迷宫堰在水库溢洪道工程中的应用研究

发布时间：2018-04-23 23:09

本文选题：迷宫堰 + 水力特性　；参考：《大连理工大学》2014年硕士论文

【摘要】：迷宫堰是一种无闸控制的泄水建筑物,为获得较长的溢流前沿长度而在平面上将溢流堰做成折线形,具有泄流量大、结构简单、操作方便等特点,主要应用于中小型水库溢洪道,对新建溢洪道的控制建筑物或改造已建水库的溢洪道以增加泄流能力,均有突出的优越性。本文结合鞍子河水库工程中迷宫堰的设计实例,对迷宫堰泄流能力、水流流态、水力设计等进行了探讨研究。通过设计计算和物理模型试验证实了迷宫堰的泄流能力远大于相同水头下宽顶堰和实用堰的泄流能力,在低水头下这种优势表现得更为突出。第一章为绪论部分。结合当前国家对水利发展出台的宏观性指导政策和区域水利规划提出了课题研究的背景及意义,并介绍了有关迷宫堰的概述及其国内外研究发展现状。第二章为迷宫堰的基本水力特性研究部分。根据国内外学者对迷宫堰水流流态的研究情况,综合给出了迷宫堰流态的水力特征指标、影响迷宫堰流态的因素,可供相关工程借鉴参考。第三章为迷宫堰在鞍子河水库溢洪道工程中的应用研究部分。在综合考虑工程自身功能、管理、环境影响和经济评价的基础上,通过全方位的比较、论证和研究,选取了迷宫堰堰型,优化了设计方案,详细介绍了迷宫堰在溢洪道工程中的布置情况,推算了迷宫堰的泄流能力,并对溢洪道的稳定性、其上下游的衔接进行了详细的优化设计,最终得出迷宫堰从稳定、环境、经济方面的考虑是合适的。第四章为模型试验部分。介绍了模型试验所用的试验装置、试验参数的选取和所使用的试验方法,进行了不同工程布置方案下,下泄流量、水流流态及消能情况等的试验,通过和设计对比,分析了设计结果和试验结果的有效性,确定了最优工程方案。第五章为本文的结论与展望部分。
[Abstract]:The labyrinth Weir is a kind of drain structure without gate control. In order to obtain a longer overflow front length, the overflow Weir is made into a linear shape on the plane, which has the characteristics of large discharge discharge, simple structure, convenient operation, etc. It is mainly used in spillway of medium and small reservoirs, which has outstanding superiority to control buildings of new spillway or to rebuild spillway of built reservoir to increase discharge capacity. Based on the design examples of labyrinth Weir in Anzihe Reservoir Project, the discharge capacity, water flow state and hydraulic design of labyrinth Weir are studied in this paper. Through design calculation and physical model test, it is proved that the discharge capacity of labyrinth Weir is much larger than that of wide top Weir and practical Weir under the same head, and this advantage is more prominent at low head. The first chapter is the introduction. Combined with the macro guiding policy and regional water conservancy planning, this paper puts forward the background and significance of the research, and introduces the summary of labyrinth Weir and the present situation of research and development at home and abroad. The second chapter is the basic hydraulic characteristics of labyrinth Weir. According to the research of labyrinth dammed water flow at home and abroad, the hydraulic characteristic index of labyrinth Weir is given synthetically, and the factors that influence the labyrinth Weir flow state are given, which can be used for reference by relevant projects. The third chapter is the application of labyrinth Weir in the spillway project of Anzihe Reservoir. On the basis of comprehensive consideration of engineering function, management, environmental impact and economic evaluation, the labyrinth Weir type is selected and the design scheme is optimized through omnidirectional comparison, argumentation and research. The layout of labyrinth Weir in spillway engineering is introduced in detail, the discharge capacity of labyrinth Weir is calculated, and the stability of spillway is optimized, and the link between upstream and downstream is designed in detail. Finally, the stability and environment of labyrinth Weir are obtained. Economic considerations are appropriate. The fourth chapter is the part of model test. This paper introduces the test equipment used in the model test, the selection of test parameters and the test methods used, and carries out the tests of discharge, water flow and energy dissipation under different engineering layout schemes, and compares with the design. The validity of design results and test results is analyzed, and the optimal engineering scheme is determined. The fifth chapter is the conclusion and prospect of this paper.
【学位授予单位】：大连理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TV651.1

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