Overall safety of recovery and reconstruction of mine shafts

Recovery and reconstruction of mine shafts become actually of increasingly higher concern. The all-up safety is an obligatory condition of the recovery and reconstruction projects, and includes the performance estimation of a shaft, industrial safety expertise and safety validation. The current regulations in this sphere are imperfect and deficient. Therefore, an integrated method is proposed, including the three-level analysis of rock mass around a shaft, stress testing in lining, 3D numerical modeling, as well as the analysis and prediction of structural reliability of the shaft. The article presents a case-study on safety evaluation of lining structure in a shaft after 50 years of operation, with regard to a random distribution of deformation characteristics of concrete exposed to nonuniform loading. The main solutions on maintainability of lining are discussed. It is suggested to ensure safety by means of automated integrated monitoring with real-time acquisition, transfer and processing of data on control variables. As soon as the control values reach the preset thresholds, the automated system warns the authorized personnel.

Keywords: shaft, reconstruction, lining, concrete, defect, stresses, deformation modulus, loadbearing capacity, safety, monitoring.
For citation:

Pleshko M. S., Nasonov A. A., Dymnikova O. V., Ryabova N. V. Overall safety of recovery and reconstruction of mine shafts. MIAB. Mining Inf. Anal. Bull. 2020;(7):104-112. [In Russ]. DOI: 10.25018/0236-1493-2020-7-0-104-112.

Acknowledgements:
Issue number: 7
Year: 2020
Page number: 104-112
ISBN: 0236-1493
UDK: 624.195
DOI: 10.25018/0236-1493-2020-7-0-104-112
Article receipt date: 26.03.2020
Date of review receipt: 13.04.2020
Date of the editorial board′s decision on the article′s publishing: 20.06.2020
About authors:

M.S. Pleshko1, Dr. Sci. (Eng.), Assistant Professor; Professor, National University of Science and Technology «MISiS», 119049, Moscow, Russia, e-mail: mixail-stepan@mail.ru,
A.A. Nasonov, Cand. Sci. (Eng.), acting Head of Chair, Shakhty Institute (branch) of Platov South-Russian State Polytechnic University (NPI), 346500, Shakhty, Russia, e-mail: tkgsmp@ya.ru,
O.V. Dymnikova1, Cand. Sci. (Chem.), Head of Chair, e-mail: spu-39.1@donstu.ru,
N.V. Ryabova1, Graduate Student, e-mail: spu-39.1@donstu.ru,
1 Don State Technical University, 344023, Rostov-on-Don, Russia.

For contacts:

M.S. Pleshko, e-mail: mixail-stepan@mail.ru.

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