Abstract
The authors attempt the numerical modeling of the geomechanical behavior of rock mass in the course of single unit face longwall mining. The calculation models are constructed for the rock mass geomechanics from ground surface down to mining depth. The model problems are solved in two and in three dimensions. The resultant characteristics of a trough subsidence on ground surface were compared with the data of engineering analysis. The modeling results are verified using actual in-situ observations of check point subsidence. The comparative analysis of the trough subsidence characteristics on ground surface from the geomechanical modeling and engineering analysis show their correlation in case of all test alternatives.
REFERENCES
Zhuravkov, M.A., Sovremennye chislennye metody v mekhanike (Advanced Numerical Methods in Mechanics), Minsk: BGU, 2022.
Li Sh, Zhao Mh, Wang Yn, and Wang Jg., A Continuum-Based Discrete Element Method for Continuous Deformation and Failure Process, Comput. Mech., WCCM VI in Conjunction with APCOM’04, Tsinghua University Press & Springer-Verlag, Beijing, China, 2004.
Ariffin, A.K., Huzni, S., Nor, M.J.M., and Mohamed Nan, Hybrid Finite-Discrete Element Simulation of Crack Propagation under Mixed Mode Loading Condition, Comput. Meth. Appl. Mech. Eng., 2006, vol. 195, pp. 4579–4593.
Morris, J.P., Rubin, M.B., Block, G.I., and Bonner, M.P., Simulations of Fracture and Fragmentation of Geologic Materials Using Combined FEM/DEM Analysis, Int. J. Impact Eng., 2006, vol. 33, pp. 463–473.
Karami, A. and Stead, D., Asperity Degradation and Damage in the Direct Shear Test: A Hybrid FEM/DEM Approach, Rock Mech. Rock Eng., 2008, vol. 41, pp. 229–266.
Kocharyan, G.G. and Kulyukin, A.M., Study of Caving Features for Underground Workings in a Rock Mass of a Block Structure with Dynamic Action. Part II: Mechanical Properties of Interblock Gaps, Journal of Mining Science, 1994, vol. 30, no. 5, pp. 437–446.
Klishin, S.V. and Revuzhenko, A.F., Numerical Analysis of Plastic Behavior of Granular Media Exposed to Deformation under Broken Path Loading, Journal of Mining Science, 2015 vol. 51, no. 5, pp. 951–956.
Chanyshev, A.I. and Efimenko, L.L., Mathematical Models of Block Media in Problems of Geomechanics. Part I: Deformation of Stratified Medium, Journal of Mining Science, 2003, vo. 39, no. 3, pp. 271–280.
Aleksandrova, N.N., Pendulum Waves on the Surface of Block Rock Mass under Dynamic Impact, Journal of Mining Science, 2017, vol. 53, no. 1, pp. 59–64.
Zhurkina, D.S., Klishin, S.V., Lavrikov, S.V., and Leonov, M.G., DEM-Based Modeling of Shear Localization and Transition of Geomedium to Unstable Deformation, Journal of Mining Science, 2022, vol. 58, no. 3, pp. 357–365.
Lavrikov, S.V. and Revuzhenko, A.F., Mathematical Modeling of Unstable Deformation in Rock Mass with Regard to Self-Balancing Stresses, Journal of Mining Science, 2020, vol. 56, no. 6, pp. 887–902.
Chanyshev, A.I. and Abdulin, I.M., New Formulations of Geomechanical Problems with Regard to Post-Limit Deformation of Rocks, Journal of Mining Science, 2022, vol. 58, no. 5, pp. 705–719.
Viktorov, S.D., Iofis, M.A., and Goncharov, S.A., Sdvizhenie i razrushenie gornykh porod (Displacement and Fracture of Rocks), Moscow: Nauka, 2005.
Baklashov, I.V., Geomekhanika. Tom 1. Osnovy geomekhaniki (Geomechanics. Vol. 1. Fundamentals of Geomechanics), Moscow: NGTU, 2004.
Pravila okhrany zdanii, sooruzhenii i prirodnykh ob’ektov ot vrednogo vliyaniya podzemnykh gornykh razrabotok na Starobinskom mestorozhdenii kaliynykh solei. MKS 73, 13.020.30 (Regulations for Protection of Buildings, Structure and Natural Bodies from Underground Mining Impact at the Starobinsk Potash Salt Deposit. MKS 73, 13.020.30), Minsk: Belneftekhim, 2014.
Ivlev, D.D., Maksimova, L.A., Nepershin, R.I., Radaev, Yu.N., Senashov, S.I., and Shemyakin, E.I., Predel’noe sostoyanie deformirovannykh tel i gornykh porod (Limit Condition of Deformed Bodies and Rocks), Moscow: Fizmatlit, 2008.
Zhuravkov, M.A and Starovoitov, E.I., Matematicheskie modeli mekhaniki tverdykh tel (Mathematical Models of Solid Mechanics), Minsk: BGU, 2021.
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Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, 2023, No. 3, pp. 3-12. https://doi.org/10.15372/FTPRPI20230301.
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Zhuravkov, M.A., Nikolaichik, M.A. & Klimkovich, N.M. Modified FEM Algorithm with Introduced Elastic Blocks for Geomechanical Modeling of Undermined Rock Mass. J Min Sci 59, 349–357 (2023). https://doi.org/10.1134/S1062739123030018
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DOI: https://doi.org/10.1134/S1062739123030018