In order to predict the influence range of flood discharge atomization of Xiakoutang Hydropower Station,the corresponding numerical model is developed.The numerical model is verified by the prototype observation data of the flood discharge atomization of Jiangya Hydropower Station,the calculated results are consistent with the observation data,which indicates that the numerical model is reasonable.The flood discharge atomization of 5 different operating conditions of Xiakoutang Hydropower Station is predicted based on the verification model.The results show that the fight bank power plant and the downstream traffic bridge are located outside the drizzle area(10 mm/h～ 0.5 mm/h)and not affected by the atomized rain in the absence of wind and longitudinal wind speed 15 m/s conditions and all operating conditions,while the left and right sides of the slope in the dam within 200 m are in heavy rain area and affected by the greater impact of atomized rain.%为了预测峡口塘水电站泄洪雾化的影响范围,建立了相应的数值计算模型,利用江垭水电站泄洪雾化的原型观测资料对数值模型进行验证,计算结果与原观资料基本一致,表明该数值模型是合理的.利用验证的计算模型对峡口塘水电站5种不同工况下泄洪雾化进行预测,计算结果表明无风以及纵向风速15 m/s条件下,各级工况右岸电厂以及下游交通桥均位于毛毛雨区(10 mm/h～0.5mm/h)外,未受到雾化降雨的影响,而坝下200 m范围内左右两岸边坡均处于暴雨区,受雾化降雨影响较大.
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