EXCAVATOR USED FOR SHIELD METHOD OR PROPULSION METHOD

PROBLEM TO BE SOLVED: To sufficiently reduce frictional force generated between a skin plate and an inner wall surface, by injecting a skid material over the whole periphery of the skin plate between the skin plate and the inner wall surface of a drilling hole.SOLUTION: A shield machine 10 is used i...

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Hauptverfasser: TSUCHIYA KOSABURO, NOGUCHI KOJI
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:PROBLEM TO BE SOLVED: To sufficiently reduce frictional force generated between a skin plate and an inner wall surface, by injecting a skid material over the whole periphery of the skin plate between the skin plate and the inner wall surface of a drilling hole.SOLUTION: A shield machine 10 is used in a shield method or a propulsion method, and comprises a cylindrical skin plate 4 and a cutter device 2 rotatably provided on the tip of the skin pate 4, and bores the natural ground inside by the cutter device 2, and comprises opening parts 22 and 31 for injecting a skid material W backward between the skin plate 4 and an inner wall surface H of a drilling hole into an outer peripheral part of the cutter device 2 and a part of turning to the rear side of an outer part of the skin plate 4.SELECTED DRAWING: Figure 1 【課題】スキンプレートと掘削孔の内壁面との間におけるスキンプレートの全周に亘って滑材を注入し、これらスキンプレートと内壁面との間に生じる摩擦力を十分に低減可能とする。【解決手段】シールド工法又は推進工法において用いられ、円筒状のスキンプレート4と、当該スキンプレート4の先端に回転自在に設けられたカッター装置2とを有して、カッター装置2により地山内を掘進するシールド機10であって、カッター装置2の外周部分で且つスキンプレート4よりも外方側の部位の後方側に向いた部位に、スキンプレート4と掘削孔の内壁面Hとの間に対して、後方に向けて滑材Wを注入するための開口部22,31を備えるようにした。【選択図】図1