Modeling geomechanical processes in structurally nonuniform geomass for stability estimation of temporary roadways in coal mines

The article describes the numerical stress–state modeling of structurally nonuniform geomass at variation of the physical and mechanical properties and occurrence depth of a coal seam and enclosing rock mass in the influence zone of a temporary roadway. The stability criteria of the roadway are assumed to be the convergence of sidewalls, roof and floor of the roadway, and the shape and size of the zones of limit state and failure in rock mass in the vicinity of the roadway. Using the numerical modeling results, the stability factors are substantiated for underground openings in coal mines: coal seam strength, strength of dirt bands in coal seam and in roof and floor rock mass, variance of coal occurrence depths in different areas of plicative dislocations. The practical application of the modeling results makes it possible to take into account shapes and sizes of failure zones in adjacent rock mass of mine roadways in development and implementation of process designs aimed at prevention of hazardous industrial situations at the stages of construction and operation. The revealed functional connections between the convergence of sidewalls, roof and floor of mine roadways, sizes of limit state zones in geomass and the change of the physical and mechanical properties of coal and rocks will be used in creation of an intelligent system for the stability prediction in underground openings.

Pavlova L. D., Fryanov V. N. Modeling geomechanical processes in structurally nonuniform geomass for stability estimation of temporary roadways in coal mines. MIAB. Mining Inf. Anal. Bull. 2025;(8):5-16. [In Russ]. DOI: 10.25018/0236_1493_2025_8_0_5.

The study was supported by the Russian Science Foundation, Grant No. 25-21-20080, https://rscf.ru/project/25-21-20080/ and the grant of the Kemerovo Region – Kuzbass.

V.N. Fryanov¹, Dr. Sci. (Eng.), Professor, Professor, e-mail: zzz338@rdtc.ru, ORCID ID: 0000-0001-6803-458X,
L.D. Pavlova¹, Dr. Sci. (Eng.), Professor, Head of Chair, e-mail: ld_pavlova@mail.ru, ORCID ID: 0000-0002-2480-8165,
¹ Siberian State Industrial University (SibSIU), 654007, Novokuznetsk, Russia.

L.D. Pavlova, e-mail: ld_pavlova@mail.ru.

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