Multi- drum die shielded tunnelling machine and the simultaneous digging Shank construction method

摘要

PURPOSE: To enable high speed execution of work to simultaneously carry out excavation work and segment assembly work and, at the same time, to make compact the length of a shield excavator. ;CONSTITUTION: In a double drum type shield excavator S connecting the front drum 2 provided with a cutter disc 1 on the front to the rear drum 4 having an erector device 3 assembling a segment C on the rear in the direction of the axis in a slidable manner, a plurality of slide jacks F having a stroke with an approximately half size of the width of the segment C are provided between the front drum 2 and rear drum 4. A plurality of shield jacks R having the approximately same stroke as the stroke put the width of the segment C, the stroke of the slide jacks F and the stroke of the slide jacks F and a segment built-up space (h) together are provided to the rear drum 4, and a controller for expanding and contracting the shield jacks R and slide jacks F separately is provided and is driven.;COPYRIGHT: (C)1996,JPO