Patent ID: 8979434
Filing Date: 2015-03-17
Classification: E21D

Abstract:
1. A tubbing lining forming a tubular inner shell for a tunnel or shaft, comprising: a plurality of tube sections successively arranged in a longitudinal direction, each tube section formed by a tubbing ring having annular end surfaces, wherein the successively arranged tubbing rings are aligned in relation to each other at facing annular end surfaces having an annular groove and forming an annular joint between each two successively arranged tubbing rings, said annular groove configured to accommodate a sealing ring, wherein each tubbing ring comprises a plurality of tubbing segments which are successively arranged in a circumferential direction and have end faces with outer contours, with butt joints being formed between abutting end faces of the tubbing segments, and a deformable flexible element arranged in at least one butt joint and having an outer cross-sectional contour and end faces, wherein the outer cross-sectional contour of the deformable flexible element parallel to the butt joint matches the outer contours of the end faces such that the deformable flexible element completely covers at least one of two abutting end faces, wherein the deformable flexible element comprises a recess in form of a groove formed at the end faces of the deformable flexible element and extending perpendicular to the longitudinal direction and having a substantially semi-circular cross-section that substantially matches a cross-section of the annular groove and is aligned with the annular groove, said recess configured to receive the sealing ring, wherein at least one of the tubbing segments in conjunction with the deformable flexible element forms a common prefabricated element, with the prefabricated element being formed of a steel reinforcing framework encased in concrete to which the deformable flexible element is connected in a force-locked manner.