Optimization on Ventilation Scheme for Construction of High-Altitude Railway Tunnel
In order to solve the technical problems of ventilation when constructing railway tunnels at high altitude,low pressure and lack of oxygen,this paper takes the Qilian Mountain Tunnel of Gan-Qing section of the second double line of Lanzhou-Xinjiang Railway as an example and relies on the original ventilation design scheme,designs an optimized ventilation scheme for the existing construction of high-altitude tunnels based on the parameter test data such as atmospheric pressure,temperature,relative humidity at multiple locations and multiple points in the tunnel,as well as wind speed at each measuring point when each group of fans is running,and obtains the required air volume of the tunnel in the process of actual construction through theoretical calculations.After on-site verification,the optimized ventilation scheme for high altitude tunnel construction has improved the efficiency of construction personnel and mechanical equipment,and is technically feasible and economical.The research results can provide reference for the design of ventilation system for tunnel construction in high-altitude cold areas.
NETL
NSTL
万方数据
