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.

YQ9 on LuoZhan Railway,and the technical specification of large pipe shed construction,the Paper briefly analyzes and summarizes the construction technique of large and long pipe shed that penetrates through the Grade Ⅵ surrounding rock,which provides reference for similar works.