Abstract: The rapid development of civil aviation industry in China has led to the increased demand for underground space in airfield areas, especially under crossings to connect different functional zones. We summarized here the key points in managing, planning and constructing under crossing projects in airfield areas based on our investigation and analyses of several such projects. In project managing, it is necessary to establish a safety management system throughout the life of the project in terms of safety risk management and complying with regulations for non-stop construction or construction in forbidden zones. In planning, the balances between short- and long-term planning, use of ground and underground space, development and conservation should be considered. The organization and layout of the functional zones in the airfield area should determine the layout and scale of the underground crossing. Finally in constructing an under crossing project, the deformation control value for under crossing construction should first be established based on the requirements of airfield operation, followed by use of fine design, micro-disturbance construction and high precision monitoring to balancing safety and economy, with implementation of the sub-zone, sub-stage and sub-grade control rule. These key points may in general guide under crossing construction projects in airfield area.

Key words: airfield area, underground space, under crossing, management, construction