卡基瓦水电站泄洪洞消力池体型优化试验研究(李鹏; 戴光清; 杨庆)

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JeS3I_2Yv0卡基瓦水电站泄洪洞消力池体型优化试验研究

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"a l k}n~u"B#{;b+]0【作者】李鹏; 戴光清; 杨庆 【作者单位】四川大学水力学与山区河流开发保护国家重点实验室

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【论文摘要】 本研究针对卡基瓦水电站泄洪洞消力池的实际情况,主要是水头较高,最高库水位到消力池底板的落差达171.95m;消力池的入池单宽流量较大,初始体型下设计工况时可达 166m3/(s·m);消力池入池流速较大,最大流速达40m/s 左右,而消力池的长度受枢纽布置和工程量的影响为110m,通过与国内外同等工程进行比较,该消力池仍有发生破坏的可能性,根本原因是消力池水跃的流态不稳定,使得池内水体形成低频大尺度的振荡,更加剧了水跃得不稳定性,同时消力池也不能充分消能.为此试验同时考虑枢纽的地形,实际布置等因素, 通过物理模型试验,对消力池进口前明渠曲线段体型进行了的优化,最终的体型可以满足水力学和工程结构的双重要求.水利论文{7J4M)b Q(E5r

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【英文论文摘要】 This paper is aim at the actual situation of stilling basin,belonging to KajiWa Hydropower Station's spillway tunnel,that is high head water,which the gap from the highest level to the bottom plate of stilling basin is 171.95 m.The discharge of per extent that is at the entrance of stilling basin is big,which can be up to 166 m3/(s·m)at the design status of the initiatory body.The velocity which is at the entrance of stilling basin is big and the maximum velocity is up to 40 m/s around,while the length of stilling basin is 110m affected by the project disposal and gross. Through the comparison with the same works at home and abroad the stilling basin,there is still the possibility of sabotage about the stilling basin.The fundamental reason is that the flow pattern of the stilling basin jump is instability,which makes the water in pool forming large-scale and low-frequency oscillations,and this aggravated the jump's instability ,as a result the stilling basin can not be fully energy di...更多ssipation.For these reasons,taking into account the terrain and the actual layout of project and other factors,using physical model testing,we optimized the open channel curve section's body,which is before the stilling basin's entrance,and the final shape can meet the double requirements of hydraulics and engineering structure.  还原水利论文\F@ m,I B.H

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【论文关键词】 消力池; 涡奇曲线; 水跃消能; 优化
4{!hgq \q2y%y0【英文论文关键词】 stilling basin; ogee curve; jump energy dissipation; optimization

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TAG: 李鹏 泄洪洞 杨庆 消力池 卡基
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