Authors: A.B. Palamarchuk, A.V. Stukan, T.N. Gvozdkova

Title of the article: Using of transportless technology during «VI» coal seam mining on Tomusinsky open pit mine

Year: 2019, Issue: 1, Pages: 50-68

Branch of knowledge: MINING AND GEOTECHNICAL ENGINEERING

Index UDK: 622.271.452+622.271.322.2

DOI: 10.26730/2618-7434-2019-1-50-68

Abstract: Completeness of extraction of reserves in open coal mining is an actual problem, especially if there are reserves, the extraction of which was pre-viously limited by geological and technical factors. The article reviews the issue of using transportless technology in the development of mothballed reserves of Seam 6 at Tomusinsky open-pit mine with the dump site of overburden placed over the overlying rock strata. The geological features of the site structure of the field are given, which determine the choice of technology and the procedure for mining the flat lying Seam VI with the bulldozer dumps of overburden rocks located on its overlapping interbed. The method of calculating the linear parameters of the dumps and their capacity when dumping two- and three-tier dumps is described. The spe-cific features of the structure of the overlying strata of sediments (both pri-mary and man-made) and their influence on the choice of technology and the equipment to be used are presented. Two procedures for the seam min-ing are considered: on the dip and up the dip. It was identified that the ex-cavation of these mothballed coal reserves is expedient when they are mined on the dip, the main parameters of the technological schemes for formation of dumps and internal dumps of various tiers erected in mining of the seam are given. The dependence of the number of tiers on the thick-ness of the overlying sediments and geological conditions is revealed, and the maximum number of the internal dump tiers for the conditions under consideration is established.

Key words: transportless tech-nology preserved coal reserves dragline internal dump open pit mining

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