消力池最不利条件下池深极值探讨  

Investigation of extremum depth of sluice stilling basin under the most unfavorable conditions

作　　者：黄朝煊[1,2] 王贺瑶 王正中[2] 赵延风[2] 

机构地区：[1]浙江省水利水电勘测设计院,杭州310002 [2]西北农林科技大学水利水电工程研究所,陕西杨凌712100

出　　处：《水力发电学报》2015年第1期79-84,共6页Journal of Hydroelectric Engineering

基　　金：水利部公益性行业科研专项项目(201401010);围垦院软基水闸创新团队科标业项目资助

摘　　要：针对水闸最不利消能状态一般出现在非最大流量时状况,根据水闸规范消能计算公式,通过数学函数极值理论及无量纲理论对水闸最不利消力池深进行分析研究,推出了相对收缩水深、相对跃后水深的解析计算公式,给出了受潮位影响的沿海挡潮排涝闸、平原水闸以及山区河道大落差水闸的消力池建议深度的简捷计算公式,并通过工程实例计算比较,该解析计算式方便简捷、精度可靠。This paper derives formulas for calculation of the relative contraction of water depth ann me relative hydraulic jump depths in the most unfavorable condition, based on the energy dissipation formulas given in the sluice design specification. Because the most unfavorable state of energy dissipation for sluice generally occurs not at the maximum flow, engineers often blind spreadsheet deriving for stilling basin depth design. We apply the extreme value theory and dimension theory to analyze the most unfavorable stilling basin depths, and suggest concise formulas for three stilling basins of coastal tidal drainage gate, sluice on a plain river, and sluice with a great water drop on a mountain river. Example calculations show that these formulas are accurate, reliable, and convenient.

关 键 词：工程水力学 水闸 消力池池深 远离式水跃 跃后水深 

分 类 号：TV131.4[水利工程—水力学及河流动力学]