Planning for shield driven double track subway tunnel of box shape

摘要

Construction has commenced on the world's first shield driven double track subway tunnel of rectangular shape for the Kyoto Municipal Subway. Full-scale loading tests were performed on lining segments to confirm the adequacy of their design. Also, as a method by which a rectangular cross section can be excavated, manufacturing is in progress on a "Wagging Cutter Shield," which is equipped with rotating cutters that perform oscillating movement. This paper presents a report on the overall planning and the tests that were performed in the process of planning.