The underground powerhouse of Xiluodu Hydropower Station is buried deeply, with few roads direct to the outside, long rout and densely distribution of caverns, so that it is difficult to ventilate.

• 摘要溪洛渡水电站地下厂房洞室群埋层深、直接对外的通道少、线路长、洞室群密集，通风散烟难度非常大。