LAGGING SEGMENT AND LAGGING SYSTEM HAVING A PLURALITY OF SUCH LAGGING SEGMENTS

摘要

The invention relates to a lagging segment (10) for lagging a tunnel (12) with a curved tunnel cross section, comprising a plurality of longitudinal beams (14), which extend in a longitudinal direction of the tunnel (12) when in the installed state, a plurality of crossbeams (16), which extend transversely to the longitudinal direction, and an extensive lining (18), which has a curved cross section and is supported both on the longitudinal beams (14) and on the crossbeams (16), wherein the longitudinal beams (14) and the crossbeams (16) form a load-bearing substructure (20), which has lateral edge sections (22) and a middle section (24) therebetween when viewed in the longitudinal direction, wherein the lining (18) is connected rigidly to the substructure (20) in the middle section (24) and is radially adjustable relative to the crossbeams (16) in the edge sections (22). Furthermore, the invention comprises a lagging system having a plurality of such lagging segments (10).