Universal equipment for constructing linings (preliminary roofs, arches, vaults) and complementary treatments in underground excavations

摘要

Universal equipment which consists of a metal structure formed by a portal with two arches braced in parallel and on which runs a mast-carrier carriage which erects a submast with the possibility of three-dimensional orientation via a kinematic system, having a translational movable unit on which the hydraulic plant is installed. IMAGE