Influence exerted by underground excavation shape and by effective stresses on the formation of a tensile strain zone at a depth greater than 1 km

The article presents the studies into the secondary stress field formed in surrounding rock mass around underground excavations of different cross-sections and the variants of principal stresses at a mining depth greater than 1 km. The stress–strain analysis of surrounding rock mass around development headings was performed in Map3D environment. The obtained results of the quantitative analysis are currently used in adjustment of the model over the whole period of heading and support of operating mine openings. The estimates of the assumed parameters of excavations, as well as the calculations of micro-strains in surrounding rock mass by three scenarios are given. During heading in the test area in granite, dense fracturing and formation of tensile strain zone proceeds from the boundary of e3 ≥ 350µe and is used to determine rough distances from the roof (Hroof) and sidewalls (Hside) of an underground excavation to the boundary e3 = 350µe (probable rock fracture zone). The modeling has determined the structure of secondary stress and strain fields in the conditions of heading operations at great depths.

Keywords: tensile strains, compression, fractures, effective stresses, cross-section, roof and sidewalls, depth greater than 1 km, rock, Map3D and RocData, model adjustment.
For citation:

Nguyen Van Min, Eremenko V.A., Sukhorukova M.A., Shermatova S. S. Influence exerted by underground excavation shape and by effective stresses on the formation of a tensile strain zone at a depth greater than 1 km. MIAB. Mining Inf. Anal. Bull. 2020;(6):67-75. [In Russ]. DOI: 10.25018/0236-1493-2020-6-0-67-75.

Issue number: 6
Year: 2020
Page number: 67-75
ISBN: 0236-1493
UDK: 622.831; 622,2; 622.235
DOI: 10.25018/0236-1493-2020-6-0-67-75
Article receipt date: 26.02.2020
Date of review receipt: 01.04.2020
Date of the editorial board′s decision on the article′s publishing: 20.05.2020
About authors:

Nguyen Van Min1, Graduate Student, e-mail:,
V.A. Eremenko1, Dr. Sci. (Eng.), Professor, Director of Research Center for Applied Geomechanics and Convergent Technologies in Mining, NUST MISIS, e-mail:,
M.A. Sukhorukova1, Engineer, e-mail:,
S.S. Shermatova, Educational Master, e-mail:, Peoples’ Friendship University of Russia (RUDN University), Engineering Academy, 117198, Moscow, Russia,
1 Mining Institute, National University of Science and Technology «MISiS», 119049, Moscow, Russia.


For contacts:

V.A. Eremenko, e-mail:


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