Ventilation Design And Safety Monitoring Of Non-coal Strata Gas Tunnels

Gas burning and explosion is one of the most serious disasters in railway and highway tunnel construction.Serious accidents happened in the history of tunnel construction in China’s railways and highways,which caused great losses and effects on the national economy and people’s safety.In recent years,more and more non coal strata gas tunnels have appeared during the construction of railway and highway tunnels in all parts of China.The study of ventilation design and calculation of non coal gas tunnel has important practical guiding significance for railway and highway safety during construction and operation period.This paper briefly introduces the case and the harm of the gas accident,a comprehensive detail of gas tunnel to the domestic and foreign research condition,and for the project in gas prediction monitoring,construction ventilation technology,ventilation fan selection,numerical calculation,numerical simulation and other aspects to carry out research.In the process of tunnel construction,gas monitoring is organized.In the aspect of tunnel ventilation,ventilation calculation and numerical simulation are carried out for low gas working area,and pressed ventilation is adopted,and stage ventilation layout and comparison of ventilation equipment are carried out.