T T System installing the waterproof unity type sheet to the tunnel shotcrete layer by the velcro fastener device and structure of the velcro fastener device and method constructing the waterproof sheet on the arch directional tunnel

摘要

In the present invention, the position of the detachable attachment and detachment of the free wing of the T-shaped velcro to the nonwoven fabric of the integral sheet with respect to all the excavations and the curved surface (S) is free, so that all excavations from the apex crown to all areas of I→II→III→IV And overlapping and spacing adjustment of the overlapping portion of the ``integrated sheet 1500'' through ``overall coordination and adjustment'' with respect to the curved surface S, together with ``local fixation and adjustment'' through ``local response and adjustment'' for each area → It is an invention in which the excitation distance is gradually minimized by the method of "adhesive fixing".