Журналы →  Gornyi Zhurnal →  2023 →  №7 →  Назад

PHYSICS OF ROCKS AND PROCESSES
Название Geomechanical stress–strain assessment of enclosing rock mass in backfilling mined-out voids with uranium hydrometallurgy residue
DOI 10.17580/gzh.2023.07.01
Автор Lizunkin V. M., Bodrov A. S., Lizunkin M. V., Sosnovskaya E. L.
Информация об авторе

Transbaikal State University, Chita, Russia:

V. M. Lizunkin, Professor, Doctor of Engineering Sciences
M. V. Lizunkin, Professor, Doctor of Engineering Sciences, lmv1972@mail.ru

 

E. P. Slavsky PIMCU, Krasnokamensk, Russia:

A. S. Bodrov, Chief Engineer at Central Research Laboratory, Candidate of Engineering Sciences

 

Institute of Mining, Ural Branch, Russian Academy of Sciences, Yekaterinburg, Russia:
E. L. Sosnovskaya, Senior Researcher, Candidate of Geological and Mineralogical Sciences

Реферат

Over 70 million tons of hydrometallurgical waste have been accumulated in the surface tailings ponds of PJSC PIMCU. The volume of disposal of the waste increases annually, which negatively affects the ecology and financial performance of the Company. It is possible to reduce the volume of old and new ore processing waste by recycling it as a backfill or its components when using mining systems with a cemented paste backfill. The purpose of this work was the geomechanical stress–strain assessment of enclosing rock mass when filling mined-out voids with residue of hydrometallurgical processing of uranium ores. The stress–strain analysis was carried out as a case-study of extraction block 4B-715 of underground mine No. 1 before and after backfilling. The studies used the mixed-type technique of engineering calculations and finite element modeling with the certified FEM software. The simulation was carried out for four geomechanical models along a vertical cross-section across the strike of the ore body and along a horizontal section for the conditions of an empty and backfilled mined-out void. The most unstable areas in the empty mined-out void are the corners of the roof, as well as the local sections in the middle of longitudinal sidewalls in the void and the junctions of the sidewalls with the cross walls. Before backfilling, there can be detachments in the walls and collapses in the corners of the roof and at the wall junctions. After backfilling, the stresses at the boundary of the mined-out space reduce to a level below the strength of adjacent rock mass. The stope filled with a backfill made of hydrometallurgy residue is in the stable condition.

Ключевые слова Hydrometallurgical tailings, uranium ore processing, backfill material, rock mass stress–strain behavior, finite element modeling, geomechanical model, enclosing rocks, compressive strength
Библиографический список

1. Bodrov A. S. Development of backfilling technology using uranium hydrometallurgy residue : Dissertation … of Candidate of Engineering Sciences. Chita, 2022. 182 p.
2. Abramkin N. I., Miroshnichenko K. S., Dorodniy A. V. Justification of efficient recycling and neutralization methods for municipal solid waste using promising geotechnologies. GIAB. 2018. No. 1. pp. 83–91.
3. Volkov E. P., Anushenkov A. N. Developing the technology of mine stowing with processing tailings based hardening blends. Izvestiya vuzov. Gornyi zhurnal. 2019. No. 7. pp. 5–13.
4. Bek А. А., Yestemesov Z. А., Baidzhanov D. О., Fedotenko N. А. Effective strengthening solutions for fractured rock masses using tailings. Eurasian Mining. 2022. No. 1. P. 59–63.

5. Golik V. I., Komashchenko V. I. Ferruginous quartzite processing waste as a source of additional metal recovery and backfilling. Gornyi Zhurnal. 2017. No. 3. pp. 43–47.
6. Darbinyan T. P., Lozitsky V. A., Gogolev D. V., Balandin V. V. Backfill improvement in underground mines of NorNickel’s Polar Division: Current situation and prospects. Gornyi Zhurnal. 2022. No. 1. pp. 80–84.
7. Dzaparov B. Kh., Kharebov G. Z., Stas V. P., Stas P. P. Research of dry mixtures based on production waste for underground construction. Sukhie stroitelnye smesi. 2020. No. 1. pp. 35–38.
8. Kuzmin E. V., Kalakutskiy A. V., Tarasov M. A., Morozov A. A. Concept for Disposal of Class 2 and Class 3 Radioactive Waste in Underground Workings with Isolating Backfilling using Paste made with Processed Uranium Ore Materials. Gornaya pormyshlennost. 2020. No. 6. pp. 31–36.
9. Kulikova A. A., Kovaleva A. M. Use of tailings of enrichment for laying of the developed space of mines. GIAB. 2021. No. 2-1. pp. 144–154.
10. Dushin A. V., Ignatуeva M. N., Yurak V. V., Ivanov A. N. Economic evaluation of environmental impact of mining: Ecosystem approach. Eurasian Mining. 2020. No. 1. pp. 30–36.
11. Montyanova A. N., Trofimov A. V., Rumyantsev A. E., Vilchinskiy V. B., Nagovitsin Yu. N. Experience and efficiency of application of plasticized backfilling concrete. Vestnik Magnitogorskogo gosudarstvennogo tekhnicheskogo universiteta im. G. I. Nosova. 2019. Vol. 17, No. 1. pp. 18–25.
12. Chongchong Qi, Fourie A. Cemented paste backfill for mineral tailings management: Review and futur e perspectives. Minerals Engineering. 2019. Vol. 144. 106025. DOI: 10.1016/j.mineng.2019.106025
13. Fabian K. Implementation-based design – Upfront thinking for tailings, soft soil, sediment and fly ash projects. Paste 2018 : Proceedings of the 21st International Seminar on Paste and Thickened Tailings. Perth : Australian Centre for Geomechanics, 2018. pp. 545–552.
14. Kamarou M., Korob N., Kwapinski W., Romanovski V. High-quality gypsum binders based on synthetic calcium sulfate dihydrate produced from industrial waste. Journal of Industrial and Engineering Chemistry. 2021. Vol. 100. pp. 324–332.
15. Hongjian Lu, Chongchong Qi, Qiusong Chen, Deqing Gan, Zhenlin Xue et al. A new procedure for recycling waste tailings as cemented paste backfill to underground stopes and open pits. Journal of Cleaner Production. 2018. Vol. 188. pp. 601–612.
16. Shenghua Yin, Yajian Shao, Aixiang Wu, Hongjiang Wang, Xiaohui Liu et al. A systematic review of paste technology in metal mines for cleaner produc tion in China. Journal of Cleaner Production. 2020. Vol. 247. 119590. DOI: 10.1016/j.jclepro.2019.119590
17. Jinglin Wen, Husheng Li, Fuxing Jiang, Zhengxing Yu, Haitao Ma et al. Rock burst risk evaluation based on equivalent surrounding rock strength. International Journal of Mining Science and Technology. 2019. Vol. 29, Iss. 4. pp. 571–576.
18. Moatamedi M., Khawaja H. Finite Element Analysis. Boca Raton : CRC Press, 2018. 162 p.
19. Qinghua Lei, Ke Gao. A numerical study of stress variability in heterogeneous fractured rocks. International Journal of Rock Mechanics and Mining Sciences. 2019. Vol. 113. pp. 121–133.
20. Rust W. Non-Linear Finite Element Analysis in Structural Mechanics. Cham : Springer, 2015. 363 p.
21. Vlokh N. P. Ground control in underground mines. Moscow : Nedra, 1994. 208 p.
22. Zubkov A. V. Geomechanics and geotechnology. Yekaterinburg : IGD UrO RAN, 2001. 335 p.
23. Shupletsov Yu. P. Durability and deformability of rock massifs. Yekaterinburg : UrO RAN, 2003. 195 p.
24. Lizunkin M. V. Validation of underground mining technology for structurally complex ore deposits : Dissertation … of Candidate of Engineering Sciences. Chita, 2021. 439 p.

Language of full-text русский
Полный текст статьи Получить
Назад