Overlapping tunnels will influence each other during construction stage,and will result in a series of problems such as ground subsidence controlling,particularly for watery and weak surrounding rocks in shallow depth.

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.

Construction technology of soft surrounding rock tunnel with shallow cover and lateral pressure;

Construction at the Beijing End of Kaoyishan Tunnel on the Jingzhu High-Speed Road in Shallow Soft Surrounding Rock ——Construction Technique of the Large-Span Road Tunnel;

On the short step construction technology of the soft surrounding rock in the Dawoshan mountain tunnel entrance;

All steps simulating of middle-wall method in tunneling engineering with soft and weak surrounding rock;

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