process for the manufacture of large-scale over several tübbingringe wide recess in tübbingausbau a tunnel or shaft and a framework for the implementation of the procedure

摘要

a recess in a tübbingringen constructed tunnel or shaft which is tübbingausbau (1), a recess (4) umziehender closed frame (5) tübbings (6, 7, 11, 12), whose head and fußriegel (6) 7) einzeltübbings (6