对地下水电站主厂房母线层端部火灾进行了模拟研究,结果表明:母线层端部发生火灾时,烟气通过吊物孔和楼梯间很容易到达水轮机层;母线层空间较狭小,易形成高温、高烟气浓度和低可见度;水轮机层空间也易形成高烟气浓度和低可见度,但温度较低;发电机层空间大,烟气浓度小,温度较低,但由于空气的卷吸,火灾发生一段时间后可见度很低。机械排烟能有效降低发电机层的烟气浓度和温度。 The simulation results show that when the end of the busbar layer fires, the flue gas can easily reach the turbine layer through the hole and the stairway; the space of the busbar layer is small and it is easy to form the high temperature , High flue gas concentration and low visibility; turbine layer space is also easy to form a high flue gas concentration and low visibility, but the temperature is low; generator layer space, flue gas concentration is small, the temperature is low, but due to air entrainment, Visibility is low after a period of fire. Mechanical exhaust can effectively reduce the flue gas concentration and temperature of the generator layer.