Abstract
A model of the geomechanical state of a coal-rock mass, containing in-seam working is developed for reliable estimation of the geomechanical state of a coal seam, containing a layer with lower strength characteristics compared to those of the seam. It is based on the fundamental principles and approaches of deformable solid mechanics and is implemented by the method of boundary integral equations. A computational experiment is performed in the model for a number of mining and geological conditions of the coal deposit. Based on the analysis of the results, several features in the stress distribution in the marginal zone of the seam are identified.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
REFERENCES
G. L. Fisenko, The Limiting State of Rocks around an Excavation (Nedra, Moscow, 1976) [in Russian].
I. A. Turchaninov, M. A. Iofis, and E. V. Kaspar’yan, Fundamentals of Rock Mechanics (Nedra, Leningrad, 1989) [in Russian].
A. A. Borisov, Mechanics of Rock and Rock Mass (Nedra, Moscow, 1980) [in Russian].
W. Gao, “Study on the width of the non-elastic zone in inclined coal pillar for strip mining,” Int. J. Rock Mech. Mining Sci., No. 72, 304–310 (2014).
R. A. Galindo, A. Serrano, and C. Olalla, “Ultimate bearing capacity of rock masses based on modified Mohr-Coulomb strength criterion,” Int. J. Rock Mech. Mining Sci., No. 93, 215–225 (2017).
G. Charehdash and M. Barzegar, “Numerical models currently being developed for in mining industry,” in Proc. 22nd Mine Planning and Equipment Selection MPES Conf. (Springer, Dresden, 2013), pp. 481–490.
N. V. Cherdantsev and S. V. Cherdantsev, “Development of a model of geomechanical state of coal-rock mass, containing mine working,” Bezop. Tr. Prom-sti., No. 11, 41–45 (2014).
N. V. Cherdantsev and S. V. Cherdantsev, “Analysis of the state for a coal massif in-seam working and a geological discontinuity,” Mech. Solids 53 (2), 211–220 (2018).
N. V. Cherdantsev, “On some conditions of the occurrence of the limit state of the roof of a coal seam when practicing the cleaning developm coy,” Bezop. Tr. Prom-sti., No. 5, 17–22 (2017).
I. M. Petukhov and A. M. Linkov, The Mechanics of Rock Bursts and Discharges (Nedra, Moscow, 1983) [in Russian].
B. Zhao, G. Wen, H. Sun, et al., “Similarity criteria and coal-like material in coal and gas outburst physical simulation,” Int. J. Coal Sci. Technol. 5 (2), 167–178 (2018).
O. I. Tchernov and V. N. Puzyrev, Prediction of Sudden Gas and Coal Outbursts (Nedra, Moscow, 1979) [in Russian].
H. Guo and L. Yuan, “An integrated approach to study of strata behavior and gas flow dynamics and its application,” Int. J. Coal Sci. Technol., No. 2, 12–21 (2015).
R. J. Shatter, “Models of guasistatic and dynamic fluid driven fracturing in jointed rocs,” in Proc. 6th ISRM Congress (Montreal, Aug. 1987).
A. V. Shadrin, “Static and dynamic emission hazard of coal seams,” Bezop. Tr. Prom-sti., No. 4, 42–48 (2018).
I. A. Ermakova and N. N. Pirieva, “Analysis of the geomechanical state of safety pillars at the A.D. Ruban mine,” Gorn. Inf.-Anal. Byull., No. 7, 193–199 (2016).
S. A. Khristianovich, Continuum Mechanics (Nauka, Moscow, 1981) [in Russian].
K. V. Ruppeneit, Some Questions of Rock Mechanics (Ugletekhizdat, Moscow, 1954) [in Russian].
N. V. Cherdantsev, “Approach to constructing a hydraulic fracture trajectory in a rock mass near a mine working,” Mech. Solids 55 (8), 1372–1391 (2020).
N. V. Cherdantsev, “The results of numerical solution of the equations of limit state boundary formation areas and their approximation by polynomials,” Bezop. Tr. Prom-sti., No. 6, 7–13 (2019).
N. V. Cherdantsev, “Investigation of the extremely stressed state of the formation in its boundary zone by methods of bulk medium mechanics,” Gorn. Inf.-Anal. Byull., No. 3, 43–57 (2020).
V. V. Sokolovskii, Loose Medium Statics (Nauka, Moscow, 1990) [in Russian].
A. I. Lurie, Theory of Elasticity (Springer, 2005).
V. Z. Parton and P. I. Perlin, Methods of Mathematical Theory of Elasticity (Nauka, Moscow, 1981) [in Russian].
L. V. Kantorovich and V. I. Krylov, Approximate Methods of Higher Analysis (Leningrad: Nauka, Moscow, 1962) [in Russian].
Yu. N. Rabotnov, Mechanics of Deformable Solids (Nauka, Moscow, 1988) [in Russian].
S. V. Cherdantsev and N. V. Cherdantsev, “Effect of a precompressed spring on the discontinuity zone around a cylindrical cavity,” J. Appl. Mech. Techn. Phys. 46 (3), 423–429 (2005).
N. V. Cherdantsev, V. T. Presler, and V. Yu. Isakson, “Geomechanical state of strength-anisotropic rock mass in the vicinity of mating tunnels,” J. Mining Sci. 46 (2), 143–148 (2010).
Author information
Authors and Affiliations
Corresponding author
Additional information
Translated by L. Mukhortova
About this article
Cite this article
Cherdantsev, N.V. Estimation of the Geomechanical State of the Marginal Zone of a Coal Seam Containing a Flimsy Layer. Mech. Solids 56, 1307–1319 (2021). https://doi.org/10.3103/S0025654421070104
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.3103/S0025654421070104