Abstract:

The stateoftheart of the mechanization of tunnel construction is presented. The problems, i.e. lack of professional researching and manufacturing company of tunnel construction equipment in China, unbalance of tunnel construction mechanization, inadequate use or abandon of some largescale equipment and lack of feasible equipment for special projects, are pointed out. The construction mechanization level of some key tunnels in comment surrounding rocks in China can meet the construction requirements, and that of some tunnels in bad surrounding rocks varies much. The author suggests that the researching and manufacturing of construction equipments are very important for related presupport technology. Some tunnel construction equipments used in Japan, including equipments related to surrounding rock strengthening or presupport, i.e. steel pipe advance support dedicated drilling and grouting machines, hydraulic rock drilling jumbos and bending drilling machines, equipments which can improve construction efficiency, i.e. drilling machines and shotcrete machines, invert trestles (single span, double span and triple span) and intensive construction machines, i.e. multiboom TWS for Tunnel Work Station and removable powerful ventilation fans, are introduced emphatically. It is very important to improve the tunnel construction mechanization level, shorten the construction schedule and guarantee the construction quality. The construction mechanizations of TBM method and shield method have been achieved and it should be also the trend for mining method.

Key words: tunnel, mining method, equipment, construction mechanization