单戗堤立堵截流龙口的水力特性试验研究  

Experimental study on hydraulic characteristics of gap in end-dumping closure with single embankment

作　　者：胡志根[1] 孟德乾[1] 黄天润[2] 冀培民[2] 

机构地区：[1]武汉大学水资源与水电工程科学国家重点试验室,湖北武汉430072 [2]中国水电顾问集团西北勘测设计研究院,陕西西安710065

出　　处：《水利学报》2011年第4期414-418,共5页Journal of Hydraulic Engineering

基　　金：国家"十一五"科技支撑计划项目资助(2008BAB29B02-5)

摘　　要：在水利水电工程截流过程中,截流龙口的局部落差、龙口水流流速、龙口水深以及龙口单宽流量等水力参数直接决定截流的难度。本文针对非对称和水流比降大的河道截流,采用物理模型试验方法,观测分析截流进占方式、龙口位置与龙口水流流态及其水力参数的关系,比较不同截流进占方式对水力参数的影响,给出单戗立堵截流龙口局部水力参数与截流困难程度之间的联系及其变化特性,为单戗堤立堵截流的计算分析和工程设计提供参考。The relationships between location of gap and flow pattern in gap as well as the relevant hydraulic parameters for different working mode of end-dumping closure with single embankment in a hydropower project, located in large gradient and asymmetric river channel, were studied by model test. The effects of closure working mode on hydraulic characteristics of flow in gap were investigated and the relationship between hydraulic parameters and the difficulty of closure was analyzed. The optimal location of gap in closure was suggested.

关 键 词：立堵截流 龙口水力参数 单戗堤 截流模型试验 

分 类 号：TV135.5[水利工程—水力学及河流动力学]