CURRENT ISSUES OF DISK TOOLS USE ON THE WORKING BODIES OF SELECTIVE ACTION ROADHEADERS
Since the use of disc rock destruction tool on the selective action cutting header’s executive body is a little-studied issue, this circumstance dictates conditions for certain research considering the process of breaking, crushing and loading the rock in the reversible mode of operation of the working body. In view of the above, research on the development of a double-crown boom-operated cutting header with a disc rock-destroying tool is an urgent scientific task. Operation of cutting headers with selective action and subsequent destruction of rock mass can be accompanied by certain disadvantages such as overgrinding of coal and leaving of small fractions followed by high air dustiness in the mine working, increased power consumption, significant consumption of cutting tools in the process of destruction of hard and abrasive rocks inclusions. At operation of cutters their failure at the expense of deformation and breakage: a cutting insert and a holder that influences on loss of cutters is marked. Often, cutting tools fail due to wear and tear. This article presents information covering the development of coal mining in Russia and Kuzbass during the last ten years; formation of the park of roadheaders at Kuzbass mines; functional capabilities of the designs of selective action roadheaders executing bodies; research results on rock destruction parameters when using disc tools; direction for further research related to the development of double-crowned boom-operated executing bodies of disc-type roadheaders.