江淮水利科技Issue(3)：40-43,4.DOI:10.20011/j.cnki.JHWR.202403009
平底矩形渐扩挖深式消力池深度计算新公式
New formula for calculating the depth of a rectangular expanding deep excavation energy dissipation basin with a flat bottom
袁聪 1钱传平 1查龙青2
作者信息
- 1. 全椒县水利局,安徽 滁州 239500
- 2. 安徽建工路港建设集团有限公司,安徽 合肥 230031
- 折叠
摘要
Abstract
To address the inconsistency between the traditional formula for calculating the depth of a flat-bottom rectangular ex-panding deep excavation energy dissipation basin and the formula for calculating the depth of an equal-width rectangular section energy dissipation basin,a new formula for calculating the depth of an expanding rectangular section deep excavation energy dis-sipation basin has been derived.This derivation involves establishing equations for the contraction section water depth,hydraulic jump,basin outflow drop,and the geometric relationship at the end of the energy dissipation basin.Analysis suggests that the tra-ditional formula for calculating the depth of the energy dissipation basin often yields results smaller than those obtained using the new formula.Using the depth calculated by the traditional formula as a design basis may not fully ensure the formation of a sub-merged hydraulic jump with a determined submergence coefficient.This could lead to significant downstream riverbed erosion and fail to meet energy dissipation design requirements.When the widths at the beginning and end of the energy dissipation basin are equal,the new formula coincides with the formula for calculating the depth of an equal-width rectangular section energy dis-sipation basin.The new formula,with its clear physical concept,provides a more reliable basis for engineering design.关键词
挖深式消力池/消力池深度/传统公式/新公式Key words
deepend stilling basin/depth of stilling basin/traditional formula/new formula分类
建筑与水利引用本文复制引用
袁聪,钱传平,查龙青..平底矩形渐扩挖深式消力池深度计算新公式[J].江淮水利科技,2024,(3):40-43,4.
