High-strength anchor system, safe room bulkhead, and method...

Details High-strength anchor system, safe room bulkhead, and method... High-strength anchor system, safe room bulkhead, and method...

E - Fixed Constructions

21

D

E21D 11/15 (2006.01) E21D 21/00 (2006.01) E21F 11/00 (2006.01)

Patent

CA 2741272

A high-strength anchor system for anchoring a support to mine strata is disclosed. The system includes an anchor plate and a connecting member on the anchor plate for connection of the support to the anchor plate. Anchor bolts extend through bolt holes in the anchor plate into bore holes in the mine strata. Load-spreading devices extend from respective bolt holes in the anchor plate into the bore holes. The load-spreading devices have outside diameters larger than outside diameters of the anchor bolts for spreading shear loads exerted on the anchor bolts over larger areas of the mine strata. A method of installing such a system and a safe room bulkhead using such a system are also disclosed.

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