Central Technological Library of the University of Ljubljana (CTK)
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A realistic fracture system model for engineering analysis of underground excavations
Liu, Qian, geolog ...
This paper presents a novel method for realistically characterizing discontinuity systems for underground excavations. The basic idea is to sample and simulate discontinuities at different scales. A ...combined sampling technique, which consists of axionometric projection and 3D-digital images, makes possible the efficient acquisition of detailed discontinuity data. Minor discontinuities are simulated stochastically based on their representative orientation statistics, with size parameters estimated using analytical methods for circular window sampling. Censored major discontinuities are simulated conditionally using actual intersection locations and true orientations, with discontinuity sizes first assessed using stochastic forward modeling. This method has been applied to the Raabstollen adit, part of an underground mine complex in eastern Styria, Austria.
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