基于水气两相模拟的薄水舌、大落差水力特性分析及结构影响分析  

Hydraulic Characteristics and Structural Influence Analysis of Thin Water Tongue and Large Drop Based on Water-Vapor Two-phase Simulation

作　　者：毛延翩[1,2] 赵鲲鹏 申赵勇 谭大文 侯春尧 MAO Yanpian;ZHAO Kunpeng;SHEN Zhaoyong;TAN Dawen;HOU Chunyao(China Yangtze Power Co.,Ltd.,Wuhan 430000,Hubei,China;State Key Laboratory of Water and Sediment Science and Water Conservancy and Hydropower Engineering,Tsinghua University,Beijing 100084,China;Changjiang Survey,Planning,Design and Research Co.,Ltd.,Wuhan 430010,Hubei,China;National Dam Safety Research Center,Wuhan 430010,Hubei,China;River Basin Complex Administration Center,China Three Gorges Corporation,Ltd.,Yichang 443100,Hubei,China;Three Gorges Jinshajiang Chuanyun Hydropower Development Co.,Ltd.,Yongshan 657300,Yunnan,China)

机构地区：[1]中国长江电力股份有限公司,湖北武汉430000 [2]清华大学水沙科学与水利水电工程国家重点实验室,北京100084 [3]长江勘测规划设计研究有限责任公司,湖北武汉430010 [4]国家大坝安全工程技术研究中心,湖北武汉430010 [5]中国长江三峡集团有限公司流域枢纽运行管理中心,湖北宜昌443100 [6]三峡金沙江川云水电开发有限公司永善溪洛渡电厂,云南永善657300

出　　处：《水力发电》2024年第3期54-59,93,共7页Water Power

摘　　要：对高拱坝深孔小开度泄流时,薄水舌、大落差条件下的水力特性及对水垫塘底板结构影响进行分析。通过水力学规范公式、刘培清等人总结的经验公式对不考虑空气阻力、掺气作用时的临底水力特性进行分析;并考虑水气两相作用,采用数值模拟方法对比研究薄水舌、大落差条件下,空气对水舌的阻力及掺气作用,分析临底水力特性及结构影响,为通过坝身孔口实现水垫塘反充水的思路提供支撑,为类似研究和工程应用提供借鉴和参考。The hydraulic characteristics of high arch dam under the condition of thin tongue and large drop and the influence on the bottom structure of water cushion pond are analyzed.Based on the hydrodynamic standard formula and the empirical formula summarized by Liu Peiqing,et al,the hydraulic characteristics of bottom-facing water without considering the air resistance and air entraining are analyzed respectively.The violent interaction between water and air under the condition of thin water tongue and large drop is illustrated by using the water-vapor two-phase numerical simulation method,and the hydraulic characteristics of the bottom flow and the influence on the structure are analyzed,which provides support for the idea of realizing water backfilling of the water cushion pond through the orifice of dam body,and provides reference for similar studies and engineering practices.

关 键 词：高拱坝 水垫塘 水气两相 掺气 冲击动水压力 

分 类 号：TV314[水利工程—水工结构工程] TV135