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Mr. Carlos Contreras Inga
Colorado School of Mines

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Research Keywords & Expertise

0 Geomechanics
0 Geotechnical Engineering
0 Numerical Modeling
0 Rock Mechanics
0 Underground Mining

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Short Biography

Carlos is a geological engineer interested in rock mechanics and numerical modeling.

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Journal article
Published: 14 July 2021 in Sustainability
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The ability to predict the mechanical behavior of brittle rocks using bonded block models (BBM) depends on the accuracy of the geometrical representation of the grain-structure and the applied micro-properties. This paper evaluates the capabilities of BBMs for predictive purposes using an approach that employs published micro-properties in combination with a Voronoi BBM that properly approximates the real rock grain-structure. The Wausau granite, with Unconfined Compressive Strength (UCS) of 226 MPa and average grain diameter of 2 mm, is used to evaluate the effectiveness of the predictive approach. Four published sets of micro-properties calibrated for granites with similar mineralogy to the Wausau granite are used for the assessment. The effect of grain-structure representation in Voronoi BBMs is analyzed, considering grain shape, grain size and mineral arrangement. A unique contribution of this work is the explicit consideration of the effect of stochastic grain-structure generation on the obtained results. The study results show that the macro-properties of a rock can be closely replicated using the proposed approach. When using this approach, the micro-properties have a greater impact on the realism of the predictions than the specific grain-structure representation. The grain shape and grain size representations have a minor effect on the predictions for cases that do not deviate substantially from the real average grain geometry. However, the stochastic effect introduced by the use of randomly-generated Voronoi grain-structures can be significant, and this effect should be considered in future studies.

ACS Style

Carlos Contreras Inga; Gabriel Walton; Elizabeth Holley. Statistical Assessment of the Effects of Grain-Structure Representation and Micro-Properties on the Behavior of Bonded Block Models for Brittle Rock Damage Prediction. Sustainability 2021, 13, 7889 .

AMA Style

Carlos Contreras Inga, Gabriel Walton, Elizabeth Holley. Statistical Assessment of the Effects of Grain-Structure Representation and Micro-Properties on the Behavior of Bonded Block Models for Brittle Rock Damage Prediction. Sustainability. 2021; 13 (14):7889.

Chicago/Turabian Style

Carlos Contreras Inga; Gabriel Walton; Elizabeth Holley. 2021. "Statistical Assessment of the Effects of Grain-Structure Representation and Micro-Properties on the Behavior of Bonded Block Models for Brittle Rock Damage Prediction." Sustainability 13, no. 14: 7889.