Method to reconstruct rock mass stress state by solving inverse problems using full-scale experimental data

The method of reconstruction of stress state in rock mass surrounding underground excavations based on solution of boundary inverse problems of finding values and orientation of external stress field components using the data of full-scale experiments is substantiated. The experiment data are taken from the hydraulic fracturing stress measurement carried out in mines of the Upper Kama Potassium Salt Deposit (mines SKRU-1, 2 and 3). The geomechanical model of the object under investigation is developed and the inverse problem is solved. Using the results and the original code for finite-element modeling of structurally inhomogeneous media with discontinuities, the contour lines of the stress tensor components are plotted.