| FLOOD DISCHARGE AND ENERGY DISSIPATION BY JETS FROM OUTLETS IN HIGH ARCH DAM |
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| 作者单位： | Ph.D.Candidate:Sun JianXi'an University of Technolgy，Xi'an 710048，ChinaSupervisor:Yu Changzhao (Tsinghua University，Beijing 100084，China)Li Yuzhu (Tsinghua University，Beijing 100084，China)Chen Changzhi (Tsinghua University，Beijing 100084，China)Members of Dissertation Defense Committee:Gao Jizhang (China Institute of Water Resources and Hydropower Research)，ChairmanLi Guifen (China Institute of Water Resources and Hydropower Research)Cui Guangtao (Tianjing University)Wang Xingkui (Tsinghua University)Yu Changzhao (Tsinghua University)Li Yuzhu (Tsinghua University)Chen Changzhi (Tsinghua University) |
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| 摘 要： | ＢＲＩＥＦＩＮＴＲＯＤＵＣＴＩＯＮＯＦＴＨＥＰＡＰＥＲ : Ｔｈｉｓｔｈｅｓｉｓｍａｉｎｌｙｒｅｓｅａｒｃｈｅｓ (1)ｏｎｔｈｅｄｉｆｆｕｓｉｏｎｏｆａｎａｅｒａｔｅｄｊｅｔｉｎｔｈｅｗａｔｅｒｃｕｓｈｉｏｎ ｐｏｏｌ,(2 )ｏｎｔｈｅｌｏｃａｌｒｉｖｅｒｂｅｄｓｃｏｕｒ ,ａｎｄ (3)ｏｎｔｈｅｓｔａｂｉｌｉｔｙｏｆｔｈｅｉｎｖｅｒｔｅｄａｒｃｈｃｕｓｈｉｏｎ ｐｏｏｌａｎｄｔｈｅｆｌａｔ ｂｏｔｔｏｍｅｄｏｎｅｕｎｄｅｒｔｈｅｃｏｎｄｉｔｉｏｎｏｆｔｈｅｌａｒｇｅｄｉｓｃｈａｒｇｅａｎｄｈｉｇｈｗａｔｅｒ…
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| 关 键 词： | high arch dam flood discharge energy dissipation inverted arch cushion pool stability aeration |
FLOOD DISCHARGE AND ENERGY DISSIPATION BY JETS FROM OUTLETS IN HIGH ARCH DAM |
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| Authors: | Sun Jian |
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| Abstract: | In this thesis, the scale effect by an aerated water jet diffusing in the water upon the hydrodynamic pressure, the local riverbed scour by multiple layered jets and by those colliding in the vertical and the transverse directions, and the stability of the apron slab both in the inverted arch cushion pool and the flat bottom one by the large discharge and the high water head with 300m level are detailedly researched by means of model test and numerical simulation. A mathematic model simulating the destabilization of the flat bottomed slab is established to open out the mechanism of its stability. Both experimental researches both on the hydrodynamic pressure acted inside joints between the bedrock and the apron slab, and on forces at arch abutments in inverted arch cushion pool are carried out by using an advanced measurement and the imitation means to acquire the mechanism of the inverted arch pool to keep stability and its stability condition. |
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| Keywords: | high arch dam flood discharge energy dissipation inverted arch cushion pool stability aeration |
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