Analysis of geodynamic behavior of rock mass for the purpose of rock burst prediction

The article generalizes in-situ research data on determination and estimation of the stress–strain behavior of rock mass by geomechanical and geophysical methods for the purpose of rockburst hazard prediction, including core disking, borehole slotting in representative sites and visual inspection of operating levels in mines. Core disking reveals no rockburst hazard signs in rock mass areas beyond the influence zone of stoping. However, the joint data of visual inspection and geophysical survey in rock mass structured as tectonic blocks exhibit that the confining pressure-induced phenomena at the boundaries of access, preparatory and production excavations are interconnected and confined to characteristic sites and geometrical shapes of tectonic blocks. It is observed that the confining pressure-induced phenomena occur not in all tectonic blocks but only in the suitable sites of certain geometry and with certain orientation of principal tectonic stresses. Based on the integrated research implementation, the recommendations are given for the improvement of the existing mining technology in sites with the poor stress–strain behavior of rock mass.

Keywords: geomechanics, stress–strain behavior, rock bursts, rock mass, rock, core disking, borehole slotting, inspection, stress, underground excavation, mining, support.
For citation:

Raimjanov B. R., Khasanov А. R., Farmanov О. E. Analysis of geodynamic behavior of rock mass for the purpose of rock burst prediction. MIAB. Mining Inf. Anal. Bull. 2021;(10):29-41. [In Russ]. DOI: 10.25018/0236_1493_2021_10_0_29.

Acknowledgements:
Issue number: 10
Year: 2021
Page number: 29-41
ISBN: 0236-1493
UDK: 622.272.63
DOI: 10.25018/0236_1493_2021_10_0_29
Article receipt date: 26.01.2021
Date of review receipt: 01.03.2021
Date of the editorial board′s decision on the article′s publishing: 10.09.2021
About authors:

B.R. Raimjanov, Dr. Sci. (Eng.), Professor, Almalyk branch of National University of Science and Technology «MISiS», Almalyk, Republic Uzbekistan, e-mail: afnitumisis@mail.ru,
A.R. Кhasanov, Head of the Mining Research Laboratory, Uzbek Research and Design Institute of Geotechnology and Non-Ferrous Metallurgy «UzGEORANGMETLITI» under the State Committee of the Republic of Uzbekistan on Geology and Mineral Resources, Tashkent, Republic of Uzbekistan, e-mail: info@georang.uz,
О.E. Farmanov, Head of the Mining Department, Navoi Mountain-Metallurgical Integrated Works Southern Mining Administration, URU NGMK, Nurabad, Republic Uzbekistan, e-mail: info@uru.ngmk.uz.

 

For contacts:

A.R. Кhasanov, e-mail: info@georang.uz.

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