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Concept of integrated technical evaluation of mine shafts

Authors: Mashin A.N.

Currently in Russia, dozens of mine shafts sunk in the 1950s–70s are still employed in operating mines. Most of the shafts need repair and renewal of different complexity. The article discusses the concept of integrated technical evaluation of mine shafts, including three stages and three levels of on-site reconnaissance. The implementation matrix of the concept is described, and the case-studies of technical evaluation of long-term operating mine shafts are presented. The concept contains three stages of technical evaluation: determination of actual parameters of the rock–lining system; determination of actual load-bearing capacity margin of lining and adjacent rock mass stability; determination of interval and generalized criteria of mine shaft availability, as well as the surface, perimeter and deep-earth levels of reconnaissance. The scope of reconnaissance includes visual inspection of lining, a set of instrumental tests, core sampling, determination of concrete lining strength, geophysical and geomechanical analysis of adjacent rock mass, calculation and statistical processing of data with the subsequent categorization of technical availability of mine shafts. Finally, it is concluded on the necessity of a more accurate ranking of the technical availability categories with regard to further reconstruction and efficiency restoration in faulted mine shafts.

Keywords: vertical shaft, lining, concrete, technical availability, evaluation, load-bearing capacity, stability, defects, stresses, repair, reconstruction.
For citation:

Mashin A. N. Concept of integrated technical evaluation of mine shafts. MIAB. Mining Inf. Anal. Bull. 2023;(10):31-42. [In Russ]. DOI: 10.25018/0236_1493_2023_10_0_31.

Acknowledgements:
Issue number: 10
Year: 2023
Page number: 31-42
ISBN: 0236-1493
UDK: 622.25.(06)
DOI: 10.25018/0236_1493_2023_10_0_31
Article receipt date: 06.07.2023
Date of review receipt: 19.09.2023
Date of the editorial board′s decision on the article′s publishing: 10.09.2023
About authors:

A.N. Mashin, General Director, JSC Transinzhstroy, Moscow, Russia, e-mail: info@tinso.ru.

For contacts:
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