GEOMECHANICAL MONITORING OF MINE SHAFTS IN DIFFICULT GROUND CONDITIONS

Mine shafting is one of the most labor-consuming and technologically complex processes. Mine shaft planning in difficult ground conditions should use modern efficient computational methods for selecting support design of the required load-bearing capacity. The article emphasizes currentness of deformation monitoring in vertical shaft support based on systematic instrumental observations over displacement and convergence of the support points with a view to determining actual stress state of the support. The methods to measure deformation of shaft support are described. The choice of the measurement methods is governed by the technical capabilities and material costs. It is expedient to optimize the geomechanical monitoring expenses by combining tacheometric survey of radial deformation of shaft support, vibrating-wire transducers, laser scanning and fiber-optic sensors.

Keywords

Mine shaft, construction period, support design, load-bearing capacity, difficult ground conditions, concrete lining damage, deformation of reinforcement stages, hoist hovering, damage of buntons, radial displacements in support, deformation monitoring of vertical shaft support, stress state, support life, tacheometric survey of radial deformation, vibrating–wire strain sensors, laser scanning, fiber-optic sensors, measurement automation, data processing, geomechanical behavior prediction, technical state of object, geomechanical monitoring.

Issue number: 8
Year: 2018
ISBN:
UDK: 622.283.4:624.042.13
DOI: 10.25018/0236-1493-2018-8-0-77-83
Authors: Balovtsev S. V., Shevchuk R. V.

About authors: Balovtsev S.V., Candidate of Technical Sciences, Assistant Professor, e-mail: Balovcev@yandex.ru, Shevchuk R.V., Student, e-mail: Shevchuk002@mail.ru, Mining Institute, National University of Science and Technology «MISiS», 119049, Moscow, Russia.

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