摘要
引水隧洞受闸门启闭影响,其水流大都为非恒定流,传统方法采用恒定流模型进行糙率,存在一定偏差。为提高糙率反推精准度,文中以辽宁省某引水隧洞工程为实例,结合水动力学模型进行糙率反推,并对其过水能力进行复核计算。结果表明:和原型观测数据对比,采用水动力学模型的糙率反推值更为合理,引水隧洞可满足现状过水能力设计要求。
Under the influence of gate opening and closing,the flow of diversion tunnel is mostly non-constant flow.The traditional method uses a constant flow model for roughness reversal,and there are certain limitations.In order to improve the precision of roughness reversal,this paper takes a diversion tunnel project in Liaoning province as an example,combines the hydrodynamic model to carry out roughness reversal,and calculates the water passing capacity.The results show that,compared with the prototype observation data,the roughness of the hydraulic model is more reasonable,and the diversion tunnel can meet the design requirements of the current water-passing capacity.
出处
《东北水利水电》
2020年第7期34-37,72,共5页
Water Resources & Hydropower of Northeast China
关键词
水动力学模型
引水隧洞
糙率反推
过水能力复核
辽宁省
hydrodynamic model
diversion tunnel
roughness reversal
water capacity review
Liaoning Province
