The article describes a design concept providing sufficient visibility of the target coverage for mine excavator operators. The efficiency of the proposed engineering solution is estimated based on the visibility coefficient.
Oil and gas output grows mainly due to the development of new fields, automation and perfection of equipment and technologies for oil and gas well drilling and expansion of drilling scope. Today, the industry is faced with the challenge of new field development in conditions of the Extreme North, where permafrost rock formations occur.
Shaping of an underground working-reservoir, production of salt brines of the desired concentration and construction period are the main and most important criteria of underground reservoir construction in rock salt.
The article describes the opportunities provided by ground penetrating radar in geophysical exploration of diamond placers. Different types of placers and characteristics of methods of geophysical exploration are discussed. Based on the practice of ground penetrating radar application in placer deposit exploration it is proposed to use this method for in-mine exploration and additional exploration of placer sites planned for mining.
Estimating the mining conditions of the Elga coal deposit with the view of the KSMEtype surface miner application
Based on the analysis of structural characteristics, coal seam and interbedding thickness and occurrence of the Elga coal deposit, as well as virgin rock strength prosperities the author proves the feasibility of the KSM-type surface miner application. The estimates are provided of the area of different rock type sections by depth and strike, and rock volume of interbeddings. It is also proved that selective mining of a structurally complex coal seam with the use of surface miners is the most reasonable technology providing the enhancement of coal qualitative characteristics.
Formation of a geological simulation model is of great importance in modeling of geomechanical processes of structurally complex deposit development. Depending on geological conditions of structurally complex deposit development a geomechanical model is selected, and following the detailed mining-geometry analysis a design pattern is identified, which serves for the calculation of the parameters of an ultimate slope or the one with the specified stability margin factor.