Abstract:

In order to cope with the huge deformation of the highlystressed phyllite ground in the ridge section of Wushaoling tunnel, the construction program is constantly optimized, the construction technology is persistently improved, standard time duration is determined for each construction step and strict construction organization management is performed. In this way, a complete set of rapid construction technology is established, by means of which the huge deformation of the soft phyllite ground under high stress conditions can be effectively controlled. The guiding principles, construction methods, construction steps, standard time duration of each construction step and standard distances between various construction steps taken for the rapid construction of the ridge section of Wushaoling tunnel to control the huge deformation of the phyllite ground are presented in the paper.