Authors: V. Martyanov, S. Markov, V. Kolesnikov, E. Tyuleneva, M. Cehlár, J. Janočko, D. Márasová, Cagáňová

Title of the article: Study of inclined deposits opening under the combined mining system: Kureinsky area case-study

Year: 2021, Issue: 4, Pages: 64-88

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

Index UDK: 622.271.3

DOI: 10.26730/2618-7434-2021-4-64-88

Abstract: In the conditions of Kuznetsk Coal Basin, where the predominant amount of reserves is represented by complex structured inclined and steep seams, restoration of lands as the development of mining operations is a difficult task. The fact is that the generally accepted direction of movement of mining works along the dip of strata in Kuzbass leads to a gradual increase in the pit space as the work is deepened and does not allow to combine surface restoration with the process of field development. The disturbed surface, as a rule, is not subject to restoration and thus is withdrawn from agricultural use practically forever. In addition, the entire volume of overburden in this case is located in the external dumps, for the placement of which new areas are withdrawn. Therefore, the economic effect received at the specified direction of moving of the front of works, namely rather small overburden ratio in the initial period of development of cuts and possibility of maintenance of considerable production capacity at rather small capital investments, becomes less essential in comparison with damage from disturbance of the lands suitable for agriculture. Restoration of lands disturbed as a result of mining operations will require significant costs comparable to those of stockpile preparation. In this connection, the direction of moving the front of mining works on the dip or on the rise in terms of land use contains a significant disadvantage, in order to eliminate which it is advisable to move the front of works along the strike. In this case, the front of works, being located from outcrops of strata to the depth limit line and moving along the strike, creates a mined-out space for overburden placement. With appropriate construction of mining technology, each disturbed area in this case will be possible to compensate by restoration of an equivalent area in the mined-out space. Thus, a relatively small part of the disturbed area will be in circulation. Placement of overburden rocks in the mined-out space will help to reduce the distance of their transportation and to combine the process of stockpile preparation with the mining technical or even biological stage of reclamation.

Key words: open-pit mining inclined coal seams transportless technology draglines internal dumping quarry opening turn of mining front opening-up scheme

Receiving date: 12.10.2021

Approval date: 30.11.2021

Publication date: 24.12.2021

CITE DOWNLOAD