This paper mainly introduces the accessing method and two driving methods for large-span railway station tunnel on buried weak surrounding rock.

Construction technology of shallow burying big span tunnel in soft and weak surrounding rock;

Analysis on the treatment of the lining cracks of the shallow covered slope multi-arch tunnel in weak surrounding rock;

Construction technology of triple-line large-span weak surrounding rock of expressway;

Application of smooth blasting in weak surrounding rock excavation for the Aketage Mountain water conveyance tunnel;

Discussion on the critical technique in the construction oflong-span flat tunnel at the weak wall rock;

Research purposes:The structure is loose and the stability of wall rock is very bad because the opening body of the tunnel crosses the weak wall rock laterally,so the technical researches are done on the support in course of excavation of weak wall rock.

Research purposes: The researches are done on matching rapid construction technology with machinery for highland stressed weak wall rock tunnel for the purposes of setting performance of large-sized machinery in construction of highland stressed weak wall rock tunnel and providing mature and high efficient mode of matching construction machinery with construction technology.