TY - JOUR
T1 - Joint surface matching and shear strength. Part B
T2 - JRC-JMC shear strength criterion
AU - Zhao, J.
PY - 1997/2/1
Y1 - 1997/2/1
N2 - The JRC-JCS model tends to overpredict the shear strength for those natural joints with less matched surfaces. To overcome this shortcoming, a new JRC-JMC shear strength criterion is proposed in order to include the effects of both joint surface roughness and joint matching, in the form of τ = σn.tan[JRC.JMC.log10 (JCS/σn) + φr]. The JMC should be set at 0.3 for any measured JMC <0.3. It is a modification of the existing JRC-JCS criterion. The new JRC-JMC model provides appropriate fitting of the shear test results on various joints with different degrees of surface, roughness and matching, and gives a better interpretation and prediction, particularly for natural joints that do not have perfectly matched surfaces.
AB - The JRC-JCS model tends to overpredict the shear strength for those natural joints with less matched surfaces. To overcome this shortcoming, a new JRC-JMC shear strength criterion is proposed in order to include the effects of both joint surface roughness and joint matching, in the form of τ = σn.tan[JRC.JMC.log10 (JCS/σn) + φr]. The JMC should be set at 0.3 for any measured JMC <0.3. It is a modification of the existing JRC-JCS criterion. The new JRC-JMC model provides appropriate fitting of the shear test results on various joints with different degrees of surface, roughness and matching, and gives a better interpretation and prediction, particularly for natural joints that do not have perfectly matched surfaces.
UR - http://www.scopus.com/inward/record.url?scp=0031079862&partnerID=8YFLogxK
U2 - 10.1016/S0148-9062(96)00063-0
DO - 10.1016/S0148-9062(96)00063-0
M3 - Article
AN - SCOPUS:0031079862
SN - 1365-1609
VL - 34
SP - 179
EP - 185
JO - International Journal of Rock Mechanics and Mining Sciences
JF - International Journal of Rock Mechanics and Mining Sciences
IS - 2
ER -