LEADING AND PROPELLING ENCLOSURE SLEEVE FOR DRYING A TUNNEL, CAPABLE OF CONSTRUCTING IN STAGES WITH THE ENCLOSURE SLEEVE HAVING A DOUBLE STRUCTURE

摘要

PURPOSE: A leading and propelling enclosure sleeve for drying a tunnel is provided to performance propelling work more effectively with a propelling jack.;CONSTITUTION: A leading and propelling enclosure sleeve for drying a tunnel comprises a leading enclosure sleeve(10) and a propelling enclosure sleeve(20). The leading enclosure sleeve comprises an upper plate(11), a lower plate(12), a plurality of steel plate partitions(13), a first support jack(14), a earth pressure support cylinder(15), a sliding groove, a soil transfer conveyor(17), and a cutout hole(13a). A plurality of the steel plate partitions is vertically installed between the upper plate and the lower plate at a constant interval. The first support jack supports the upper plate and the lower plate with a constant height. The earth pressure support cylinder is formed in the steel plate partitions to prevent a leading part of the upper plate from sagging. The sliding groove is formed in the upper plate to be opened toward the rear. The soil transfer conveyor transfers excavated soil to a gallery pipe. The cutout hole is formed in the steel plate partitions to prevent interference with the soil transfer conveyor. The propelling enclosure sleeve comprises a propelling jack(21), a guide unit(26), a second support jack(24). The guide unit is formed in a sliding groove to be inserted. The second support jack supports the earth pressure vertically.;COPYRIGHT KIPO 2012