Station boring machine for underground transit rail station

摘要

This invention relates to earth excavation machines and moreover particular to tunnel boring machines for underground station box construction. The primary object of present invention is to provide tunnel boring machine for station box generally rectangular cross-section configuration .This station boring machine is classified into Hard rock SBM and Earth pressure SBM consists of upper level cutter head for concourse level and lower level cutter head for platform level. Where the SBM advances to earth face by self crawling system and extension-contraction of thrust cylinders over the precast segments interconnected by ring rods suitably shaped to form rectangular cross-section station box.