RECONSTRUCTION METHOD OF LINING PART IN EXISTING 2-TRAFFIC LANE ROAD TUNNEL

摘要

PROBLEM TO BE SOLVED: To provide a reconstruction method of a lining part in a tunnel capable of constructing a new inner wall surface superior in durability while ensuring traffic of vehicles in the tunnel even during repair work without reducing tunnel cross section after repair in a short construction period at a low cost.;SOLUTION: The reconstruction method of a lining part in an existing 2-traffic lane road, includes: a cutting work using a cutting machine 4 equipped with a drum cutter 41 which has many bits on the peripheral face; an inner wall construction work including repair and a waterproof sheet work carried out within a work space 3 which is formed between inner wall face of the tunnel 1 and the outer wall face of a protector 2; and a shielding concrete placing work using a shielding frame 5 which is disposed movably with respect the protector 2 within the work space 3.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2018,JPO&INPIT