Moscow State University of Technologies and Management (Moscow, Russia):

Kozlov V. V., Head of a Chair, Candidate of Engineering Sciences, e-mail: Kozmaster@rambler.ru

Reaching the high economic results of coal mining are the basic tasks, which are set before the Russian coal mining industry on the modern stage of development in new economic conditions. This condition assumes the tendency to the maximal efficiency of usage of modern mechanized complexes and aggregates, which can solve the technological tasks and define the organization of industrial processes at the country's mines.
Organization of efficient industry foresees the guaranteeing of high extraction capacities of minerals (particularly, for the period of assembling and dismelting of mechanized complex).
In recent years, there has been observed the steady tendency of worsening of mining-geological and mine engineering conditions of development of coal deposits, which is basically caused by increasing of depth of mining operations and necessity of mastering of reserves of mine field areas, which are unfavorable, according to different reasons. The following factors are caused by the growth of the depth of development:
-intensification of the consequences of the stress state of massif;
-increasing of the gas bearing capacity of coal layers and adjacent strata;
-increasing of amount of mine layers, which are dangerous, because of coal and gas blows and bounces;
-appearance of blow danger of certain sandstones;
-significant increasing of amount of geological faults.
Complexation of mining and geological conditions, as well as increasing of the length of lavas and working areas, lead to the repetitive changes of development conditions of separate areas of extraction pillars, relative to each other. According to this, bringing of the length of extraction pillar to optimal with average length of working areas of 538 m, leads to 1-4 turns of complexes.
According to the change of the development conditions, there were either changed the conceptions about the organization of work of mechanized complexes in lavas. According to the analysis, the choice of existing and possible schemes of organization of production of maneuvering of mechanized complex is a multiversion task, which is based on the variety of mining and geological, geomechanical, technological, technical and economic indices. Accuracy and efficiency of the choice of schemes, makes an influence on the efficiency of usage of purification equipment and operation of mine.

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