Abstract
The study presents an investigation of the consequences of explosive impacts during blasting operations at the Zhairem deposit using numerical modeling in the Ansys LS-DYNA software package. Based on literature data and the physico-mechanical properties of rock materials, two modeling scenarios were implemented: the explosion of a single blast hole and a group of blast holes. Dependencies of internal and kinetic energies, displacements, velocities, and accelerations of the rock mass, as well as the distribution of stresses and pressures within the rock, were obtained. It was shown that the maximum equivalent stress during the explosion of a single hole reaches 923.73 MPa, corresponding to the zone of intensive rock mass destruction. For a group of blast holes, energy release increases by several orders of magnitude, reaching 1.2×10⁹ J. Characteristic phases of energy transformation and blast wave dynamics were identified, allowing the assessment of hazardous zones and potential consequences of unauthorized explosions. The results of the study can be used to improve the safety of blasting operations and to predict the impact of air-blast overpressure on buildings and structures.