HEADRACE TUNNEL, METHOD FOR CONSTRUCTING HEADRACE TUNNEL, AND METHOD FOR REPAIRING EXISTING HEADRACE TUNNEL

摘要

PROBLEM TO BE SOLVED: To provide a headrace tunnel having high water cutoff performance even for high internal water pressure, capable of reducing damage to a tunnel lining body from external water pressure.;SOLUTION: A headrace tunnel T includes a high strength fiber hose body 20 which is installed in the tunnel space inside a segment lining body 40, in a hose form with woven high strength fiber, having a water conducting part S1 inside the hose. The high strength fiber hose body 20 includes a fixed hose part 21 which is impregnated with resin adhesive so as to be attached to the inner wall face of the segment lining body 40, and an unfixed hose part 22 which is in an unhardened state and is not attached to the inner wall face of the segment lining body 40, both of which are distributed in the circumferential direction.;COPYRIGHT: (C)2013,JPO&INPIT