Simulation of Pillar Simulation of Pillar Failure Failure Using Using FRACOD FRACOD 2D 2D
Dec 17, 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