TY - GEN
T1 - The impact of abutment relaxation on stability of underground mine openings
AU - Diederichs, Mark S.
AU - Kaiser, Peter K.
AU - Suorineni, Fidelius
PY - 2000/1/1
Y1 - 2000/1/1
N2 - In contrast to· typical excavations in civil engineering construction, mine openings often create locally reduced c<;mfmement and relaxation or tension in the backs or walls. Boundary-parallel stress reduction, or relaxation, can have devastating consequences in structurally dominant ground or in situations where the ground has been previously damaged by high stress. Such relaxation is often neglected in limit equilibrium calculations and in empirical design techniques. The stability of hangingwalls in open stopes is of particular concern with respect to the detrimental impact of relaxation on both rockmass stability and the capacity of standard cablebolt reinforcement systems. The voussoir analogue for jointed beam stability is used to investigate the impact of stress reduction parallel to the back and walls of underground mine stopes and to provide an relaxation adjustment factor for the empirical "Stability Graph", a technique for design of open stope dimensions and support.
AB - In contrast to· typical excavations in civil engineering construction, mine openings often create locally reduced c<;mfmement and relaxation or tension in the backs or walls. Boundary-parallel stress reduction, or relaxation, can have devastating consequences in structurally dominant ground or in situations where the ground has been previously damaged by high stress. Such relaxation is often neglected in limit equilibrium calculations and in empirical design techniques. The stability of hangingwalls in open stopes is of particular concern with respect to the detrimental impact of relaxation on both rockmass stability and the capacity of standard cablebolt reinforcement systems. The voussoir analogue for jointed beam stability is used to investigate the impact of stress reduction parallel to the back and walls of underground mine stopes and to provide an relaxation adjustment factor for the empirical "Stability Graph", a technique for design of open stope dimensions and support.
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M3 - Conference contribution
AN - SCOPUS:85054555839
SN - 9058091554
SN - 9789058091550
T3 - 4th North American Rock Mechanics Symposium, NARMS 2000
SP - 481
EP - 488
BT - 4th North American Rock Mechanics Symposium, NARMS 2000
PB - American Rock Mechanics Association (ARMA)
T2 - 4th North American Rock Mechanics Symposium, NARMS 2000
Y2 - 31 July 2000 through 3 August 2000
ER -