Macro-mechanical properties of columnar jointed basaltic rock masses |
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Authors: | Sheng-jie Di Wei-ya Xu Yu Ning Wei Wang and Guan-ye Wu |
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Affiliation: | (1) Department of Civil Engineering, Faculty of Technology (FoT), University of Delhi, Delhi College of Engineering Campus, Bawana Road, House No. 8, Type V, Delhi, 110042, India;(2) Delhi College of Engineering, Faculty of Technology (FoT), University of Delhi, House No. 8, Type V, Delhi College of Engineering, Bawana Road, Delhi, 110042, India |
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Abstract: | From the geological structure of the columnar jointed rock mass, a visual model was established in software AUTOCAD by programming
based on the algorithm of the Voronoi diagram. Furthermore, a program to convert the AUTOCAD model into 3DEC (3-dimensional
distinct element code) model was developed, and a numerical model was established in 3DEC. Moreover, the results of triaxial
compression tests of columnar jointed rock masses were simulated numerically. The REV (representative element volume) scale
was studied, and the result shows that the REV size is 3 m × 3 m. The proposed approach, the established model and the numerical
simulation were applied to study the macro-mechanical properties and the equivalent strength parameters of the columnar jointed
rock mass. The numerical simulation results are in good accordance with the in-situ test results. |
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Keywords: | columnar joint Voronoi diagram three-dimensional distinct element code representative element volume mechanicalparameters |
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