Study on the Influence of Different Ventilation Methods on the Ventilation and Cooling Effect of High Ground Temperature Construction Tunnel
In order to compare the cooling effect of ventilation in high ground temperature tunnel construction under different ventilation conditions,fluent was used to establish sidewall press-in ventilation and hybrid ventilation models,and numerical simulations were carried out.At the same time,the temperature and velocity distribution law of the tunnel under the two ventila-tion modes of the high ground temperature tunnel were studied,and the advantages and disadvantages of the two ventilation meth-ods were compared,and the ventilation method with better cooling effect was obtained.The results showed that for the construc-tion of high ground temperature tunnel,the larger the airflow velocity is,the more obvious the cooling effect is.Compared with the hybrid ventilation,the side wall press-in ventilation can effectively reduce the temperature near the tunnel face and improve the safety and efficiency of the construction,while the hybrid ventilation can cool the tunnel face and the tunnel entrance at the same time.
tunnel ventilationventilation coolingnumerical simulationhigh temperature tunnelsventilation air speed
NETL
NSTL
万方数据
维普
