Open AccessEXCAVATION OF THIN COAL SEAMS WITH A COMBINED METHOD OF DESTRUCTION
Author(s) -
V. N. Labutin
Publication year - 2019
Publication title -
interèkspo geo-sibirʹ
Language(s) - English
Resource type - Journals
ISSN - 2618-981X
DOI - 10.33764/2618-981x-2019-2-4-138-145
Subject(s) - coal , coal mining , excavator , mining engineering , economic shortage , productivity , petroleum engineering , engineering , production (economics) , environmental science , natural resource economics , waste management , civil engineering , economics , linguistics , philosophy , government (linguistics) , macroeconomics
The information about the state of treatment equipment in the coal mining industry and the problems of coal mining from low-power reservoirs. Competition in the world market determines the main ways of development of mechanization of the treatment dredging. The success of competition depends on the quality of coal and the cost of its production, which is directly dependent on productivity. In recent years, high technical and economic indicators of coal mining from reservoirs with a capacity of 2.0...5.0 m with a drop angle of less than 180 have been achieved. For these conditions in our country and abroad, powerful coal combines (RO drive power up to 850 kW) were created for the excavation of "high-tech" coal seams. The use of such combines with their weight (up to 45T) and dimensions became possible only with sufficient removable power. At the same time, in reservoirs with a capacity of up to 2.0 m, almost 50% of all industrial reserves of high-quality acute shortage coal of existing mines remain, the technical and economic indicators of production of which remain at a low level, so the problem of creating high-performance excavators for low-power coal seams remains relevant. To solve this problem, it is proposed to use a combined destruction, combining layer-by-layer destruction of the middle part of the coal seam with a shock plow and cutting the upper and lower parts of the formation with a screw working body. This combination makes it possible to increase the chip thickness (up to 0.3 m) and feed rate (up to 30 m/min) due to the layer-by-layer impact destruction, increase the productivity and grade of coal compared to traditional destruction.