Bore injection anchor, for tunneling applications, has raised projections and/or recesses in its outer mantle

摘要

The bore injection anchor has raised projections and/or recesses (a,b,c) formed in its outer mantle, a central rinsing channel and a thread for reception of a drilling device or a nut for fixing to an anchor plate. The raised projections and/or recesses are obtained via a pressing operation and have a circular or elliptical cross-section.