刘家峡洮河口排沙洞水下岩塞爆通后多相流运动数值模拟  

Numerical simulation of multiphase flow motion after underwater rock plug blasting for Taohekou sediment tunnel in Liujiaxia hydropower station

作　　者：徐小武[1] 薛立梅[1] 李俊富[1] 吴希华[2] 

机构地区：[1]中水东北勘测设计研究有限责任公司,吉林长春130061 [2]水利部松辽水利委员会,吉林长春130021

出　　处：《东北水利水电》2013年第12期3-5,42,共4页Water Resources & Hydropower of Northeast China

摘　　要：泥沙淤积严重的水电站增建排沙洞,进水口多采用水下岩塞爆破方案。厚淤泥层的存在对岩塞口爆破会带来不利影响;在排沙洞运行过程中,若渣块进入洞内,也会影响排沙洞的正常运行,成为工程隐患。本文以刘家峡排沙洞岩塞口区及排沙洞为研究对象,采用Euler多相流模型,建立三维排沙洞水沙非恒定多相流计算模型,模拟正常蓄水位、淤泥层不同颗粒组成等条件下,排沙洞水下岩塞爆破后排沙洞中多相流运动过程,为排沙洞水下岩塞爆破方案设计提供参考。The new construction of sediment tunnel for hydropower station with severe sedimentation always choose the underwater rock plug blasting method for its intake. Heavy silt stratification will bring adverse effect to rock plug blasting. In sediment tunnel operation, if the slag fall into the tunnel,it will affect the normal operation and cause hidden troubles to project.Taking the area around rock plug and sediment tunnel as the research objects, the paper builds the three-dimensional multiphase water-sediment unsteady flow model with Euler multiphase flow, simulates the multiphase flow motion after underwater rock plug blasting under conditions of normal storage high water level or different compositions of particle in silt stratification, which provides reference for scheme design of sediment tunnel underwater rock plug blasting.

关 键 词：多相流 非恒定流 水下岩塞爆破 排沙洞 刘家峡 

分 类 号：TV149[水利工程—水力学及河流动力学]