| 跌坎型底流消能工的跌坎最小深度研究 |
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| 作者姓名： | 崔 召 张建蓉 张 强 |
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| 作者单位： | ( 1. 昆明理工大学 a. 电力工程学院; b. 冶金与能源工程学院, 昆明 650093;
2. 昆明市水利水电勘测设计研究院, 昆明 650231) |
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| 基金项目： | 国家自然科学基金/ 跌坎型底流消能工水流流动结构水力特性研究0( 51169008) |
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| 摘 要： | 跌坎型底流消能工消力池内的水力特性受到跌坎深度的影响。应用平面紊动射流理论,以消力池内允许的最大时均动水压强为控制目标,对于跌坎最小深度的确定方法进行了初步分析,建立了计算跌坎最小深度值的理论公式。通过水力学试验方法,得到消力池底板时均动水压强与跌坎最小深度之间的关系,同时与跌坎最小深度试验值进行了比对,对本文建立的理论公式进行了验证。
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| 关 键 词： | 底流消能工 跌坎深度 紊动射流理论 时均动水压强 临底流速 |
Minimum falling 2sill depth of the falling 2sill bottom2flow dissipation |
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| Authors: | CUI Zhao ZHANG Jianrong ZHANG Qiang |
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| Affiliation: | ( 1a . Faculty of Electric Power Engineering, K unming University of Science and Technology , Kunming 650093, China;
1b. Faculty of Metallurgy and Energy Engineering, Kunming University of Science and Technology, Kunming 650093,
China; 2. K unming Water Conservancy and H ydropower Survey and Design Institute, K unming 650231, China) |
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| Abstract: | The hydraulic characteristics of the falling2sill bottom2flow energy dissipation pool are affected by the falling 2sill
depth. In order to control the allowable maximum time 2averaged dynamic water pressure in the dissipation pool, a method and its
theoretic formula for determining the minimum falling2sill depth are preliminarily analyzed and derived using the plane turbulent
jet theory. Based on the hydraulic model experiments, the relationship between the time 2averaged dynamic water pressure on the
bottom plate and the minimum falling 2sill depth is obtained. T he calculated falling2sill depth is compared with the measured val2
ue to verify the applicability of theoretic formula. |
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| Keywords: | bottom2flow dissipation falling2sill depth turbulent jet theory time 2averaged dynamic water pressure underflow
speed |
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