Simulation of Cascading Pillar Failure in Room-And-Pillar Mines Using Boundary-Element-Method
A "Cascading Pillar Failure" can occur in certain room-and-pillar mines when one pillar in a mine layout fails which transfers its load to neighboring pillars causing them to fail, and so forth. Whether failure occurs in a stable, nonviolent manner or in an unstable violent manner is governed by the local mine stiffness stability criterion. To apply this stability criterion, a boundary-element-method computer program with a strain-softening material model calculates the local mine stiffness and the post-failure pillar stiffness. The behavior of computer simulations changes depending on whether the model satisfies or violates this stability criterion. Example analyses illustrate how the computer program can simulate stable and unstable failures in mines.
R. K. Zipf, "Simulation of Cascading Pillar Failure in Room-And-Pillar Mines Using Boundary-Element-Method," Proceedings of the 2nd North American Rock Mechanics Symposium, American Rock Mechanics Association (ARMA), Jan 1996.
2nd North American Rock Mechanics Symposium
Mining and Nuclear Engineering
Article - Conference proceedings
© 1996 American Rock Mechanics Association (ARMA), All rights reserved.
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