Abstract
This paper studies the rock mass stress state of deposits under highland conditions, depending on the geological structure of a particular rock mass area, the tectonic field of stresses and the region relief. This study is aimed to develop an experimental method for assessing and monitoring the properties and state of the rock mass adjacent to mine workings. Experimental studies are performed through stresses measurements in-situ. Based on research results, it has been revealed that the geological structures, tectonic fields of stresses and the earth’s surface relief of the deposit normally reflect the values and direction of the main stresses acting in the rock mass. These patterns can be used to predict and assess the stress state of the rock mass. During the rock mass stress state assessment, quantitative dependences have been obtained for determining the stress tensors conditioned by the overlying rocks weight, tectonics and fracturing, and the deposit surface relief The research results make possible to assess the nature of the stresses distribution, to identify the areas of reduced, equal, increased and maximum stresses concentration of the virgin rock mass, as well as to increase the efficiency of the geoacoustic control developed by the authors for the state of the rock mass adjacent to mine working.
Highlights
The growing tuff-stones consumption in the national economy requires their additional study, as well as improvement of production and processing technology
This work has been performed on the basis of the National University of Water Management Engineering (NUWME, Rivne) and with the participation of specialists from Rafalivskyj Kar’er, PAT (Rivne region, Volodymyrets district, Ivanchi)
The authors express their gratitude to the rector of NUWME prof
Summary
The growing tuff-stones consumption in the national economy requires their additional study, as well as improvement of production and processing technology. Their rich microelement composition in the form of native copper, iron, titanium, etc. Unique sorption and selective abilities represent wide opportunities for using tuff-stone in many economy sectors. The surface conditions of the tuff-stone occurrence enable its mining by both quarry and downhole methods. The downhole method of mining is possible without significant costs for overburden mining, as it is noted in the following publications [3, 4]
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