Underground engineering is the extension of the construction function of ground engineering. Its ventilation and dehumidification system is much more important than ground engineering. At the same time, the ventilation and dehumidification system due to the special geographical environment of underground engineering also has some complications. Therefore, this paper analyzes the current status of the air quality in underground engineering and the causes of the dampness of the project. And some measures are put forward to improve the ventilation and dehumidification design of the underground project.%地下工程作为地面工程建筑功能的延伸,其通风除湿系统要比地面工程重要很多,同时因地下工程特殊的地理环境通风除湿系统也具有一定的复杂性.因此,本文对地下工程的空气质量现状和引起工程潮湿的原因详细分析,并对如何做好地下工程通风设计及除湿防潮设计,结合笔者多年施工经验提出几点改进措施.
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