It is an effective way to use nature source that air in subway exchanges with outer air by draught relief shaft,based on the piston effect of train,provided that the temperature out door is lower than that in subway.

Though the simulative calculation and analysis,as long as piston vents on two sides of each station are in connection with the tunnel and the previous system which the top of railway and the bottom of platform in station is reconstructed exhaust.

Construction technology of the ventilation shaft in Mingyueshan tunnel;

Rock burst prediction for ventilation shaft of Qinling highway tunnel and its countermeasures

1 ventilation shaft construction technology of Extra-long Highway Tunnel of Qinling Zhon-gnan Mountain used BMC-300 type raise boring method.

Because of ventilating requirement of cross-ocean tunnel, especially long distance cross-ocean tunnel, ventilating shaft should be set in the sea.

Because ventilating requirement of cross-ocean tunnel, expecially long distancecross-ocean tunnel, ventilating shaft should be set at sea.

In the paper the ventilated shaft layout,structural design and process of construction of XueFengShan tunnel are introduced in details,which will offer a reference of the tunnels in the future.

This paper studies the second Ventilated Shaft of Qinling Zhongnanshan tunnel in Xi an-Ankang freeway, and makes a research of the stability of the shaft surrounding rock through the construction process in different depth.

The necessity of ventilated shaft application in ventilation system of Urban Traffic Link Tunnel in Suzhou railway station was demonstrated.