UNDERGROUND STRUCTURE CONSTRUCTION METHOD

• Main Authors: UEMURA KENJIRO, UEMURA MAKOTO, MARUTA SHINICHI
• Format: Patent
• Language: English; Japanese
• Published: 09.08.2022
• Subjects: EARTH DRILLING; FIXED CONSTRUCTIONS; GALLERIES; LARGE UNDERGROUND CHAMBERS; MINING; SHAFTS; TUNNELS

To provide an underground structure construction method capable of shortening the entire process because of a method of segmenting a concrete box and assembling it behind a blade, and capable of saving the labor of propulsion equipment in long-distance construction, since only the propulsion equipment is required to propel the blade because concrete and box bodies are not propelled.SOLUTION: In an underground structure construction method for constructing underground structures such as tunnels by placing a friction cut plate 7 on top of a box-shaped roof 6 which is a rectangular steel pipe as a protective work and penetrating from a starting hole 3 to a reaching hole, and leaving the friction cut plate and propelling only the box-shaped roof and replacing a row group of box-shaped roofs and a concrete box 19, the concrete box consists of segments, it is assembled in the rear of a rectangular or gate-shaped steel shell with a blade at a tip. The row group of box-shaped roofs is propelled by steel shells as propulsive reaction bodies. After the row group of the box-shaped roofs is advanced, the steel shell is propelled by the concrete box as a propulsive reaction force.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６を上にフリクションカットプレート７を配置して発進坑３から到達坑まで貫通させて配置し、このフリクションカットプレートを残置して箱形ルーフのみ推進させ、箱形ルーフの列群とコンクリート函体１９を置き換えることによりトンネル等の地下構造物を施工する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。【選択図】図１