| 三峡船闸末级闸首超长泄水廊道中阀门水力学关键问题研究(2)——事故动水关闭过程的阀门水动力学特性 |
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| 引用本文： | 张瑞凯. 三峡船闸末级闸首超长泄水廊道中阀门水力学关键问题研究(2)——事故动水关闭过程的阀门水动力学特性[J]. 水利水运工程学报, 2001, 0(2) |
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| 作者姓名： | 张瑞凯 |
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| 作者单位： | 南京水利科学研究院, |
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| 摘 要： | 运用物理模型试验和数学模型计算的结果 ,阐述了三峡船闸末级闸首超长泄水廊道的阀门在事故动水关闭过程中 ,阀门段水流出现的明满流交替流态特征 ,分析了阀门关门速率、起关开度对阀门后廊道冲击特性的影响 ,实测了阀门可能承受的最大作用水头 ,探讨了阀门启闭力、支铰荷载和阀门段的空化特性 .
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| 关 键 词： | 运行方式 空化 明满流 水动力学 阀门 泄水廊道 模型试验 三峡船闸 |
Hydraulic study of valve with extra long emptying culvertof the Three Gorges Lock''s last chamber(2)&Hydrodynamic characteristics of valve with emergent valve closing |
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| ZHANG Ruikai. Hydraulic study of valve with extra long emptying culvertof the Three Gorges Lock''s last chamber(2)&Hydrodynamic characteristics of valve with emergent valve closing[J]. Hydro-Science and Engineering, 2001, 0(2) |
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| Authors: | ZHANG Ruikai |
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| Abstract: | The hydrodynamic characteristics of the emptying valve of the Three Gorges Lock's last chamber during emergent closing operation are described. Based on the results of physical model tests and mathematical model calculations, the characteristics of the flow pattern alternating between non-pressure flow and pressure flow, and the influence of valve closing's rate and initial valve closing opening on the impulsive characteristics of the culvert behind the valve are analyzed. The maximum water head, valve hoisting loads, valve axle loads and cavitation characteristics of the valve stretch are measured and studied. |
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| Keywords: | operating manner cavitation non pressure and pressure flow hydrodynamics valve culvert model test the Three Gorges Lock |
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