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Simulation of Pillar Failure Using FRACOD 2D. Objective To test the capability of FRACOD 2D in predicting failure of a pillar between two rock excavations. Main parameters Failure criterion: Mohr-Coulomb Tensile strength = 9MPa Cohesion=17MPa Friction angle rock =30º
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Simulation of Pillar Failure Using FRACOD2D
Objective • To test the capability of FRACOD2D in predicting failure of a pillar between two rock excavations
Main parameters • Failure criterion: Mohr-Coulomb • Tensile strength = 9MPa • Cohesion=17MPa • Friction angle rock =30º • KIC=1.46 MPa m1/2; KIIC=6.53 KIC • E=40GPa, u=0.25 • Fracture contact properties: JKs=JKn=10e4GPa/m; friction angle=30 degrees, cohesion=0
Sy=43MPa SX=18 MPa Pillar width 10 m Excavation width 10 m Excavation width 10 m 20 m