本文選題：迷宮堰 + 水力特性　； 參考：《大連理工大學(xué)》2014年碩士論文

【摘要】：迷宮堰是一種無閘控制的泄水建筑物,為獲得較長的溢流前沿長度而在平面上將溢流堰做成折線形,具有泄流量大、結(jié)構(gòu)簡單、操作方便等特點(diǎn),主要應(yīng)用于中小型水庫溢洪道,對新建溢洪道的控制建筑物或改造已建水庫的溢洪道以增加泄流能力,均有突出的優(yōu)越性。 本文結(jié)合鞍子河水庫工程中迷宮堰的設(shè)計(jì)實(shí)例,對迷宮堰泄流能力、水流流態(tài)、水力設(shè)計(jì)等進(jìn)行了探討研究。通過設(shè)計(jì)計(jì)算和物理模型試驗(yàn)證實(shí)了迷宮堰的泄流能力遠(yuǎn)大于相同水頭下寬頂堰和實(shí)用堰的泄流能力,在低水頭下這種優(yōu)勢表現(xiàn)得更為突出。 第一章為緒論部分。結(jié)合當(dāng)前國家對水利發(fā)展出臺的宏觀性指導(dǎo)政策和區(qū)域水利規(guī)劃提出了課題研究的背景及意義,并介紹了有關(guān)迷宮堰的概述及其國內(nèi)外研究發(fā)展現(xiàn)狀。 第二章為迷宮堰的基本水力特性研究部分。根據(jù)國內(nèi)外學(xué)者對迷宮堰水流流態(tài)的研究情況,綜合給出了迷宮堰流態(tài)的水力特征指標(biāo)、影響迷宮堰流態(tài)的因素,可供相關(guān)工程借鑒參考。 第三章為迷宮堰在鞍子河水庫溢洪道工程中的應(yīng)用研究部分。在綜合考慮工程自身功能、管理、環(huán)境影響和經(jīng)濟(jì)評價(jià)的基礎(chǔ)上,通過全方位的比較、論證和研究,選取了迷宮堰堰型,優(yōu)化了設(shè)計(jì)方案,詳細(xì)介紹了迷宮堰在溢洪道工程中的布置情況,推算了迷宮堰的泄流能力,并對溢洪道的穩(wěn)定性、其上下游的銜接進(jìn)行了詳細(xì)的優(yōu)化設(shè)計(jì),最終得出迷宮堰從穩(wěn)定、環(huán)境、經(jīng)濟(jì)方面的考慮是合適的。 第四章為模型試驗(yàn)部分。介紹了模型試驗(yàn)所用的試驗(yàn)裝置、試驗(yàn)參數(shù)的選取和所使用的試驗(yàn)方法,進(jìn)行了不同工程布置方案下,下泄流量、水流流態(tài)及消能情況等的試驗(yàn),通過和設(shè)計(jì)對比,分析了設(shè)計(jì)結(jié)果和試驗(yàn)結(jié)果的有效性,確定了最優(yōu)工程方案。 第五章為本文的結(jié)論與展望部分。
[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.
【學(xué)位授予單位】：大連理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TV651.1

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本文編號：1794050