One of the main problems of effective use of water-containing explosives (WCE) in various mining and geological conditions and especially when blasting waterlogged massifs is the stability of aquatrinitrotoluene charges. When mixing a hot oxidizer solution (HOS) in mixing and charging machines with granulated or flaked TNT, the latter, having the density of granules p = 1,48+1,5 g/cm3, cannot be kept suspended in the explosive mixture, since the density of HOS does not exceed 1,4 g/cm3. As a consequence, there is a stratification of water-filled explosives, which leads to a change in the energy and detonation characteristics of explosives, to a deterioration of bottom penetration, to an increase in the yield of oversized material.
To conduct the most labor-intensive mining work in the construction of excavations, trenches, site planning is the most widely used drilling and blasting method. However, the use of blasting is often hampered by cramped conditions, when in the immediate vicinity are buildings, structures and other objects.