NUST MISIS, Moscow, Russia:

A. N. Pankratenko, Head of Department, Professor, Doctor of Engineering Sciences, pankratenko.an@misis.ru

Transinzhstroy JSC, Moscow, Russia:
A. N. Mashin, CEO

Platov South-Russian State Polytechnic University, Novocherkassk, Russia:
A. A. Nasonov, Head of Department, Candidate of Engineering Sciences

NorNickel’s Polar Division, Norilsk, Russia:
D. S. Parinov, Chief Mechanic, Engineering Service, Industrial Assets Management

The issues of restoration and reconstruction of mine shafts become of increasingly higher concern these days. Timely accomplishment and complex safety are the first-order conditions of the successful project implementation. The existing regulatory documents in this sphere are inexhaustive. In this respect, and integrated approach is proposed, including geophysical investigation of shaft siding areas, experimental estimation of load-bearing capacity of support systems, experimental computations using 3D finite element method, as well as the analysis and prediction of structural reliability. The authors exemplify implementation of the complex approach. The GRP measurements and seismic research in some shafts revealed long intervals of fractured rocks and damaged rock/lining interface zones, as well as local voids in the space behind the lining. These data were used to adjust mathematical models with the identification of local zones in the fractured shaft side rock mass with low deformation characteristics, and some series of calculations were performed. In the test area of a mine shaft, the calculations and the in-situ measurements of stresses and deformations agreed sufficiently. The authors highlight that the research-based data array enables better reasoned decision-making on design, construction and technology at integrated safety and enhanced efficiency of operations. Moreover, understanding of the actual condition of the shaft lining and adjacent rock mass can help avoid causeless repair which decreases load-bearing capacity of shaft support down to extreme values in the short run, and continually ends with incidents and large accidents in actual practice.

1. Manets I. G., Gryadushchiy B. A., Levit V. V. Mine shaft maintenance and repair. Donetsk : OOO “Yugo-Vostok, Ltd”, 2008. 596 p.

2. Prokopov A. Yu., Saakyan R. O., Pavlinov P. A. Classification of reconstruction methods and flwocharts for mine shafts. GIAB. 2006. No. 3. pp. 90–94.
3. Tarasov V. V., Afanasev I. A., Pestrikova V. S. Methodical regulations by evaluating technical condition of vertical shafts after long-term conservation. Izvestiya Tulskogo gosudarstvennogo univetsiteta. Nauki o Zemle. 2015. No. 3. pp. 77–86.
4. Shmelev G. D., Kononova M. S., Maleva N. A. Reliability, durability and service life of buildings and their structural components. Zhilishchnoe khozyaystvo i kommunalnaya infrastruktura. 2019. No. 2(9). pp. 34–42.
5. Urbaev D. A., Ivanov D. G. Determination of causes of lining instability in vertical shafts and justification of additional measures in terms of reliability. Sovremennye problemy nauki i obrazovaniya. 2012. No. 6.
6. Yagodkin F. I., Prokopov A. Yu., Prokopova M. V. Repair support of vertical mine shafts. Izvestiya Tulskogo gosudarstvennogo univetsiteta. Nauki o Zemle. 2017. No. 3. pp. 195–208.
7. Qing Yu, Kexin Yin, Jinrong Ma, Hideki Shimada. Vertical Shaft Support Improvement Studies by Strata Grouting at Aquifer Zone. Advances in Civil Engineering. 2018. Vol. 2018. ID 5365987. DOI: 10.1155/2018/5365987
8. Jendryś M. Analysis of stress state in mine shaft lining, taking into account superficial defects. IOP Conference Series: Earth and Environmental Science. 2019. Vol. 261. 012016. DOI: 10.1088/1755-1315/261/1/012016
9. Pleshko M., Pankratenko A., Revyakin A., Shchekina E., Kholodova S. New technology of underground structures the framework of restrained urban conditions. High-Rise Construction 2017 : International Scientific Conference. 2017. E3S Web of Conferences. 2018. Vol. 33. 02036. DOI: 10.1051/e3sconf/20183302036
10. Yuezheng Zhang, Hongguang Ji, Hanhua Xu. Study on the Law of Rock Anelastic Recovery and the Characteristics of In Situ Stress Field of 2000 m Deep Stratum in Metal Mines of Coastal Area. Advances in Materials Science and Engineering. 2022. Vol. 2022. ID 2152814. DOI: 10.1155/2022/2152814
11. Xiaoming Sun, Gan Li, Chengwei Zhao, Yangyang Liu, Chengyu Miao. Investigation of Deep Mine Shaft Stability in Alternating Hard and Soft Rock Strata Using Three-Dimensional Numerical Modeling. Processes. 2019. Vol. 7, Iss. 1. DOI: 10.3390/pr7010002
12. Trofimov A. V., Rumyantsev A. E., Gospodarikov A. P., Kirkin A. P. Non-destructive ultrasonic method of testing the strength of backfill concrete at deep Talnakh mines. Tsvetnye Metally. 2020. No. 12. pp. 28–33. DOI: 10.17580/tsm.2020.12.04
13. Kibroev I. S., Manzhosov A. S., Alekseev A. A., Khanina I. A. Nondestructive control in evaluation of concrete lining and the space behind the lining in mine shafts at Talnakh. Gornyi Zhurnal. 2022. No. 10. pp. 77–82. DOI: 10.17580/gzh.2022.10.12
14. Babkin A. I., Sanfirov I. A. Geophysical monitoring of space behind tubbing. GIAB. 2011. No. 1. pp. 213–218.
15. Pleshko M. S., Silchenko Yu. A., Pankratenko A. N., Nasonov A. A. Improvement of the analysis and calculation methods of mine shaft design. GIAB. 2019. No. 12. pp. 55–66.