| 摘要 |
The invention relates to tubbing works embodied as a tubular inner shell of a tunnel or shaft, comprising tubbing rings (2) which are arranged successively in the longitudinal direction, aligned in relation to each other with the front annular surfaces thereof (7) in an annular joint (3). Said tubbing rings (2) are respectively made from adjacent tubbings (4) in the direction of the periphery, respectively forming a butt joint (9) between the front sides thereof (13). According to the invention, a peripheral annular seal (8) which can be filled with a medium and which can be modified in the cross-section is arranged in at least one annular joint (3). |
