This article presents a hybrid modeling approach combining the Smoothed Particle Hydrodynamics (SPH) method with the Finite Element Method (FEM) to investigate dynamic geomechanical processes, including explosive fracturing, gas-dynamic outbursts, and gravity-induced displacements. The model is shown to be highly efficient in simulating large-scale deformations of rock masses and analyzing energy-state activation in gas-saturated coal seams. The authors identify two distinct failure phases, including dynamic fracturing caused by stress wave propagation and quasi-static damage driven by desorbed gases and detonation products. They also consider the influence of the horizontal stress component on explosion efficiency and introduce the concept of a brachistochrone – the curve of fastest descent – as a deformation trajectory in gravitational shifts. It allows predicting failure surfaces without predefined stress concentrators. The model predicts collapse zones and slope stability in open-pit mines and tailings dams, as well as optimizes blasting parameters. Numerical modeling results are discussed along with practical recommendations for drilling and blasting optimization. The methodology has been verified and is suitable for engineering applications.
Author Biography
Ivan Evgen'evich Shipovskii, Institute of Comprehensive Exploitation of Mineral Resources Russian Academy of Sciences, Moscow
