METHOD FOR CONSTRUCTING UNDERGROUND STRUCTURE

• Main Authors: UEMURA KENJIRO, UEMURA MAKOTO, MARUTA SHINICHI
• Format: Patent
• Language: English; Japanese
• Published: 15.09.2022
• Subjects: EARTH DRILLING; FIXED CONSTRUCTIONS; GALLERIES; LARGE UNDERGROUND CHAMBERS; MINING; SHAFTS; TUNNELS

To provide a method for constructing an underground structure capable of shortening the entire process by segmenting a concrete box and assembling it behind a cutting edge, further, since the concrete box body is not propelled, the propulsion equipment only needs to propel the cutting edge, and capable of saving the labor of the propulsion equipment in long-distance construction.SOLUTION: In a method for constructing underground structures such as tunnels replacing row groups of box-shaped roofs and concrete boxes by inserting box-shaped roofs, which are rectangular steel pipes as protective work, from a starting shaft, arranging them in a row group in an U-shape, and pushing out the box-shaped roofs, a concrete box assembling step of assembling the concrete box at a rear part of a rectangular or gate-shaped steel shell having a cutting edge, which is composed of segments, a rows of box-shaped roofs propelling step of propelling a row of box roofs by the steel shell as a propulsion reaction body, and a steel shell propelling step of propelling the steel shell with the concrete box as a propulsive reaction body after advancing the rows of box roofs are sequentially repeated.SELECTED DRAWING: Figure 1 【課題】コンリート函体をセグメント化し、刃口後方で組立てる方式のため、全体工程の短縮化が図れ、また、コンリート・函体は推進しないため、推進設備は刃口を推進するだけで良く、長距離施工では推進設備の省力化が図れる地下構造物の施工法を提供する。【解決手段】防護工としての矩形鋼管である箱形ルーフを発進坑から挿入して箱形ルーフの列群としてコ字形に配置し、箱形ルーフを押し出すことで箱形ルーフの列群とコンクリート函体を置き換えるトンネル等の地下構造物の施工法であり、コンクリート函体はセグメントで構成し、先端を刃口とした矩形または門型の鋼製殻体後部でこれを組立て、箱形ルーフの列群は鋼製殻体を推進反力体として推進させ、箱形ルーフの列群の前進後、鋼製殻体をコンクリート函体を推進反力体として推進させる、前記コンクリート函体の組立工程、箱形ルーフの列群の推進工程、鋼製殻体の推進工程を順次繰り返す。【選択図】図１