Potential rockburst hazard research at the project mining depth at the Valunistoe deposit

The article describes the analytical results on the geological structure of quartz veins, physical and mechanical properties of ore and hard barren rocks and the stress–strain behavior of rock mass of the Valunistoe deposit within the project mining depth range down to 440 m. The analysis of the strain–stress curves obtained in testing of differеn rock samples shows that many types of rocks (vein quartz, tuff, andesite, dacite and rhiodacite) are susceptible to rock bursting. For the rockburst hazard assessment at the deposit, the mathematical modeling of the stress–strain behavior of rock mass is undertaken as a case-study of the cut-and-fill method of mining with regard to the natural stress state of the gravity type. The gravity stresses are low at the depths under analysis, and the natural stresses are therefore incapable to initiate rock bursts. The maximal compressive stresses induced by stoping at the depths down to 400 m are not higher than 0.10–0.43 of the uniaxial compressive strength, which is much lower than the critical stress capable to provoke rock bursts. Thus, it is found that the deposit is beyond the rockburst hazard at the depths down to 400 m below ground surface. The research allows drawing a conclusion that the Valunistoe deposit subjected to mining operations using the adopted geotechnology in the depth range down to 440 m is rockburst nonhazardous.

Keywords: rock bursts, rockburst hazard, stress–strain behavior, cut-and-fill methods, mathematical modeling.
For citation:

Aynbinder I. I., Ovcharenko O. V. Potential rockburst hazard research at the project mining depth at the Valunistoe deposit. MIAB. Mining Inf. Anal. Bull. 2022;(6):35-45. [In Russ]. DOI: 10.25018/0236_1493_2022_6_0_35.

Acknowledgements:
Issue number: 6
Year: 2022
Page number: 35-45
ISBN: 0236-1493
UDK: 622.272:622.274
DOI: 10.25018/0236_1493_2022_6_0_35
Article receipt date: 23.08.2021
Date of review receipt: 15.04.2022
Date of the editorial board′s decision on the article′s publishing: 10.05.2022
About authors:

I.I. Aynbinder1, Dr. Sci. (Eng.), Professor, Head of Department, e-mail: geoexpert@yandex.ru,
O.V. Ovcharenko1, Cand. Sci. (Eng.), Senior Researcher,
1 Institute oh Problems of Comprehensive Exploitation of Mineral Resources of Russian Academy of Sciences, 11020, Moscow, Russia.

 

For contacts:

O.V. Ovcharenko, e-mail: geoexpert@yandex.ru.

Bibliography:

1. Rusanov R. V., Yannikova Yu. Yu., Yannikova L. Yu. Platinum-bearing Au-Ag formations on the example of the Valunistoe deposit (Chukotka Autonomous Okrug). Proceedings of Voronezh State University. Geology. 2019, no. 4, pp. 71—78. [In Russ].

2. Volkov A. V., Prokof'ev V. Yu., Vinokurov S. F., Andreeva O. V., Kiseleva G. D., Galyamov A. L., Murashov K. Yu., Sidorova N. V. Epithermal Au-Ag Valunistoe deposit (Eastern Chukotka, Russia): geological structure, mineralogical and geochemical features and conditions of ore formation. Geologiya rudnykh mestorozhdeniy. 2020, vol. 62, no. 2, pp. 107—133. [In Russ].

3. Federal'nye normy i pravila v oblasti promyshlennoy bezopasnosti «Pravila bezopasnosti pri vedenii gornykh rabot i pererabotke tverdykh poleznykh iskopaemykh». Seriya 03. Vyp. 78, 3-e izd. [Federal norms and rules in the field of industrial safety «Safety rules for mining and processing of solid minerals». Series 03. Issue 78, 3rd edition], Moscow, NTTs PB, 2021, 520 p. [In Russ].

4. Aynbinder I. I., Ovcharenko O. V., Patskevich P. G. Potential rockburst hazard on lower levels of the Shanuch deposit. MIAB. Mining Inf. Anal. Bull. 2019, no. 12, pp. 30–40. [In Russ]. DOI: 10.25018/0236-1493-2019-12-0-30-40.

5. Petukhov I. M., Lin'kov A. M. Mekhanika gornykh udarov i vybrosov [Mechanics of mining impacts and emissions], Moscow, Nedra, 1983, 280 p.

6. Stavrogin A. N., Protosenya A. G. Prochnost' gornykh porod i ustoychivost' vyrabotok na bol'shikh glubinakh [Rock strength and stability of workings at great depths], Moscow, Nedra, 1985, 271 p.

7. Malkowski P., Niedbalski Z. A comprehensive geomechanical method for the assessment of rockburst hazards in underground mining. International Journal of Mining Science and Technology. 2020, vol. 30, no. 3, pp. 345—355.

8. Simser B. P. Rockburst managements in Canadian hard rock mines. Journal of Rock Mechanics and Geotechnical Engineering. 2019, vol. 11, no. 5, pp. 1036 —1043.

9. Jinglin Wen, Husheng Li, Fuxing Jiang Rock burst risk evaluation based on equivalent surrounding rock strength. International Journal of Mining Science and Technology. 2019, vol. 29, no. 4, pp. 571—576.

10. Kozyrev A. A., Kaspar'yan E. V., Fedotova Yu. V., Kuznetsov N. N. Assessment of the degree of impact hazard of rocky rocks based on the results of laboratory tests.Vestnik Murmanskogo Gosudarstvennogo Tekhnicheskogo Universiteta. 2019, vol. 22, no. 1, pp. 138—148. [In Russ].

11. Kozyrev A. A., Kuznetsov N. N., Fedotova Yu. V., Shokov A. N. Determination of the degree of impact hazard of rocky rocks based on the results of tests with uniaxial compression. Izvestiya vysshikh uchebnykh zavedenii. Gornyi zhurnal. 2019, no. 6, pp. 41—50. [In Russ].

12. Metodicheskie rekomendatsii po otsenke sklonnosti rudnykh i nerudnykh mestorozhdeniy k gornym udaram. Prikaz Rostekhnadzora ot 23 maya 2013 g. [Metodicheskie rekomendatsii po otsenke sklonnosti rudnykh i nerudnykh mestorozhdeniy k gornym udaram. Rostechnadzor Order dated May 23, 2013, no. 216. [In Russ].

13. Zienkiewicz O. C., Taylor R. L., Fox D. D. The finite element method for solid and structural mechanics. Oxford: Butterworth-Heinemann, 2013, 672 p.

14. Morozov E. M., Muyzemnek A.Yu., Shadskiy A. S. ANSYS v rukakh inzhenera: Mekhanika razrusheniya [ANSYS in the hands of an engineer: The mechanics of destruction], Moscow, Izd. LENAND, 2021.

15. Kaplun A. B., Morozov E. M., Shamraeva M. A. ANSYS v rukakh inzhenera: Prakticheskoe rukovodstvo [ANSYS in the hands of an engineer: A practical guide], Moscow, Izd. LENAND, 2021.

Our partners

Подписка на рассылку

Раз в месяц Вы будете получать информацию о новом номере журнала, новых книгах издательства, а также о конференциях, форумах и других профессиональных мероприятиях.