深溪沟水电站泄洪闸消力池水力特性三维数值模拟研究  

Study on 3D Numerical Simulation of Hydraulic Characteristics of Sluice and Stilling Basin of Shenxigou Hydropower Station

作　　者：梁金松 宋志诚 刁奕 金靖林 郭川靖 刁明军[2] LIANG Jinsong;SONG Zhicheng;DIAO Yi;JIN Jinglin;GUO Chuanjing;DIAO Mingjun(Guodian Daduhe Pubugou Hydropower General Plant,Hanyuan Sichuan 625304;State Key Laboratory of Hydraulics and Mountain River Engineering,Sichuan University,Chengdu Sichuan 610065)

机构地区：[1]国能大渡河瀑布沟水力发电总厂,四川汉源625304 [2]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

出　　处：《四川水力发电》2023年第2期98-103,共6页Sichuan Hydropower

摘　　要：采用三维水气二相流数学模型,对深溪沟水电站现体型泄洪闸消力池在三个特征泄洪工况下的水力特性进行了数值模拟仿真计算研究,得到了泄洪流态、流场以及压强分布、紊动能和紊动能耗散率分布情况。计算结果显示,泄洪闸底板与进入消力池1:4斜坡之间的连接圆弧底板,由于半径偏小,存在稳定的较大负压,处于水跃区的闸墩——鱼背型尾墩圆弧两侧存在震荡波动型负压,负压临近区域出现空蚀破坏的可能性较大,数值模拟计算结果为分析判断泄洪闸流道、墩尾以及消力池底板的破坏原因提供了新的思路,为工程整改和制定工程的安全措施提供了理论依据,可供类似工程借鉴参考。Using the three-dimensional air-water two-phase flow model,the numerical simulation calculation of the hydraulic characteristics of the sluice and stilling basin of Shenxigou Hydropower Station under three typical discharge conditions is carried out to obtain the distribution of the discharge flow state,flow field,pressure distribution,turbulent kinetic energy and turbulent kinetic energy dissipation rate.The calculation results show that,due to the small radius of the circular arc floor connecting the spillway sluice floor and the 1:4 slope entering the still basin,there is a stable serious continuous negative pressure.And there is an oscillating negative pressure on both sides of the circular arc of the tail pier of the sluice pier,and a large possibility of cavitation damage in the area near the negative pressure.The numerical simulation results provide a new idea for analyzing and judging the failure reasons of the sluice passage,pier tail and the bottom floor of the stilling basin,and provide a theoretical basis for engineering rectification and the formulation of safe operation measures,which can be used as a reference for similar projects.

关 键 词：深溪沟水电站 泄洪闸 消力池 水力特性 数值模拟 

分 类 号：TM622[电气工程—电力系统及自动化] TV65[水利工程—水利水电工程] TV653.1