CONSTRUCTION METHOD FOR LARGE-CROSS SECTION, LARGE-DEPTH UNDERGROUND WALL

摘要

PURPOSE:To construct an excavation groove with a conventional excavator without forming an inner wall by bracing or inverted lining in constructing a large-cross section, large-depth cylindrical underground wall. CONSTITUTION:Linear excavation grooves with the preset length are excavated in advance at a preset interval over the peripheral direction in the direction perpendicular to the curve of an underground wall A, concrete is placed in the excavation grooves, and wall-shaped bodies 1 or columnar bodies are constructed in advance. The ground between the adjacent pre-wall-shaped bodies 1 or columnar bodies is excavated, concrete 2 is placed, and the concrete 2 and the pre-wall-shaped bodies 1 or columnar bodies are integrated to form a cylindrical underground wall.