In 2002, the MOAZ-75051 model was replaced with MOAZ-75054 dump truck, which was designed with due account for the great operation history of the previous generation of dump trucks. As a total, 1700 this model dump trucks have been manufactured. In 2015, a novel MOAZ75050 model was developed and the prototype dump truck was manufactured. The article describes design and operation features of the MOAZ-75050 dump truck and presents its specifications.
Promising transportation systems for the development of Arctic and Northern territories of the Russian Federation
The development of Northern and Arctic territories of the Russian Federation is driven by the need of mining of a great variety of highvalue minerals, which have a strategic importance for the country’s economy.
Energy and chemical grounds of limiting concentrations for coal dust and methane combustion and explosion
The authors suppose that methods of scientific grounding of the mass concentration lower limit for ignition (LMCL) of the combustible matter must take into account energy characteristics of the interaction of combustible chemical elements entering into chemical reactions. The article contains new definitions of the combustible matter and combustible chemical elements of coal. The authors substantiate their methods of quantitative estimation of energy consumption for breakdown of coal and methane combustible matter molecules into combustible elements, and evaluation of energy liberated in the process of exothermal reactions.
Problems and prospects of the development of explosion safety monitoring systems for underground mine workings
The article is an overview of the main causes of coal dust and methaneair mixture explosions in underground coal mines. The authors draw attention to the shortcomings of the currently available air-gas monitoring systems. The requirements are listed to the explosion safety monitoring systems for underground mine workings. These systems are designed on the basis of the research performed by the National Mining Research Center – A.A. Skochinsky Institute of Mining FGUP, Research Center VostNII AO, Aerotest OOO.
Currently, in rock strata modeling great attention is attached to its block structure, which is documented in Academician M.A. Sadovsky’s studies. Rock strata is understood as a system of blocks having the following characteristic feature: the system of blocks is a hierarchical selfsimilar structure. The block greatest to smallest size ratio ranges from 2 to 5. The authors’ analysis of the core material sampled from the interval belonging to the carboniferous system in the process of borehole 2035 drilling has proved the ratio narrower range of 3 to 3.08.
The article presents a method of local casing of reservoirs for well drilling in the oil fields of Eastern Siberia. The flow process diagram is discussed. The advantages of the method of local well casing are described.