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Numerous abandoned workings, mostly tunnel ones, are present in post shallow mining areas. With time, timber roof supports have been degraded and lost their bearing capacity, while excavations lost stability. The loss of stability of an excavation and its failure is often a cause of sinkholes formation at the surface, sometimes even many years after mining activities were discontinued. Such instances pose a threat to buildings and their users-to public safety. A prediction saying that the probability of sinkhole formation is greater than 0 and smaller than 1 is ambiguous and does not allow making right decisions about the use of land. Therefore, it seems advisable to provide a simple algorithm that would allow to deterministically calculate whether a sinkhole is to be formed or not. This paper presents a method of predicting the probability of sinkhole formation based on Salustowicz’s theory as well as its practical application using a computer program. It should be borne in mind, however, that there are other factors influencing the probability of sinkholes formation, which cannot be taken into account in a mathematical model. These factors include non-mining phenomena, such as suffosion, load imposed on land, vibrations caused by movement of heavy-duty vehicles and other.

Under numerical investigation is propagation of surface pendulum waves in 3D block medium. The medium is modeled by 3D lattice of masses connected with elastic spring connections and viscous dampers. The surface pin vertical pulsed loading is considered. The displacements and velocities of the surface masses are calculated. The numerical results obtained for the block medium are compared with the similar data on elastic medium and in situ experiments carried out by other researchers.

The authors give an assessment of the effect exerted by blasting on the intensity of geodynamic and seismic events. The key regularities of distribution of shocks under blasting of rock blocks are found. The scope of the experimental research embraces determination of seismic velocities on the ground surface in mining area in Gornaya Shoria.

The article reports basic design parameters of open pit mines of Alrosa, as well as criteria and factors that govern the choice of production capacity of an open pit diamond mine under conditions of permafrost. The analytical relations and tables to calculate open pit mine life are presented, and the influence of the rate of the downward advance of an open pit mine on its capacity is demonstrated. The authors formulate key provisions for a paragraph of the national standard of RF enabling systematization of approaches to optimization of open diamond mining parameters.

Geological characteristics of ore and enclosing rock mass at Orlov deposit, including Severnoe body of Novaya ore chute, are given. The ore is extracted by underground method, with slicing and room-and-pillar, and sublevel caving. The technology of backfill preparation based on cement-slag binder is evaluated. After lab experimentation, the rational compositions of the backfill have been developed for Orlov Mine. It is found that activity of granular blast-furnace slag is conditioned by chemical composition, structure and, to a wide extent, by grinding fineness (specific surface). The technical-and-economic assessment of the new technology of backfill preparation has been carried out.

The authors propose a promising approach to reduction of the environmental impact of open pit mineral mining-robotic automation of geotechnologies. The objectives, techniques and advantages of introduction of industrial robots are discussed. The analysis of development and improvement of geotechnical system reveals factors that limit application of mechanized, automated and robotic equipment. The structural elements of geotechnical system using mechanized and robotic mining and transportation machines are compared.

The article describes regularities of mass transfer in filled-up and washed-in piling of mineral mining waste. The criteria and hierarchy are determined to classify structures of waste piles. The structures of waste piles in Kuzbass are classified, and the diversity of one-component and compound structures of piles is presented schematically. It is shown how the determined regularities of mass transfer influence formation of fractional structures of mine waste piles, and on their physical and processing characteristics.

Design of an air drill hammer with the smooth adjustment of the percussion frequency at the constant blow energy is considered. The proposed and analyzed versions of air distribution system are based on using a mechanically closing elastic valve. The test data on experimental prototypes of the air drill hammer with the external distributing elements that set blow frequency are presented. The frequency adjustment ranges are determined.

Aimed at improving efficiency of non-explosive vibroseis method, the new concept of using a solenoid percussive drive enables essential increase in useful mechanical work with the limited external diameter. The results of the finite element modeling of magnetic field in FEMM are reported. The authors have found the force and energy characteristics of the drive and the prospects for its application in a casing with the external diameter limited to 120 mm.

The structural and chemical surface transformation of basic kimberlite-forming minerals (calcite, olivine, serpentine) under the contact with natural and waste mineralized water and products of electrochemical treatment of the water are studied using X-ray photoelectronic spectroscopy, scanning electron microscopy and X-ray spectral micro-analysis, and atomic force microscopy. It is found that contact of kimberlite extract and recycling water induces chemical modification of calcite surface, which consists in adsorption of hydrocarbon impurities, and chlorine- and silica-bearing compounds, majority of which are removed during interaction with the product of electrochemical treatment of recycling water. The change in the structural and chemical surface properties of rock-forming silicates, aside from adsorption-desorption of organic compound, is also connected with the distortion of nano-size layer structure after leaching of Mg, Fe and Si, and with the carbonatization of the surface.