineering, taking the Zoumadai closure work as example, by the overall physical model experiment, this paper studied and determined the change of water level inside and outside the port under different closure gap scales during the closure construction period, the change of velocity and flow pattern, and the depth, shape and scope of the maximum scour pit on the beach around closure gap under the construction water flow condition. The change law of streams and riverbed erosion and deposition in reclamation engineering was obtained, The conclusion provides scientific basis for the construction design and the optimization of engineering scheme. It also provides the optimized scheme of closure procedures, which is beneficial to the safe and steady performance of engineering, and lays a theoretical foundation for the reclamation engineering practice in the future.
Key words: water transportation; streams; silt movement; riverbed erosion and deposition; construction design
发表期数: 2009年5月第10期
引用格式: 李丹. 围垦工程中水流及河床冲淤变化研究[J]. 中国科技论文在线精品论文,2009,2(10):1051-1056.
 
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