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Evaluation of scale and loading direction effects on strength and deformability of jointed rock mass: case study of Tazareh coal mine, Iran | ||
| International Journal of Mining and Geo-Engineering | ||
| مقاله 1، دوره 56، شماره 2، شهریور 2022، صفحه 89-95 اصل مقاله (1.03 M) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22059/ijmge.2020.298101.594844 | ||
| نویسندگان | ||
| Masoud Mazraehli* 1؛ Milad Arabameri1؛ Hossein Mirzaei Nasirabad2 | ||
| 1Faculty of Mining, Petroleum and Geophysics Engineering, Shahrood University of Technology, Shahrood, Iran | ||
| 2Faculty of Mining Engineering, Sahand University of Technology, Tabriz, Iran | ||
| چکیده | ||
| Determining strength and deformation of jointed rock masses is an inevitable part of geomechanical projects. Strength and deformability of a rock mass with stochastic joint sets is conceivably anisotropic and is mainly controlled by joints mechanical and geometrical properties. In this paper, strength and deformation behavior of jointed rock masses has been evaluated at Tazareh coal mine, Iran. Field mappings through scanline method have been used to collect joints spatial features on rock surfaces. A statistical evaluation has been carried out on field data using Dips software. Then, geomechanical properties of intact blocks have been measured conducting uniaxial compressive strength test. Finally, the rock mass is modelled using 3DEC, and its behavior is analyzed in some cases with different loading directions and block sizes to obtain representative elementary volume (REV) based on strength and deformation, respectively. | ||
| کلیدواژهها | ||
| DEM؛ DFN؛ Experimental study؛ Numerical modeling؛ Jointed rock behavior | ||
| مراجع | ||
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[1] Hoek, E. & Brown, E. T. (1997). Practical estimates of rock mass strength. International Journal of Rock Mechanics and Mining Sciences. 34(8), 1165-1186.
[2] Salamon, M. D. G. (1968). Elastic Moduli of a Stratified Rock Mass. International Journal of Rock Mechanics and Mining Sciences. 5,519-527.
[3] Singh, B. (1973). Continuum Characterization of Jointed Rock Masses. International Journal of Rock Mechanics and Mining Science and Geomechanics Abstract. 10,311-335.
[4] Morland, L. (1976). Elastic anisotropy of regularly jointed media. Rock Mechanics. 8,35-48.
[5] Amadei, B. & Goodman, R. E. (1981). A 3-D Constitutive Relation for Fractured Rock Masses. Proceedings of International Symposium on the Mechanical Behavior of Structured Media, Ottawa, pp. 249-268.
[6] Gerrard, C. M. (1982). Equivalent Elastic Moduli of a Rock Mass Consisting of Orthorhombic Layers. International Journal of Rock Mechanics and Mining Science and Geomechanics Abstract, 19, 9-14.
[7] Fossum, A. F. (1985). Effective Elastic Properties for a Randomly Jointed Rock Mass. International Journal of Rock Mechanics and Mining Sciences, 22(6), 467-470.
[8] Zhang, L. (2010). Method for Estimating the Deformability of Heavily Jointed Rock Masses. Journal of Geotechnical and Geoenvironmental Engineering, 136(9), 1242-1250.
[9] Yang, J. P., Chen, W. Z., Dai, Y. H., & Yu, H. D. (2014). Numerical determination of elastic compliance tensor of fractured rock masses by finite element modeling. International Journal of Rock Mechanics and Mining Sciences, 70, 474-482.
[10] Priest, S. D. (1993). Discontinuity analysis for rock engineering. Springer.
[11] Christianson, M.C., & Board, M. P. (2006). UDEC Simulation of triaxial testing of lithophysal tuff. Proceedings of the 41st U.S. Symposium on Rock Mechanics (USRMS) and 50th Anniversary of the U.S. Rock Mechanics Association, pp. 968.
[12] Kulatilake, P., Wang, S., & Stephansson, O. (1993). Effect of finite size joints on the deformability of jointed rock on three dimensions. International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts. 30(5), 479-501.
[13] Noorian Bidgoli, M., Zhao, Z., & Jing, L. (2013). Numerical evaluation of strength and deformability of fractured rocks. Journal of Rock Mechanics and Geotechnical Engineering, 5, 419-430.
[14] Min, K. B., & Jing, L. (2003). Numerical determination of the equivalent elastic compliance tensor for fractured rock masses using the distinct element method. International Journal of Rock Mechanics & Mining Sciences. 40, 795-816.
[15] Baghbanan, A. (2008). Scale and stress effects on hydro-mechanical properties of fractured rock masses. Ph.D. Thesis, KTH Royal University.
[16] Wu, Q., & Kulatilake, P. (2012). REV and its properties on fracture system and mechanical properties, and an orthotropic constitutive model for a jointed rock mass in a dam site in China. Computers and Geotechnics, 43, 124-142.
[17] JianPing, Y., WeiZhong, C., DianSen, Y., & JingQiang, Y. (2015). Numerical determination of strength and deformability of fractured rock mass by FEM modeling. Computers and Geotechnics, 64, 20-31.
[18] Alshkane, Y. M., Marshall, A. M., & Stace, L. R. (2017). Prediction of strength and deformability of an onterlocked blocky rock mass using UDEC. Journal of Rock Mechanics & Geotechnical Engineering, 9, 531-542.
[19] Laghaei, M., Baghbanan, A., Hashemolhosseini, H., & Dehghanipoodeh, M. (2018). Numerical determination of deformability and strength of 3D fractured rock mass. International Journal of Rock Mechanics & Mining Sciences, 110, 246-256.
[20] Supervising office (2009). Apprenticing report of Tazareh coal mine. Eastern Alborz Coal Company, Shahrood, Iran.
[21] Tatar, A., Alipour Asll, M. (2019). Geochemistry of major, trace, and rare earth elements in coals from the Tazareh mine, Eastern Alborz Coalfield, NE Iran. Geochemistry: Exploration, Environment, Analysis.
[22] Alejano, L. R., Arzua, J., Bozorgzadeh, N., & Harrison, J. P. (2017). Triaxial strength and deformability of intact and increasingly jointed granite samples. International Journal of Rock Mechanics & Mining Sciences, 95, 87-103.
[23] Khani, A., Baghbanan, A., & Hashemolhosseini, H. (2013). Numerical investigation of the effect of fracture intensity on deformability and REV of fractured rock masses. International Journal of Rock Mechanics and Mining Sciences, 63, 104-112.
[24] International Society for Rock Mechanics., Commission on Standardization of Laboratory and Field Tests. Committee on Laboratory Tests (1978). Suggested methods for determining the uniaxial compressive strength and deformability of rock materials. | ||
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