随着山区高速公路的发展,长大隧道施工在山区高速公路中所占比例大幅增长,而隧道通风是高速公路长大隧道运营及管理中的关键,地下风机房作为长大隧道的辅助通风巷道,以其断面多、跨度大、结构复杂、洞室交叉多、群洞效应明显等特点增加了工程施工难度,文章结合正在施工的山西省和榆高速公路云山隧道2号、4号专用通风斜井井底地下风机房,介绍了该类型地下风机房的施工技术方案和关键施工技术。 With the development of mountainous expressway, the proportion of long tunnel construction in mountainous expressway has risen sharply. Tunnel ventilation is the key to the operation and management of long tunnel in expressway. As an auxiliary ventilation tunnel of long tunnel , With its multi-section, large span, complex structure, multi-caverns and obvious effect of group holes and other characteristics of the project increased the difficulty of construction. Combined with the construction of Shanxi Yu and Yu Expressway Yunshan Tunnel No. 2, No. 4 dedicated ventilation Inclined shaft underground wind turbine room, introduced this type of underground wind turbine room construction technology programs and key construction techniques.