Abstract
The process of roof caving at face during its advance is impossible to describe by static and kinematic solutions. It is necessary to take into account unsymmetry of deformation due to the dynamic component of the roof caving process. To that end, it is required to undertake experimental and theoretical studies into the unsymmetrical displacement distribution. It seems to be possible to obtain additional information on deformation and caving of roof rocks from the elastic solution. The main factors to ensure correct formulation of problems are the statics, kinematics and dynamics of rock mass deformation, and the proposed description of the inelasticity zone in the host rocks-mineable seam system.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Mirenkov, V.E., Ill-Posed Problems of Geomechanics, J. Min. Sci., 2018, vol. 54, no. 3, pp. 361–367.
Kurlenya, M.V. and Mirenkov, V.E., Phenomenological Model of Rock Deformation around Mine Workings, J. Min. Sci., 2018, vol. 54, no. 2, pp. 181–186.
Carranza-Torres, C., Rysdahe, B., and Vasim, M., On the Elastic Analysis of a Circular Lined Tunnel Considering the Delayed Installation of the Support, J. Rock Mech. and Min. Sci, 2013, vol. 61, pp. 57–85.
Rezali, M., Hossaini, M.F., and Majdi, A., Determination of Longwall Mining-Induced Stress Using the Strain Energy Method, J. Rock Mech. and Rock Eng, 2015, vol. 48, pp. 2421–2433.
Badrul Alam, A.K.M., Masaki Niioka Fujii, Daisuke Fukuda, and Jun-ichi Kodama, Effect of Confining Pressure on the Permeability of Three Rock Types under Compression, J. Rock Mech. and Min. Sci, 2014, vol. 65, pp. 49–61.
Wei Wang, Yuan-ping Cheng, Hai-feng Wang, Hong-yong Liu, Liang Wang, Weili, and Jing-yu Jiang, Fracture Failure Analysis of Hard-Thick Sandstone and Its Controlling Effect on Gas Emission in Underground Ultra-Thick Coal Extraction, J. Eng. Failure Analysis, 2015, vol. 54, pp. 150–162.
Klishin, V.I., Fryanov, V.N., Pavlova, L.D., and Opruk, G.Yu., Modeling Top Coal Disintegration in Thick Seam in Longwall Top Coal Caving, J. Min. Sci., 2019, vol. 55, no. 2, pp. 247–256.
Basarir, H., Oge, I.F., and Aydin, O., Prediction of the Stresses around Main and Tail Gates During Top Coal Caving by 3D Numerical Analysis, J. Rock Mech. and Min. Sci., 2015, vol. 76, pp. 88–97.
Mikhlin, S.G., Stresses in Rocks above a Coal Seam, Izv. AN SSSR. OTN, 1942, no. 7, 8, pp. 13–28.
Barenblatt, G.I. and Khristianovich, S.A., Roof Falls in Underground Openings, Izv. AN SSSR. OTN, 1955, no. 11, pp. 73–86.
Shaposhnik, Yu.N., Neverov, A.A., Neverov, S.A., and Nikol’sky, A.N., Assessment of Influence of Voids on Phase II Mining Safety at Artemievsk Deposit, J. Min. Sci., 2017, vol. 53, no. 3, pp. 523–532.
Goldshtein, R.V. and Osipenko, N.M., Modeling of Motion Mechanism in the Intermediate Layer between Contacting Bodies in Compression Shear, Mechanics of Solids, 2016, vol. 51, no. 3, pp. 284–297.
Mirsalimov, V.M., Maximum Strength of Opening in Crack-Weakened Rock Mass, J. Min. Sci., 2019, vol. 55, no. 1, pp. 9–17.
Gritsko, G.I., Vlasenko, B.V., and Posokhov, G.E., Prognozirovanie i raschet proyavlenii gornogo davleniya (Prediction and Calculation of Confining Pressure Events), Novosibirsk: Nauka, 1980.
Funding
The study was supported by the Russian Foundation for Basic Research, project no. 18-05-00533.
Author information
Authors and Affiliations
Corresponding author
Additional information
Russian Text © The Author(s), 2020, published in Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, 2020, no. 2, pp. 51–57.
Rights and permissions
About this article
Cite this article
Mirenkov, V.E. Influence of Stresses and Displacements in Roof Rocks on Roof Fracture in Top Coal Caving. J Min Sci 56, 203–208 (2020). https://doi.org/10.1134/S1062739120026650
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S1062739120026650