水库冲刷漏斗三维数学模型及其应用研究  

The Three Dimensional Model for the Scouring Funnel in Reservoir and Its Application

作　　者：陆俊卿[1,2] 张小峰[2] 董炳江[2] 梅志宏[3] 何成荣[3] 

机构地区：[1]环境保护部华南环境科学研究所,广东广州510655 [2]武汉大学水资源与水电工程科学国家重点实验室,湖北武汉430072 [3]中国水电顾问集团昆明勘测设计研究院,云南昆明650051

出　　处：《四川大学学报（工程科学版）》2008年第6期43-50,共8页Journal of Sichuan University (Engineering Science Edition)

基　　金：科技部973计划资助项目(2003CB415203)

摘　　要：针对底孔前水沙运动规律的特殊性,引入行进水深以及求解底部挟沙力的张瑞瑾公式方法,建立了能准确反映孔口泄流条件下局部水沙运动待性及河床形态变化过程的三维水沙数学模型,使模型能准确反映孔口泄流条件下局部水沙运动特性及河床形态变化过程。通过室内模型试验对模型中的悬沙计算模块以及推移质计算模块进行了验证,结果表明,模型可应用于水库坝前冲刷漏斗模拟。最后将模型应用于云南瑞丽江水库取水防沙效果分析中,并对水库取水排沙调度提出建议。Based on RNG model,the 3-D water and sediment model simulating the scouring funnel and water-sediment mixture flow in front of a reservoir dam was developed.Based on the flow characteristics in front of bottom orifice,the approach of water-depth and Zhang Ruijin formula were adopted to simulate the sediment-carrying capacity near the riverbed.The results of model tests of movement of suspended sediment and of bed load were adopted to verify the developed model.Finally the model was applied to analyze the ef...

关 键 词：冲刷漏斗 三维水沙模型 行进水深 推移质 纵剖面 

分 类 号：TV143[水利工程—水力学及河流动力学]