节点文献

公伯峡水电站导流洞改建为旋流式内消能泄洪洞的体型优化与方案比较研究

Structure Optimizing and Project Augmentation for Internal Dissipation Discharge Tunnel with Swirling Flow Reconstructed from Diversion Tunnel of Gongboxia Power Station

【作者】 洪镝

【导师】 牛争鸣; 谢小平;

【作者基本信息】 西安理工大学 , 水利水电工程, 2003, 硕士

【摘要】 在高山峡谷的大江大河上修建水电站,往往需要大尺度导流洞。而导流洞在完成导流任务后,又往往因为工期紧,衬砌标准需提高,上下游水位衔接等困难而被废置不用。而常规的挑流消能方案,又常出现象雾化、空蚀破坏、岸坡冲刷等较难以克服的问题。为了解决上面两个方面的问题,近十几年以来,国内外对旋流式内消能工进行了较多的试验研究与设计方案论证。 本文采取理论分析与试验比较相结合的方法,首先对黄河公伯峡水电站右岸导流洞改建为永久式内消能泄洪洞的四个较大设计方案进行了水力特性的试验研究与体型优化,在此基础上,向建设单位分别提供了竖井旋流内消能的推荐方案与水平旋流内消能的推荐方案。其次根据水利水电规划设计总院的专家评审推荐意见和建设单位与设计部门对水平旋流方案进一步论证与优化意见,对水平旋流消能的淹没流方案与自由流方案进行了水力特性的试验研究与体型优化,提出了二种流态下的推荐方案。最后根据整个体型优化过程与结果,从技术与经济对比分析两个方面,对公伯峡右岸旋流泄洪洞进行了选型研究与方案比较,提出了公伯峡水电站右岸旋流内消能泄洪洞的最终推荐方案。 公伯峡水电站右岸旋流内消能泄洪洞是国内第一个泄量达1000m/s、水头超过100m,即将修建的旋流式内消能泄洪洞,其方案的论证与试验研究以及建成后投入使用,将在国内外旋流式内消能泄洪洞设计、研究与工程应用中具有重要的意义,将有力的推动这一新的消能形式在工程中的应用,从而为解决高坝建设中泄水建筑物的高速水流问题与导流洞改建的技术与经济问题提供工程实例,对推动与发展水工水力学的研究与发展均具有重要的理论与实践意义。

【Abstract】 Large scale diversion tunnel is often adopted when building a hydraulic power station between high mountains or in canyons on a great river. However the diversion tunnel is generally discarded after used, because the construction period of hydraulic power station is pressing , the lining standard of tunnel needs being improved and the up and down steam water level is difficult to be joined. But the general used ski-jump energy dissipation scheme often causes a series of insurmountable difficulties, such as fogging, cavitations demolition, and bank scouring . In order to solve above mentioned two kind problems ,in recent years , many test researches and designing schemes have been done aimed at internal dissipater with swirling flow .Firstly in the paper the research of hydraulic characters and the optimize of structure have being carried out on the four bigger design schemes of permanent internal dissipation discharge tunnel reconstructed from the right bank’s diversion tunnel of Gongboxia Power Station with a method of theoretical analysis combined with test comparisons. On this basis , two form swirling flow internal dissipation schemes, vertical and horizontal axis are recommended to the construction unit of the station as the schemes to be selected next. Secondly, according to the experts’ opinions of General Institute of Hydraulic and Water Power Design and the ideas presented by the construction unit and the design branches , author of the paper accomplished the research of hydraulic characters and the optimize of structure on the submerged flow scheme and free flow scheme of horizontal swirling flow dissipation, and brought forward the recommend scheme of these two flow patterns respectively . Finally , author analyzed and compared these two schemes on the aspects of technology and economy according to the wholly structure optimizing process and outcome, and recommended the final scheme of the right bank’s diversion tunnel of Gongboxia Power Station reconstructed into a horizontal swirling flow internal dissipater tunnel.The horizontal swirling flow internal dissipater tunnel being built in Gongboxia Power Station will be the first one reconstructed from a diversion tunnel whose dischargereaches to 1000m Vs and water head is more than 100m in china . Its scheme’s argumentation ,test research and future apply will have important meanings to the design .research and engineering application of internal dissipation discharge tunnel with swirling flow, will powerfully promote engineering application of this new kind of dissipation mode , which may solve some high velocity problems in high dam construction and provide a engineering example for technological and economical augmentation in a diversion tunnel reconstruction. It is of theoretical and practical importance to promote hydraulic structure researches and development.

  • 【分类号】TV732
  • 【被引频次】1
  • 【下载频次】178
节点文献中: 

本文链接的文献网络图示:

本文的引文网络