中文摘要：

以白鹤滩水电站为例,介绍了水电站地下厂房通风模型试验的相似理论及模型律,导出模型试验各参数相似比例尺。对水电站模型进行改变送风温度、控制中间层与母线洞的局部空调启停的试验,从而得到主厂房的温度分布和优化设计方案,对地下高大厂房模型试验及其空调系统设计有重要借鉴意义。

英文摘要：

Takes Baihetan hydropower station as an example, describes the similarity theory and model laws based on fluid mechanics. Presents calculation method of modeling similar scale. Obtains the temperature distribution of main plant and optimized design scheme of the hydropower station by experimental model with different supply air temperature, start-stop control of local air conditioning in busbar floor and bus tunnel. It will be important to guide model experiment and optimization design of air conditioning system in underground large plant.