INSTALLATION METHOD AND INSTALLATION EQUIPMENT OF TUNNEL SECONDARY LINING CONCRETE

• Main Authors: TSUTSUI TAKANORI, IWAI YOSHIAKI, KUMAGAI KOJU, NAKAHIRA NORIFUMI, TAKINAMI MASUMI
• Format: Patent
• Language: English; Japanese
• Published: 16.05.2019
• Subjects: EARTH DRILLING; FIXED CONSTRUCTIONS; GALLERIES; LARGE UNDERGROUND CHAMBERS; MINING; SHAFTS; TUNNELS

To provide an installation method and an installation equipment of tunnel secondary lining concrete which eliminate processes in replacement of pipings and in cleaning as much as possible, and which allows concrete installation amount from a blow-up port in a crest to be reduced and concrete installation without flowing concrete for a long distance to prevent material from being separated in order to secure quality of concrete.SOLUTION: An installation method comprises: a process installing concrete from an inspection window arranged in a sliding center to a location near a shoulder area between the sliding center and a water proof sheet; a process installing concrete to a height of a position, at which the inspection window in a crest is provided, by inserting an installation pipe rotatable in a horizontal direction between the sliding center and the water proof sheet through the inspection window in the crest of the sliding center by bending the installation pipe in a periscope-like shape; and a process installing concrete from a blow-up port in the crest after switching a concrete installation port to the blow-up port.SELECTED DRAWING: Figure 1 【課題】本発明は、配管の切替えの手間と清掃の手間をなるべく少なくし、天端吹上げ口からの打設量も減らすことが出来、かつコンクリートの品質を確保すべく材料分離を発生させないようにコンクリートを長距離流動させないでコンクリートの打設を行えるトンネル二次覆工コンクリートの打設工法および打設装置を提供する。【解決手段】スライドセントルに設けられた検査窓からコンクリートを前記スライドセントルと防水シートの間の肩部近傍位置まで打設する工程と、スライドセントルの天端検査窓から打設配管が略潜望鏡状に屈曲し、水平方向に回動可能にした打設配管をスライドセントルと防水シートの間に挿入し、前記天端検査窓が設けられた位置の高さまでコンクリートを打設する工程と、コンクリートの打設口を天端吹上げ口に切替えて、該天端吹上げ口からコンクリートを打設する工程とを有することを特徴とする。【選択図】 図1