Some aspects on model uncertainty in the calculation of block stability using Kinematics Limit Equilibrium
2008 (English)In: 42nd U.S. Rock Mechanics - 2nd U.S.-Canada Rock Mechanics Symposium, American Rock Mechanics Association , 2008Conference paper (Refereed)
Kinematics Limit Equilibrium (KLE) is one of the most commonly used approaches for evaluating block stability around underground openings. Model uncertainty in using (probabilistic) KLE has been assessed by comparing block stability results with the results of the Discrete Fracture Network-Distinct Element Method (DFN-DEM) approach. The KLE analysis has been performed based on Monte Carlo random generation for fracture orientations and lengths (probabilistic KLE). The results show that the probabilistic KLE underestimates the unstable block volume. The calculated mean value of unstable block volumes using probabilistic KLE is much smaller than DFN-DEM simulation results, which provide a closer representation of reality.
Place, publisher, year, edition, pages
American Rock Mechanics Association , 2008.
DEM Simulation, Discrete fracture network, Distinct element methods, Fracture orientations, Limit equilibrium, Mean values, Model uncertainties, MONTE CARLO, Random generation, Stability results, Underground opening
IdentifiersURN: urn:nbn:se:kth:diva-25094ScopusID: 2-s2.0-69549129644OAI: oai:DiVA.org:kth-25094DiVA: diva2:355745
42nd U.S. Rock Mechanics - 2nd U.S.-Canada Rock Mechanics Symposium 2008; San Francisco, CA; 29 June 2008 through 2 July 2008
QC 201010082010-10-082010-10-082012-03-22Bibliographically approved