【作者】 傅艳军；

【导师】 高学平；

【作者基本信息】 天津大学 ， 水利水电工程， 2008， 硕士

【摘要】 泄洪消能一直是水利工作者在工程和科学研究中遇到的重要问题。亚碧罗水电站是怒江中下游河段规划中的第七个梯级电站,拦河坝最大坝高约为165.00m,为大(I)型一等工程。为验证工程枢纽布置的合理性及泄洪消能方案的可行性,通过建立工程整体模型,针对试验过程中出现的问题提出改进意见及措施,满足工程运行要求,提出优化方案。本文的主要工作包括以下内容:本文首先对泄洪消能的应用和发展进行了回顾,阐述了窄缝消能工的研究现状及研究方法。以亚碧罗水电站消能防冲问题为研究对象,按重力相似准则建立几何比尺为1:100的正态水工整体模型,进行整体模型试验研究。(1)研究了各泄洪建筑物的泄流能力。试验结果表明,各泄洪建筑物的泄流能力满足设计要求。(2)研究了表孔和泄洪排沙底孔泄洪时局部流态。试验结果表明,表孔和泄洪排沙底孔泄洪时未发现异常的水流现象。(3)研究了泄洪建筑物出口挑流消能工水舌的出流方向、挑射距离、入水角度、入水宽度等。通过试验提出了合理的消能工形式。(4)研究了下游河道的冲淤、流速分布、水面波动等。给出了各种工况下游河道的最大冲坑深度和范围以及冲淤分布、河道流速分布和水面波动。(5)根据试验研究结果及分析,对泄洪建筑物表孔和底孔体型的进一步优化提出了建议。更多还原

【Abstract】 Energy dissipation is an important problem that water people study on and engineering application encounters. As the seventh stair station in the development project on Nujiang river,the Yabiluo hydropower station is a large scale (Ⅰ) and first class project whose the biggest height of the barrage is 165.00m. In order to prove the rationality in engineering pivot arrangement and the feasibility of project on energy dissipation , a integral model of this power station is built, based on the problems aroused in testing procedure, some suggestion and countermeasures are proposed for optimum design considering the safety in operation of the Yabiluo hydropower station.The main task of this thesis is described as follow:The article looks back the application and the development of the energy dissipation, and elaborates the present research situation and research methods of the narrow slit energy dissipation. In order to study the energy dissipation and erosion control problem of the Yabiluo hydropower, building the normality unitary hydraulic model according to the gravitation similarity criterion with the scale of 1:100 to carry out the unitary hydraulic model research.The draw-off capacity of the release works has been studied. The results of the experiment indicate that the draw-off capability of the release works can satisfy the design requirements.The partial flow conditions of the upper and bottom outlet when they are drawing-off are also been studied. The results indicate that abnormal flow conditions are not existed in it.Something for example the flow direction, trajectory bucket distance of the energy dissipator nappe of the release works export are all studied and rational energy dissipator style has been suggested by the experiment.The scouring and silting, velocity distribution and Water Surface Wave of the Downstream Channel are all studied and the biggest characteristic values of them are given.According to the results and analysis of the experiment, the styles of the upper and bottom outlet have been optimized.更多还原