泸定水电站大型长廊式调压井施工通风方案优化  

Optimization of Construction Ventilation Scheme for Large Gallery-type Surge Chamber of Luding Hydropower Stations Based on Numerical Simulations

作　　者：郑园媛[1] 叶敏敏[2] 李艳玲[1,3] 何坤[1] 

机构地区：[1]四川大学水利水电学院,成都610065 [2]国际小水电中心,浙江杭州310002 [3]四川大学水力学与山区河流开发保护国家重点实验室,成都610065

出　　处：《中国农村水利水电》2012年第6期124-127,共4页China Rural Water and Hydropower

摘　　要：泸定水电站大型长廊式调压井规模庞大、结构复杂、施工通风散烟难度大,传统的施工通风设计无法掌控真实通风效果,可能导致通风效果差、资源浪费。采用基于流体力学的三维数值模拟,研究其在不同通风方式下的通风流场形态,定量分析布帘设置、负压风机设置和最佳数量、完全负压风机方案等对改善其施工通风散烟效果的作用,为通风方案的优化设计提供理论依据和技术支持。The ventilation of Large Gallery-type Surge Chamber for Luding Hydropower Station is difficult to arrange for its large excavation volume and complex shape. And the traditional ventilation design may result in poor effect and resource waste without real flow field. 3-D numerical simulation of ventilation scheme based on fluid mechanics theory , which can simulate flow field factually and analyze the ventilation effects of different ventilation modes quantitatively, such as cloth curtain＇s settings, negative pressure fan ＇s setting and the optimal number and so on. The results show that this method can provide theoretic evidence and technical support for the ventilation design.

关 键 词：泸定水电站调压井 流体力学 三维数值模拟 通风流场 

分 类 号：TV554.15[水利工程—水利水电工程]