Timbering of branching mine galleries

1. The timbering of branching mine galleries consists of the carrying framework, arced elements fixed to the framework by means of cross-shaped articulated joints, longitudinal stretcher bars fixed to arced elements and joining components. Characterized in that: The connector (4) fitted into the ope...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	KALDONEK PAWEL, DREWNIAK ADOLF, RYMER ANDRZEJ, SOSNICA JOACHIM, ZAJKOWSKI KRZYSZTOF, TREMBACZEWSKI HENRYK
Format:	Patent
Sprache:	eng
Schlagworte:	EARTH DRILLING FIXED CONSTRUCTIONS GALLERIES LARGE UNDERGROUND CHAMBERS MINING SHAFTS TUNNELS
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