Resin-anchored bolt with indentations
OwnerJames L. Earl, JR., Stephen C. Tadoliniinventors
Life of this patent
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Abstract
A strata support system that provides support and balance to a rock mass and reacts to movement of the rock mass. The strata support system includes a borehole that is drilled into a surface of the rock mass. A resin is disposed in the borehole to secure a cable within the borehole. An anchor cable bolt assembly having a plurality of strands that are twisted together to form the cable is inserted into the borehole. At least one of the plurality of strands includes an interrupted outer surface that is defined by a plurality of spaced indentations. The plurality of spaced indentations are formed along the length of the strand and provide for a plurality of surface contours to enhance engagement of the anchor cable bolt with the resin.
Claims29
An anchor cable bolt assembly for providing support and balance to a rock mass and reacting to movement of the rock mass comprising:
- a plurality of strands twisted together to faun a cable, at least one of said plurality of strands having an interrupted outer surface defined by a plurality of spaced indentations formed along a length of said at least one strand, and wherein said plurality of spaced indentations provide for a plurality of surface contours for engagement with a resin.
The anchor cable bolt assembly as set forth in claim l further including a fixture secured to an end of said cable for tensioning said cable relative to the rock mass.
A strata support system for providing support and balance to a rock mass and reacting to movement of the rock mass comprising:
- a borehole having a bore diameter and being drilled into a rock mass surface;
- a plurality of strands, with each of said plurality of strands having a length and being twisted together to form a cable having a cable diameter and capable of being inserted into said borehole;
- and
- a resin disposed in said borehole for securing said cable within said borehole;
- wherein at least one of said plurality of strands includes an interrupted outer surface defined by a plurality of spaced indentations formed along the length of said at least one strand for providing a plurality of surface contours to engage with said resin.
A method of forming a strata support system for providing support and balance to a rock mass and reacting to movement of the rock mass, comprising the steps of:
- forming an interrupted outer surface on at least one of a plurality of strands;
- twisting together the plurality of strands to form a cable;
- drilling a borehole into a surface of a rock mass for receiving the cable;
- disposing a resin in the borehole for securing the cable within the borehole;
- and
- inserting the cable into the borehole;
- wherein the plurality of indentations provide for a plurality of surface contours for engagement with the resin.
Dependencies are inferred from the claim text.