Mathematical model of rock compaction for operation in zones of high tectonic stresses

Authors: Pugach A. S.

The article presents the mathematical model of rock compaction for safety evaluation during coal mining. The model is developed for evaluating mining safety in zones of high tectonic stresses and nearby geological faults. The model takes into account subsidiary moduli of deformation: secant modulus, modulus of deformation in uniform compression and model of overall deformation in triaxial relaxation from stresses. The eigensolution is compared with the stress–strain assessment in the vicinity of a single fault and at two mutually effecting faults with regard to horizontal tectonic components of overburden pressure. The problem on distribution of bending moments which lead to distortion of roof support along the boundaries of three stopes with regard to their mutual influence is solved. Furthermore, stress patterns were calculated around stopes exposed to the effect of tectonic and gravity forces. The mathematical model results agree with the calculated data obtained by N.N. Fotieva, I.A. Turchaninov and V.N. Morozov to determine loading patterns in the vicinity of underground openings, assess influence exerted by gravity and tectonic components of overburden pressure, as well as estimate effects of faulting. The proposed mathematical model of rock compaction is applicable for the regional deep-level predictions in coal mines in zones of high tectonic stresses.

Keywords: mine, safety, rock burst, mathematical model, rocks, zones of tectonic stresses, stress–strain behavior, deep levels, rock compaction model, tectonic faults, deformation moduli.
For citation:

Pugach A. S. Mathematical model of rock compaction for operation in zones of high tectonic stresses. MIAB. Mining Inf. Anal. Bull. 2022;(6):167-181. [In Russ]. DOI: 10.25018/0236_1493_2022_6_0_167.

Acknowledgements:
Issue number: 6
Year: 2022
Page number: 167-181
ISBN: 0236-1493
UDK: 622.02:51-74:51-72
DOI: 10.25018/0236_1493_2022_6_0_167
Article receipt date: 25.01.2022
Date of review receipt: 09.02.2022
Date of the editorial board′s decision on the article′s publishing: 10.05.2022
About authors:

A.S. Pugach, Senior Lecturer, Mining Institute, National University of Science and Technology «MISiS», 119049, Moscow, Russia, e-mail: as.pugach@misis.ru, Alpugach@mail.ru, ORCID ID: 0000-0002-9353-4567.

 

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