考虑雨强贡献的大型水电站枢纽泄洪雾化影响规律分析  

Analysis of Flood Discharging Atomization Influence Law of Large Hydropower Station with Rain Intensity Contribution

作　　者：路彤 张社荣[1,2] 王超[1,2] 王枭华[1,2] 梁熙文 陈光明 LU Tong;ZHANG She-rong;WANG Chao;WANG Xiao-hua;LIANG Xi-wen;CHEN Guang-ming(State Key Laboratory of Hydraulic Engineering Simulation and Safety,Tianjin University,Tianjin 300072,China;School of Civil Engineering,Tianjin University,Tianjin 300072,China;PowerChina Kunming Survey,Design and Research Institute Co.,Ltd.,Kunming 650051,China)

机构地区：[1]天津大学水利工程仿真与安全国家重点实验室,天津300072 [2]天津大学建筑工程学院,天津300072 [3]中国电建集团昆明勘测设计研究院有限公司,云南昆明650051

出　　处：《水电能源科学》2024年第1期153-156,148,共5页Water Resources and Power

摘　　要：泄洪雾化对两岸边坡的影响一直是水电枢纽长期运行安全关注的重大问题。针对西南水电站枢纽泄洪雾化影响问题,采用随机喷溅数学模型分析了雾化影响规律,并对该模型求解方法进行了改进,在综合考虑复杂地形、水舌风、自然风及水滴飞行过程等因素的同时,以西南地区GS水电站为依托,对不同泄洪工况下的雾化降雨进行预测。结果表明,泄洪方式、地形及自然风在大型水电站雾雨区分布形态中起主导作用。GS水电站不同工况下雾化降雨呈现沿河谷两岸边坡竖向爬升的趋势,暴雨区沿左岸最高扩散至2236 m高程,右岸扩散至2188 m高程,最大纵向长度为815 m,暴雨中心雨强达600~1000 mm/h。研究成果为未来窄河谷、大规模水电站工程泄洪出口处的雾化影响分析提供了参考依据。The influence of flood discharge atomization on both sides of the slope has always been a major concern for the long-term operation safety of hydropower hub.Aiming at the problem of atomization of discharge flood in southwest hydropower station,the random spatter mathematical model was used to study the atomization influence law.The model solving method was improved.Considering complex terrain,water tongue wind,natural wind and water droplet flight process,based on GS Hydropower Station in Southwest China,the fogged rainfall under different discharge conditions was forecasted.The results show that the discharge mode,topography and natural wind play a leading role in the distribution pattern of fog and rain area of large hydropower station.Under different working conditions of GS hydropower station,the atomized rainfall showed a vertical climbing trend along the slopes of both sides of the river valley.The rainstorm area spread to the highest elevation of 2236 m along the left bank and 2188 m along the right bank,the maximum longitudinal length was 815 m,and the rainstorm center rainfall intensity reached 600-1000 mm/h.The research results provide a reference for analysis of atomization effects at the discharge outlet of narrow river valley and large-scale hydropower station projects.

关 键 词：泄洪雾化 随机喷溅 河谷地形 风场 降雨强度分布 

分 类 号：TV741[水利工程—水利水电工程]