Effects of Specimen Radius on the Stress State Near a Roof Bolt Anchor: A Finite Element Determination.
NTIS: PB 221 868 :24 pages
This Bureau of Mines work was performed to theoretically determine the effects of specimen radius and specimen boundary conditions on the stress state in the rock near the anchor for rock specimens used to investigate expansion anchor behavior. Finite element analyses were performed on mathematical models of varying radius and boundary conditions. A review of the results of these analyses revealed a definite convergence of all stress measures considered as the specimen radius increased. There was, however, a significant variation in all stress measures as the specimen diameter increased from 8 to 12 inches.
IH; Report of Investigations
NTIS Accession No.
NTIS: PB 221 868