跌坎型底流消能工混凝土底板冲磨破坏机理分析  

Erosion and Destroy Mechanism of Concrete Baseplate in Step-down Energy Dissipater

作　　者：张闻辉[1] 王海军[1] 郑雪[1] 钟志镭[2] 

机构地区：[1]昆明理工大学电力工程学院,云南昆明650051 [2]中国水电顾问集团昆明勘测设计研究院,云南昆明650051

出　　处：《昆明理工大学学报（理工版）》2010年第1期74-78,共5页Journal of Kunming University of Science and Technology(Natural Science Edition)

基　　金：云南省自然科学基金(项目编号:2006A0018M)

摘　　要：通过跌坎型底流消能工水力学试验和理论分析,研究了跌坎型底流消力池内底滚回流区、冲击区、附壁射流区水力特性及混凝土底板破坏机理,分析底板冲磨破坏类型分为大角度和小角度冲磨,并且分析比较了3个区域内临底流速之间的关系,得出临底流速的计算公式.Through mechanical test and theoretical research, the hydraulic characteristics of the flow near the floor of roll reflux, impact and wall jet regions in the step - down energy dissipater are made clear. The erosion and destroy mechanism of the concrete baseplate are studied. The erosion and destroy is classified into large an- gle and small angle types. The relationship between the velocities of the flow near the floor in three different areas is also analyzed. A formula to calculate the velocity of the flow near the floor is finally put forward.

关 键 词：消力池 水力特性 破坏机理 脉动压力 

分 类 号：TV135.2[水利工程—水力学及河流动力学]