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TitleCalibration of the three-dimensional block-spring model for analyzing large displacement in jointed rocks
AuthorLi, G G
SourceAmerican Rock Mechanics Association - 40th US Rock Mechanics Symposium, ALASKA ROCKS 2005: Rock Mechanics for Energy, Mineral and Infrastructure Development in the Northern Regions; 2005.
PublisherAmerican Rock Mechanics Association (ARMA)
Released2005 01 01
A three-dimensional block-spring model and a computer code BSM3D have been developed for simulating the behavior of jointed rocks. Joints and discontinuities in rock masses are interpreted as interfaces between blocks. Large displacements are modeled by using an iterative procedure, in which the contact stiffness and forces vary according to contact modes governed by the Mohr-Coulomb failure criterion. Calibration of the discrete model is carried out following a benchmarking procedure: verify the formulation and program using analytical solutions; compare the results with those from referred commercial software; and, examine the displacements using in situ measurements. The calibration results have shown that BSM3D is correct and reliable for most of the problems involved in jointed rocks, though some limitations may apply. It can be used as a practical tool in the planning of mine excavations and slope stability analyses.

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