Post on 17-Dec-2015
ObjectiveObjective
To test the capability of FRACODTo test the capability of FRACOD2D2D in in predicting failure of a pillar between two rock predicting failure of a pillar between two rock excavationsexcavations
Main parametersMain parameters
Failure criterion: Mohr-Coulomb Failure criterion: Mohr-Coulomb Tensile strength = 9MPa Tensile strength = 9MPa Cohesion=17MPaCohesion=17MPa Friction angle rock Friction angle rock =30º =30º KKICIC=1.46 MPa m=1.46 MPa m1/21/2; K; KIICIIC=6.53 K=6.53 KICIC
E=40GPa, E=40GPa, =0.25=0.25 Fracture contact properties: JKs=JKn=10e4GPa/m; Fracture contact properties: JKs=JKn=10e4GPa/m;
friction angle=30 degrees, cohesion=0friction angle=30 degrees, cohesion=0
Pillar width
10 m
Excavation width 10 m
Excavation width 10 m
20 m
SSyy=43MPa=43MPa
SSXX=18 MPa=18 MPa