不求导加速迭代法在消力池深度计算中的应用  

Application of accelerated iterative method without derivation in depth calculation of stilling basin

作　　者：查龙青 戎贵文[1,3] ZHA Longqing;RONG Guiwen(College of Earth and Environment,Anhui University of Science and Technology,Huainan 232001,China;Anhui Province Highway and Port Engineering Co.,Ltd.,Hefei 230031,China;College of Water Conservancy and Hydropower Engineering,Hohai University,Nanjing 210098,china)

机构地区：[1]安徽理工大学地球与环境学院,安徽淮南232001 [2]安徽省路港工程有限责任公司,安徽合肥230031 [3]河海大学水利水电学院,江苏南京210098

出　　处：《江淮水利科技》2023年第1期31-34,共4页Jianghuai Water Resources Science and Technology

基　　金：国家自然科学基金面上项目(52279055、51579002);安徽省自然科学基金项目(1608085MD80)。

摘　　要：消力池深度计算是底流消能工消能防冲计算的重要内容之一,出池河床无水状态在泄水建筑物运行之前实际存在。为了解决消力池深度计算的困难,构造池深差方程,介绍了不求导加速迭代法(弦截法)计算收缩断面水深的步骤,进而求得消力池深度。结果表明:消力池深度计算值最大对应的下游水深为ht=φ^(’-2/3)h_(k)。研究成果对消力池设计具有重要意义。The depth caculation of the stilling basin is one of the important parts in energy dissipation caculation of underflow energy dissipator.The waterless state of the outlet riverbed actually exists before the operation of water release structure.In order to solve the difficulty of stilling basin depth caculation,the differential equation of stilling basin depth is constructed and the steps of calculating contractional depth by chord method is introduced.Then the depth of stilling basin can be solved.The result shows that the maximum downstream water depth corresponding to the calculated depth of stilling basin is ht=φ^(’-2/3)h_(k).It is of great significance to the design of stilling basin.

关 键 词：消力池深度 弦截法 收缩断面水深 下游水深 

分 类 号：TV135.21[水利工程—水力学及河流动力学]