Finite element analysis of stress-strain state of rocks, considering tectonic stresses
Analytical calculations of stress-strain state of highly tectonically active deposits using the finite element method are presented, and the orientation of principal tectonic stresses is found. The stress-strain state was estimated in host rocks of the Kyzylmasai Mine, in the vicinity of an isolated hip-roof mine working; the calculated stress-strain state was compared with the experimental data on stresses in two mine workings: crossdrift N° 2 and drift 10b. The article presents the analytical models of the crossdrift and drift, the diagrams of stresses and displacements measured in the sections of the crossdrift and drift, and the data obtained at a measurement point. The author has derived analytical formulas to calculate horizontal stresses in an intact rock mass under action of gravity and tectonics.