Optimization study on transverse mining zoning during the capacity expansion stage of nearly horizontal open-pit coal mines [PDF]
Scientific ReportsTo address key challenges during the capacity expansion of the Baoqing Chaoyang Open-Pit Coal Mine from 7 to 11 Mt/a—such as insufficient working-line length, excessive advancing intensity, poor coordination between mining zones, elevated internal dump ...
Yu Wen +5 more
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Investigation on the transition depth of open pit to underground mining in Sijiaying iron mine [PDF]
Scientific ReportsWhen the expansion of an open pit limit is restricted by the permanent facilities located near the boundary of the pit, the traditional economic evaluation method is insufficient to determine the ultimate transition depth of mining from open pit to ...
Chi Ma +6 more
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Effects of mass concentration and curing age on the mechanical properties and damage evolution of aeolian sand backfill [PDF]
Scientific ReportsAs the critical load-bearing structure in the management of open-pit mine goaf areas, the mechanical properties of cemented backfill material play a decisive role in strata stability. This study investigates the influence of solids mass concentration (a)
Guibin Zhao +4 more
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On the organization of excavation and transportation equipment in the coal-bearing zones at open pit mines [PDF]
E3S Web of Conferences, 2021 One of the essential issues of the benches’ development procedure is the choice of the method of seam development in the complex structure: joint development of rock and coal seams in one complex face or their separate excavation in blocks of 50-100 m in
Tyulenev Maxim +4 more
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Some peculiarities of excavation of three flat seams strata using draglines [PDF]
E3S Web of Conferences, 2021 One of the methods of increasing the efficiency of dragline operation is to optimize their work when mining the end sections of the cuts. This is especially important when the length of the work front is relatively short.
Fedotov Andrew +3 more
doaj +1 more source
On evaluation of complex-structured coal deposits based on their typical geometric features [PDF]
E3S Web of Conferences, 2021 Information about the geological structure of Kuznetsky coal basin (Kuzbass) allows us to note that coal deposits developed by open-cast method are characterized by complicated conditions and have the following features: large length of deposits at ...
Katsubin Alexander +2 more
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Passive Experiments for Monitoring Mining Operations by Dragline at Kuzbass Open Pits – Estimation of Coal Losses [PDF]
E3S Web of Conferences, 2020 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.
Selyukov Alexei, Byrdin Kirill
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The Results of Mining and Geometric Analysis in Open Pit Mining of Promising Kuzbass Coal Deposits with Block System [PDF]
E3S Web of Conferences, 2020 Currently, in developing the most inclined and steep coal deposits in the Central and Northern Kuzbass (Western Siberia, Russia), the deeping longitudinal open pit mining method is used with overburden rock moved to external dumps using transport ...
Selyukov Alexei +2 more
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Technological schemes of coal extraction in closed mines with the use of backhoes [PDF]
E3S Web of Conferences, 2021 At the present time on the fields of operating and closed-down mines there are sections of open-pit operations. However, the adopted technology does not meet environmental requirements, there are no scientific recommendations on the technology of open ...
Makarov Vladimir +2 more
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Technological Indicators of Direct Dumping Zone as a Part of Combined Mining Method [PDF]
E3S Web of Conferences, 2019 Under the conditions of a combined mining system overburden is developed using a transport and non-transport technologies, specific costs for non-transport technology are lower than transport costs. The change in the non-transport bench height led to the
Sysoev Andrey +3 more
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