ON EVALUATION OF STRESS STATE OF ROCK MASS IN DEPOSITS BY METHODS OF TECTONOPHYSICS
DOI:
https://doi.org/10.25635/2313-1586.2019.04.050Keywords:
stress state, geodynamic hazard, rock bumps, tectonophysics methods, stereographic projection, displacement vector, orientation of main stressesAbstract
The paper summarizes the experience of using the tectonophysics methods to evaluate the stress state of the rock mass in areas of ore and coal deposits. Using the example of two data samples, it is shown that the methods of tectonophysical analysis of disturbances recommended by rock bumps manuals can give both close and significantly different results. Analysis of the distribution of displacement vectors of wings of tectonic disturbances on stereograms allows us to develop some recommendations on the preferred use of tectonophysical methods. The methods that use the isotropic medium model and uniquely relate the direction of disruption displacement to the orientation of the main stress axes are recommended when the spread in orientation of displacement vectors is small. If there is a wide spread in the orientation of displacement vectors for
disturbances, it is recommended to use methods based on a model of an anisotropic medium that enables displacements along arbitrarily oriented weakened planes.
