关于水闸下游无水工况的消能计算探讨  

Discussion on Energy Dissipation Calculation of Water Sluice in the Case of No Water at Downstream

作　　者：张斌[1] 陈香香[1] 徐鹏[1] 潘华炜[1] 

机构地区：[1]江苏省水利勘测设计研究院有限公司

出　　处：《水利水电工程设计》2012年第4期19-20,56,共2页Design of Water Resources & Hydroelectric Engineering

摘　　要：消能设计是水工建筑物设计的重要工作之一,消能计算通常根据《水闸设计规范》编列公式计算。但当下游无水或水深非常小的情况下,消能公式无法计算或水流出池落差过大而导致计算不准确、不可靠。根据江苏省某小水库除险加固溢洪闸改建工程实例,针对下游无水情况采用消力池尾坎堰流方式进行了消能计算分析,提出一种下游无水情况下消能计算的方法。Energy dissipation design is one of the important parts in hydraulic structures design.It is usually calculated based on the formula in Design Specification for Sluice.When there is no water or shallow water at downstream,the energy dissipation formula can not be used or the calculation is inaccurate and unreliable due to large water fall.This article makes energy dissipation calculation and analysis with end sill weir flow method of stilling basin by taking the reinforcement work of a small reservoir spillway gate in Jiangsu Province as an example,and puts forward a kind of energy dissipation calculation method in the case of no water at downstream.

关 键 词：消能计算 下游无水 尾坎堰流 

分 类 号：TV653[水利工程—水利水电工程]