Authors: A.V. Katsubin, A.A. Fedotov

Title of the article: Systematization of the mining and geological conditions of the coal-bearing and coal-free zones of the Kuzbass open pits

Year: 2019, Issue: 3, Pages: 60-75

Branch of knowledge: 25.00.22 Geotechnology (underground, open and construction)

Index UDK: 622.271.3

DOI: 10.26730/2618-7434-2019-3-60-75

Abstract: Information on the geological structure of the Kuznetsky coal basin allows us to note that the open-cast coal deposits are characterized by difficult conditions and have the following features: long deposits with significant depths of occurrence; formations of different thicknesses (from 1 to 40 m); different angles of coal seams incidence (from 3 to 90º); a significant number of disturbances in the incidence of strike; different thickness of loose deposits (from 5 to 40 m); a large range of values of the strength of the bedrocks. Coal bed occurrence in central and southern Kuzbass deposits is also very diverse. However, the range of distribution of layers at the angles of incidence is much smaller here. Thus, in the central part of the basin 86% of all formations have a dip angle of 50-90º and in the south of Kuzbass almost all formations (95%) lie at an angle of 3-20º. In the total amount of mountain mass of the section, the coal-saturated zone is 72-84% for the deposits of central Kuzbass and about 70% for deposits in the north and south of the basin. Analysis of the data shows that all deposits of Kuzbass, suitable for open-cast coal mining, are represented mainly by low-thickness and medium-thickness beds. More than 80% of all coal reserves are concentrated in beds with a thickness of up to 10 m. The part of layers with the thickness of more than 20 m is only 1-7%. Low-thickness seams (up to 5 m) contain up to 40-50% of all coal reserves. At inclined and steep deposits 26-48% of overburden rocks are in the interbeds, the thickness of which is less than the minimum required width of the excavator’s cut. In connection with the fact that the work is devoted to the establishment of parameters for the joint use of excavators such as «rope shovels» and «hydraulic shovels and backhoes», then in the analysis of coal-bearing zones of the quarry fields, an important value for the technology of their development is arrangement of seams relative to each other.

Key words: open-pit mining geological structure systematization coal bed technology pre-excavation

Receiving date: 12.10.2019

Approval date: 01.01.1970

Publication date: 30.12.2019

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