Paper borehole plug

摘要

A borehole plug simple to manipulate for the sealing of boreholes intended for grouting, in particular in underground mining and tunnelling, consists of a basic body and discs arranged and secured close behind one another on the basic body. These discs are pre-bent in the direction of the tip of the basic body and have the shape of a frisbee disc so that, when the borehole plug is pulled back in the borehole, they are automatically braced against the borehole wall and thus effectively seal this area. <IMAGE>