VERFAHREN UND VORRICHTUNG ZUM INSTALLIEREN EINES SLBSTBOHRENDER GEBIRGSANKER

VERFAHREN UND VORRICHTUNG ZUM INSTALLIEREN EINES SLBSTBOHRENDER GEBIRGSANKER

In a method and a device for installing, in a rock wall or roof, a self-drilling expandable rock bolt ( 2 ) having a drill bit portion ( 5 ), an expansion portion ( 9 ) and a connecting portion ( 10 ), in a rock breaking step, the self-drilling rock bolt ( 2 ) is provided with a rock breaking moveme...

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Hauptverfasser: OEBERG, FREDRIK, KANFLOD, MORGAN
Format: Patent
Sprache:ger
Schlagworte:
EARTH DRILLING
FIXED CONSTRUCTIONS
GALLERIES
LARGE UNDERGROUND CHAMBERS
MINING
SHAFTS
TUNNELS
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creator OEBERG, FREDRIK
KANFLOD, MORGAN
description In a method and a device for installing, in a rock wall or roof, a self-drilling expandable rock bolt ( 2 ) having a drill bit portion ( 5 ), an expansion portion ( 9 ) and a connecting portion ( 10 ), in a rock breaking step, the self-drilling rock bolt ( 2 ) is provided with a rock breaking movement and flushing fluid for producing a bore hole, and in an expansion step, pressurized expansion fluid is introduced into the expansion portion ( 9 ) in order to expand it so as to be fixed to the inside of the bore hole. Expansion fluid is introduced by means of a swiveling device ( 6 ) so that the rock bolt ( 2 ) is free to move during the rock breaking step, and be tightened against the rock bolt ( 2 ) in the expansion step in such a way that a sealed channel for expansion fluid is established between an expansion fluid source and the expansion portion ( 9 ). The invention also concerns a self-drilling rock bolt.
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subjects EARTH DRILLING
FIXED CONSTRUCTIONS
GALLERIES
LARGE UNDERGROUND CHAMBERS
MINING
SHAFTS
TUNNELS
title VERFAHREN UND VORRICHTUNG ZUM INSTALLIEREN EINES SLBSTBOHRENDER GEBIRGSANKER
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