某隧洞工程采用TBM施工，六边形预制钢筋混凝土管片衬砌。

One tunnel is being constructed by TBM. Its lining adopts precast concrete hexagonal segment.

youdao

某隧洞工程采用TBM施工，六边形预制钢筋混凝土管片衬砌。

One tunnel is being constructed by TBM. Its lining adopts precast concrete hexagonal segment.

youdao