Tunnel ventilation has always been a difficult problem that restricts tunnel construction.The quality of ventilation directly affects construction efficiency,working environment,and the physical health of workers,especially in high-altitude tunnels.Under the influence of factors such as high altitude,low air pressure,and low oxygen content,there are difficulties such as high-altitude hypoxia,large efficiency reduction of internal combustion engines,and low efficiency of workers.Efficient ventilation is one of the effective measures to effectively solve these problems.This article discusses the gallery ventilation scheme of a certain plateau long tunnel and expounds from the aspects of ventilation calculation,fan selection and configuration,wind speed monitoring and measurement point layout,etc.It provides applicable ventilation scheme design results,which meet the technical requirements of ventilation construction for long tunnels and can provide reference for similar engineering construction.
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