INTERMEDIATE WALL BODY-UPPER FIXING-TYPE CONSTRUCTION METHOD OF THREE-ARCH EXCAVATION TUNNEL LINING, FOR FACILITATING CONSTRUCTION AND FOR EFFECTIVELY DISCHARGING UNDERGROUND WATER OF ADJACENT GROUND

摘要

PURPOSE: An intermediate wall body-upper fixing-type construction method of a three-arch excavation tunnel lining is provided to reduce the occupied area of a road by narrowing the spaced distance between tunnels and to reduce the construction cost and a term of works. CONSTITUTION: In an intermediate wall body-upper fixing-type construction method of a three-arch excavation tunnel lining, lining concrete is placed to the upper side of an intermediate wall body(20) and the thickness of the lower part of the intermediate wall body is reduced to the extent of the thickness of the lining concrete. The lower part of the intermediate wall body is formed in one of a pillar shape, an arch shape, and a wall shape.