A TUNNELING MACHINERY AND A METHOD OF PROVIDING A CONCRETE TUNNEL BASE

摘要

A device for pouring concrete in a bottom section of a tunnel enclosed in a tunnel lining, comprising a pouring platform , a concrete receiving and pumping platform (18), a plurality of trailers (40) arranged in a row between said placing platform and said concrete receiving and pumping platform (18). Each trailer (40) comprises a support (46) for a concrete pipeline (22) extending from the concrete receiving, pumping platform (18) to the pouring platform, wherein said concrete receiving and pumping platform (18), said trailers (40) and said placing platform are connected to each other to form a train (10) and are supported by wheels engaging said tunnel lining. Propelling means are arranged to propel said train with said placing platform leading.