水电站近坝区水沙输移二维数值模拟  

Two-dimensional Numerical Simulation of Water and Sediment Transport in the Near Dam Area of Hydropower Station

作　　者：陈雨晴 丁宇飞 郑晓刚[1,2] 陈日东[1,2] CHEN Yu-qing;DING Yu-fei;ZHENG Xiao-gang;CHEN Ri-dong(State Key Laboratory of Hydraulics and Mountain River Engineering;College of Water Resource and Hydropower,Sichuan University,Chengdu 610065,China)

机构地区：[1]四川大学水力学与山区河流开发保护国家重点实验室,四川成都610065 [2]四川大学水利水电学院,四川成都610065

出　　处：《水电能源科学》2020年第5期66-70,共5页Water Resources and Power

基　　金：国家自然科学基金项目(51609161)。

摘　　要：以萨拉康水利工程为例,采用平面二维水沙模型对近坝区域的水沙运动进行计算研究,分析了敞泄排沙条件下上引航道、泄洪闸、厂房等区域的泥沙淤积分布。结果表明,萨拉康水利枢纽工程运行30年后,泄洪闸前的泥沙淤积不会影响闸门安全运行;上引航道口门区主要受主流回流的影响,产生回流淤积;厂房段的拦沙坎与冲沙底孔可有效保护厂房进水口。Taking the Sanakham Hydropower Station as an example,the plane 2D water and sediment model was used to calculate the water and sediment movement near the dam area.And then the sedimentation distribution of the upper approach channel,flood gate,powerhouse and other areas were analyzed under the condition of open discharge.The results show that after 30 years of operation of this project,sedimentation before the flood gate will not affect the safe operation of the gate.the entrance area of the upper approach channel is mainly affected by the mainstream backflow,resulting in backflow siltation;The debris barrier and sand duct in the powerhouse section can effectively protect the water inlet of the plant.

关 键 词：水电站 坝区泥沙淤积 二维水沙数学模型 有限体积法 显隐耦合算法 

分 类 号：TV145[水利工程—水力学及河流动力学]