The design of the Qiaojia Tunnel on the Luqiao Expressway in Yunnan Province has a long gas section and severe gas disasters.In order to ensure construction safety and achieve real-time and full coverage detection and monitoring of toxic and harmful gases,a comprehensive detec-tion,monitoring,and safety prevention and control technology method of intelligent monitoring sys-tem,manual detection,and key operation tracking detection has been adopted.Combined with the established gas warning management mechanism and measures,through on-site practice,the con-struction period has been advanced by 2 months compared to the planned period,and the overall gas concentration has remained stable within the safety control range of 0.00％to 0.16％,achieving good safety and economic benefits,which has reference significance for similar tunnels.
万方数据
维普
