The article describes problems of blasting operations carried out at an industrial scale using ammonia-nitrate explosives. Based on experimental studies conducted by the authors, it was determined that for use in mining enterprises in Mongolia, primarily in coal mines, the most rational and effective explosives are mixed ones based on ammonium nitrate in the solid state with various liquid as well as solid dispersed fuels additives - ANFO mixtures. The temperature boundaries for the phase transitions of ammonium nitrate in open areas for the period of three months for different humidity values have been determined. The indicators of oil absorption are identified depending on the cycle of phase transitions for ammonium nitrate.
The results of the study of explosive ore preparation of complex-structured massifs of ferruginous quartzites, methods of calculating the parameters of BVR taking into account the peculiarities of the structure and genesis of such massifs, as well as the results of experimental studies of the destruction of ferruginous quartzites and its effect on the indicators of ore preparation are presented.
Analysis of the current state of blasting operations has shown that further growth in the intensity and scale of blasting operations is constrained by the harmful effect of seismic waves caused by blasts on the environment. In order to avoid such action of seismic waves, as well as to increase the efficiency of blasting and to ensure seismic safety of blasting works it is necessary: to determine more accurately the parameters, intensity and permissible levels of the impact of seismic blasting and take into account the influence of various factors of seismic blasting.
Expert method of reducing uncertainty in calculating seismic safety of blasting operationsAnalysis of the current state of blasting operations has shown that further increase in the intensity and scale of blasting operations is constrained by harmful effects on the environment of seismic waves caused by blasts. To avoid such action of seismic waves, as well as to increase the efficiency of blasting and to ensure seismic safety of blasting operations it is necessary to: more accurately determine parameters, intensity and permissible levels of the impact of seismic blasting and take into account the influence of various factors of seismic blasting.
One of the components of the seismic safety expert system (ESSS) structure is the database (DB), which is part of the knowledge base - the core of the ESSS [2]. The database stores factual information about the problem to be solved and data that are relevant to the subject area under consideration.
