Expandable rock bolt and rock bolting system

摘要

The present invention is related to a rock bolt ( 7 ), expandable by means of a pressure media, for insertion into a borehole. The expandable bolt ( 7 ) comprises a connection unit ( 8 ) with means ( 11 ) for detachable interaction with an expansion means ( 10 ) for expansion of the rock bolt ( 7 ), as well as with a suspension element ( 16 ). The connection unit is designed with such external dimensions so that it may be inserted into the bore-hole. The invention also relates to such a rock bolting system.