Binder-injecting rockbolt

A rockbolt for installation in a bore in the roof of an underground excavation for supporting a roof, the rockbolt comprising a sleeve and a central member axially disposed and is extending substantially the length of the sleeve thereby defining an annular chamber in the sleeve. The sleeve at its lo...

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Bibliographische Detailangaben
Hauptverfasser:	LANE, WILLIAM L, LEWIS, DONALD L
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS ORMACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS,CLIPS, WEDGES, JOINTS OR JOINTING EARTH DRILLING ENGINEERING ELEMENTS AND UNITS FIXED CONSTRUCTIONS GALLERIES GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LARGE UNDERGROUND CHAMBERS LIGHTING MECHANICAL ENGINEERING MINING SHAFTS THERMAL INSULATION IN GENERAL TUNNELS WEAPONS
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Beschreibung
Zusammenfassung:	A rockbolt for installation in a bore in the roof of an underground excavation for supporting a roof, the rockbolt comprising a sleeve and a central member axially disposed and is extending substantially the length of the sleeve thereby defining an annular chamber in the sleeve. The sleeve at its lower end engages a faceplate which engages the roof. The upper end of the sleeve can be secured in the bore with an anchor, as is well known in the art. Ports in the lower end of the sleeve permit the separate introduction of separate components of a hardenable binder material, which mix as they pass up through the annular chamber. The binder is extruded out through ports in the upper end of the sleeve and travels downward filling the annular space between the sleeve and the bore. The binder hardens securing the central member and the sleeve in the bore.