Passive Experiments for Monitoring Mining Operations by Dragline at Kuzbass Open Pits – Estimation of Coal Losses

Alexei Selyukov,Kirill Byrdin,S Vöth,Y Tan,A Abay,J Janocko,D Nuray,D Szurgacz,M Straka,M Cehlár,M Petrova

doi:10.1051/e3sconf/202017401030

Abstract

The natural conditions for the formation of coal deposits in different regions of the globe are the same, all of them belong to reservoir sedimentary deposits and differ only in the degree of metamorphism and tectonic disturbances. In this regard, coal deposits of the Kuznetsk basin (Kuzbass, Western Siberia, Russia)) that have no analogues in nature are unique. Here are all sorts of options for the occurrence of coal seams both in terms of their thickness, dip angle, number, and the degree of disturbance by plicative and disjunctive disturbances. The article presents some results of research on ways to reduce coal losses in open pit mining during its extraction by draglines. The study was carried out on the example of deposits in Kemerovo region with coal seams in an inclined and steep formations, which allows analyzing the possibilities of applying the proposed technological solutions in the widest range of specific mining and geological conditions.

Highlights

A comprehensive justification of development options for resource-saving technologies for open pit mining of Kuzbass coal deposits, focused on maximum coal extraction, in relation to existing quarry fields, including abandoned open pit mines, as well as promising deposits, should be considered timely
The loaded bucket is pulled to the dragline by the value of the length of the harness
They begin to lift it with a pulling rope and when pumping a loaded bucket back into the face, its rear wall acts as a dump of a bulldozer

Summary

Introduction

A comprehensive justification of development options for resource-saving technologies for open pit mining of Kuzbass coal deposits, focused on maximum coal extraction, in relation to existing quarry fields, including abandoned open pit mines, as well as promising deposits, should be considered timely. Technological solutions developed by Russian [1-6] and foreign [7-9] scientists are designed to enhance the technical and economic efficiency of open pit mining while reducing coal losses in Kuzbass. Reducing coal losses during mining operations by dragline in a coal-and-overburden stope is an important aspect of improving coal production efficiency. Field observations (passive experiment) of the process of mining draglines at the Kedrovsky, Chernigovsky, and Sartaki open pits revealed the following sources of coal losses: cleaning the roof and soil of the seam, in a triangle of not scooping, the breaking by dragline bucket, spillage and blasting

Materials and Methods

Results and Discussion

Conclusions