1990
DOI: 10.1016/0148-9062(90)95339-3
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Pillar design for mines in saltrock - 1

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“…These test were performed under constant stress rates of 7.6 MPa/min for 30.2 MPa /min for the isotropie phase and between 15.1 and 30.2 MPa/min for the deviatoric phase. On the other hand, Hambley et al (1989) have a proposed a combined failure criterion which, in its linear part, is the extended Mohr-Culomb criterion. Strain rates for these tests range between 10~3 and 10~5 s~~ , much faster than those to be expected under natural conditions.…”
Section: Failurementioning
confidence: 99%
“…These test were performed under constant stress rates of 7.6 MPa/min for 30.2 MPa /min for the isotropie phase and between 15.1 and 30.2 MPa/min for the deviatoric phase. On the other hand, Hambley et al (1989) have a proposed a combined failure criterion which, in its linear part, is the extended Mohr-Culomb criterion. Strain rates for these tests range between 10~3 and 10~5 s~~ , much faster than those to be expected under natural conditions.…”
Section: Failurementioning
confidence: 99%