EXPANDABLE INJECTION BOLT AND GROUTING METHOD USING SAME

An expandable injection bolt (1A) comprising an expandable section (3), which has a tubular shape capable of applying an internal pressure form a rear end portion and expands in a radial direction when the internal pressure is applied, and an injection port forming section (9A) which opens an inject...

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Bibliographic Details
Main Authors HIRANO, KENKICHI, AWA, HIROSHI
Format Patent
LanguageEnglish
French
Published 11.08.2005
Edition7
Subjects
EARTH DRILLING
EMBANKMENTS
EXCAVATIONS
FIXED CONSTRUCTIONS
FOUNDATIONS
GALLERIES
HYDRAULIC ENGINEERING
LARGE UNDERGROUND CHAMBERS
MINING
SHAFTS
SOIL SHIFTING
TUNNELS
UNDERGROUND OR UNDERWATER STRUCTURES
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Summary:An expandable injection bolt (1A) comprising an expandable section (3), which has a tubular shape capable of applying an internal pressure form a rear end portion and expands in a radial direction when the internal pressure is applied, and an injection port forming section (9A) which opens an injection port (7) when the internal pressure is applied, wherein the expandable section (3) is expanded by the internal pressure so as to tightly adhere to ground, then the injection port forming section (9A) is caused to open the injection port (7), and a grout can be injected into the ground through the injection port (7) to reinforce the ground. Un boulon d'injection expansible (1A) comprenant une section expansible (3), qui présente une forme tubulaire capable d'appliquer une pression interne forme une portion arrière d'extrémité et qui s'étend dans une direction radiale quand la pression interne est appliquée et une section (9A) formant un orifice d'injection qui ouvre un orifice d'injection (7) quand la pression interne est appliquée, la section expansible (3) s'étendant sous la pression interne pour adhérer fortement au sol, ensuite, la section (9A) formant un orifice d'injection (9A) est amenée à ouvrir l'orifice d'injection (7), et pour renforcer le sol, un coulis de ciment peut être injecté dans le sol par l'orifice d'injection (7).
Bibliography:Application Number: WO2005JP01305