大型水利枢纽泄洪雾化原型观测研究

发布时间：2018-07-01 10:35

本文选题：挑流消能 + 泄洪雾化　；参考：《长江科学院院报》2017年08期

【摘要】：大型水利枢纽,尤其采用挑流消能工的高坝工程,在泄洪时产生的雾化降雨强度远超自然降雨,由此对枢纽正常运行、泄洪区交通安全、周围环境等均构成危害。对金沙江下游溪洛渡水电站大坝深孔泄洪时雾化影响范围、降雨强度分布、气象特性等进行了重点观测研究。结果表明:溪洛渡水电站深孔泄洪雾化降雨强度分布呈现局部降雨强度大、降雨强度沿纵向及岸坡方向递减速度快的特点;观测工况下最大降雨强度达4 704 mm/h;观测时段自然风速未超过3.5 m/s条件下,泄洪区最大风速达16.3 m/s;自然气压为0 k Pa、空气湿度为85%左右时,最大气压约为96 k Pa,空气湿度为100%。观测成果一方面可对溪洛渡水电站岸坡防护设计进行验证,并为以后类似工程的岸坡防护设计提供参考,另一方面可为其他研究手段的完善提供丰富详实数据,具有重要价值。
[Abstract]:In large water conservancy project, especially the high dam project with high dam with high flow and energy dissipator, the atomization rainfall intensity produced during flood discharge is far from supernatural rainfall, which is harmful to the normal operation of the project, the traffic safety of flood discharge area and the surrounding environment. The influence range of atomization, the distribution of rainfall intensity and the meteorological characteristics of the deep hole flood discharge of Xiluodu Hydropower Station in the lower reaches of Jinsha River are studied. The results show that the intensity distribution of deep hole flood discharge atomization rainfall in Xiluodu Hydropower Station is characterized by large local rainfall intensity and fast decreasing speed of rainfall intensity along longitudinal and slope direction. The maximum rainfall intensity is 4 704 mm / h, the maximum wind speed in flood discharge area is 16.3 m / s when the natural wind speed is not more than 3.5 m / s, the maximum pressure is 0 KPA, the air humidity is about 85%, the maximum pressure is about 96 KPA, and the air humidity is 100. On the one hand, the observation results can verify the slope protection design of Xiluodu Hydropower Station, and provide reference for the slope protection design of similar projects in the future. On the other hand, it can provide rich and detailed data for the improvement of other research means, which is of great value.
【作者单位】：长江科学院水力学研究所;长江勘测规划设计研究院;湖北省水利水电规划勘测设计院;
【基金】：国家自然科学基金项目(51279013,51379020) 国家重点研发计划项目(2016YFC0401904) 中央级公益性科研院所基本科研业务费专项项目(CKSF2016046/SL)
【分类号】：TV135.2

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