SHOTCRETE CAPTURE MEMBER FOR TUNNEL CONSTRUCTION

To quickly integrate a ground excavation surface and an arch support during tunnel construction.SOLUTION: A shotcrete capture member 10 is provided in a gap 5 between an earth excavation surface 2a of a tunnel 1 and an outer peripheral surface 3a of an arch support 3. A capture body 11 of the shotcr...

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Main Authors SAITO KENGO, YOSHIKAWA KAZUO, OGIBATA KUNIHITO, HOSODA YUSUKE, FUJII KENGO, NAGAI KENSAKU, HAYAKAWA KENJI, CHIBA YOHEI
Format Patent
LanguageEnglish
Japanese
Published 07.02.2024
Subjects
EARTH DRILLING
FIXED CONSTRUCTIONS
GALLERIES
LARGE UNDERGROUND CHAMBERS
MINING
SHAFTS
TUNNELS
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Summary:To quickly integrate a ground excavation surface and an arch support during tunnel construction.SOLUTION: A shotcrete capture member 10 is provided in a gap 5 between an earth excavation surface 2a of a tunnel 1 and an outer peripheral surface 3a of an arch support 3. A capture body 11 of the shotcrete capture member 10 is composed of linear members 11a distributed in the circumferential direction along the outer peripheral surface 3a of the arch support 3 and in the radial direction perpendicular to the outer peripheral surface 3a, and prevents concrete 2A from passing through during spraying.SELECTED DRAWING: Figure 4 【課題】トンネル構築の際に地山掘削面とアーチ支保工とを早期に一体化させる。【解決手段】トンネル１の地山掘削面２ａとアーチ支保工３の外周面３ａとの間の空隙５に吹付コンクリート捕捉部材１０を設ける。吹付コンクリート捕捉部材１０の捕捉体１１は、アーチ支保工３の外周面３ａに沿う周方向及び外周面３ａと直交する径方向に分布する線状材１１ａからなり、吹付中のコンクリート２Ａの通り抜けを妨げる。【選択図】図４
Bibliography:Application Number: JP20220118634