EVALUATION OF ROCK INRUSH SUSCEPTIBILITY
Purpose. Obtaining the data for calculation of the rock inrush susceptibility.Methods. The thermobaric methods of investigations of sandy shale samples exposed to a hydrostatic pressure of 600 MPa that simulate the heavy pressure of a massif were used. The activation energy of the chemically bound water in the samples using the Broido-Prokopchuk method has been determined.Results. The obtained results of investigation have permitted to ascertain the influence degree of the chemically bound water in dynamic processes. The calculations have been fulfilled that allow explaining the locality of the inrushes in the 6th side footway СП no. 3 of the h 8 “Fominskoy” seam of the “Progress” mine.Scientific novelty. For the first time the hypothesis has been checked that explains the locality of theinrush process with the phase transition of the solid-phase water into the liquid state reducing the physical- mechanical rock properties by Rehbinder effect type.Practical value. It has been established that within the totality of energy data record, in particular by the ratio of the minimum dehydration energy of the chemically bound water Umin to the distortion energy at the heavy pressure W ф under conditions of the volumetric stressing, the rocks containing the coal seams are susceptible to sudden collapses if Umin / W ф.≤ 1.