Study on CO concentration distribution and ventilation scheme optimization in ultra-long drift-type high-altitude tunnel construction

Key Points

• CO concentration levels were assessed throughout the high-altitude tunnel.
• Findings indicate significant variations in CO levels during construction, necessitating enhanced ventilation measures.
• Analysis of air quality was conducted using real-time monitoring and mapped data across construction sites.
• Improved ventilation strategies may reduce safety risks, highlighting the need for rigorous air quality management in tunnel construction.