Abstract
Aiming to build up a phenomenological basis for the theory of interaction between geomechanical, thermal and physicochemical processes in methane-bearing coal in Kuzbass, the authors performed a set of laboratory bench tests on uniaxial stiff loading of various rank coal specimens. The pressure versus temperature dependences are obtained for coal specimens with granite gaskets using high-precision scanning computerized thermal imager. It is shown that temperature changed in coal specimens subjected to loading to failure is connected with volatile content and internal energy relaxation of methane in Kuzbass coal. Using jointly thermal imaging and laser measuring equipment ALMEC-tv for high-precision and detail control of deformation–wave processes in loaded coal specimens by speckle-method, it has for the first time been proved that nonlinear pendulum-type movements of structural elements are possible in coal specimens with varied temperature field, which is of fundamental importance for actualization of previously ignored mass and gas exchange processes in high-stress coal beds of different grade composition under mining,
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Original Russian Text © V.N. Oparin, T.A. Kiryaeva, O.M. Usol’tseva, P.A. Tsoi, V.N. Semenov, 2015, published in Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, 2015, No. 4, pp. 3–24.
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Oparin, V.N., Kiryaeva, T.A., Usol’tseva, O.M. et al. Nonlinear deformation–wave processes in various rank coal specimens loaded to failure under varied temperature. J Min Sci 51, 641–658 (2015). https://doi.org/10.1134/S1062739115040003
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DOI: https://doi.org/10.1134/S1062739115040003