Abstract
The paper describes the fundamental issues of deformation monitoring systems and instrumental methods for measuring the stress-strain state of the rock massif based on the use of three-component strain sensors developed by specialists from the University of Mines and Avangard OJSC. One of the main tasks of the developed systems is the prediction and prevention of possible dynamic manifestations of rock pressure in rockburst-hazardous deposits.
Highlights
Modern mining enterprises are extremely interested in estimating of the initial stress field in the rock massif, in actual determination of the stress distribution around the underground excavations and in monitoring of the deformation processes in the host rock massif
The main idea of deformation monitoring is to determine the extreme deformations in critical areas of the rock massif corresponding to the stresses at which potential energy accumulates and this energy can be realized in the form of dynamic manifestations of rock pressure
We had the first experience of creating a deformation monitoring system (SMD) in 20112013 at the Glubokiy mine of the Antey deposit in the Trans-Baikal Territory [14]
Summary
Modern mining enterprises are extremely interested in estimating of the initial stress field in the rock massif, in actual determination of the stress distribution around the underground excavations and in monitoring of the deformation processes in the host rock massif. The parameters of the stress-strain state (SSS) are predicted on the basis of numerical modeling of stress fields. Actual numerical models of deposits require the results of field studies of the SSS assessment, which are based on the measurement of deformations (deformation monitoring) of the rock massif during mining operations. Since 2011 specialists of St. Petersburg Mining University and Avangard OJSC [2,3] have been working on the development of deformation monitoring systems (SMD) to predict dangerous geodynamic phenomena during underground mines excavation at Russian mining enterprises. Many scientific publications are devoted to the geodynamic monitoring [4,5,6,7,8,9,10,11,12]
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