Results 21 to 30 of about 119,350 (306)
International Journal of Mining Science and Technology, 2023 This research proposes the utilization of a geopolymer-based blasting sealing material to improve the profitability of coal sales and reduce the rate of coal fragmentation during blasting in open pit mines.
Xiaohua Ding +7 more
doaj +1 more source
, 2021 Open pit mining method is one of the surface mining methods that has a traditional cone-shaped excavation and is usually employed to exploit a near-surface, nonselective and low-grade zones deposits. It often results in high productivity and requires large capital investments, low operating costs, and good safety conditions.
H., Altiti, Awwad +2 more
openaire +3 more sources
Rational Use of Land Resource During the Implementation of Transportless System of Coal Strata Surface Mining [PDF]
, 2017 Surface mining and open pits engineering affect the environment in a very negative way. Among other pollutions that open pits make during mineral deposits exploiting, particular problem is the landscape changing. Along with converting the land into pits,
Gvozdkova, T. +4 more
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Justification of the Relationship of Production Capacity and the Parameters of the Blocks at Surface Mining of Existing Kuzbass Quarry Fields [PDF]
E3S Web of Conferences, 2019 Today, up to two-thirds of the world’s minerals are mined in an open, more economical way. However, at the same time, billions of tons of overburden are extracted, which are piled in the dumps, where they are polluted, lose their value and, in addition ...
Selyukov Alexei +2 more
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Studying mathematical model of mine and quarry pneumatic lifting equipment in "skip - guidance devices" systems [PDF]
, 2015 There are two basic ways of mining: open pit and underground in the mining industry: open pit and underground. Underground mining less profitable, however, it is more environmentally friendly. In addition, this method is essentially inevitable due to the
Kitaeva, Mariya Valerievna +3 more
core +1 more source
Fault Analysis of Gearboxes in Open Pit Mine [PDF]
Applied Engineering Letters : Journal of Engineering and Applied Sciences, 2020 The paper presents the results of testing gearboxes in coal open pit mine which have been damaged by various mechanisms. Gearboxes, as constituents of belt conveyors, bucket-wheel excavators and bucket chain excavators and spreaders, are the most loaded segments of drive units the functionality of which affects the operation of complete coal and ...
Vasic M. +2 more
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Automated Stability Analysis of Soil Slopes [PDF]
E3S Web of Conferences, 2019 Herein there is a description of algorithm of the automated forecast of stability for soil slope structures including input of initial data regarding physical and mechanical properties and geometrical parameters of a structure, building of the most ...
Karablin Mikhail +2 more
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Optimization of mining methods for deep orebody of large phosphate mines
Frontiers in Built Environment, 2023 Introduction: Taking Yunnan Phosphate Group Co., Ltd. Kunyang Phosphate Mine No. 2 as the engineering background, this study aims to explore mining methods for deep ore bodies in phosphorus mines.
Di Hou +8 more
doaj +1 more source
Combined Method of Coal Mining in the Opening of Shallow Layers as a Direction of Innovative Development of Geotechnology [PDF]
E3S Web of Conferences, 2021 In recent years, there has been a decline in the efficiency of coal mining by traditional methods. On the one hand, the volume of coal outside the contour of the cut, which is economically impractical for open-pit mining, is increasing. On the other hand,
Tyuleneva Tatiana +3 more
doaj +1 more source
Study of the Backhoe’s Digging Modes at Rock Face Working-Out [PDF]
E3S Web of Conferences, 2019 As is known from the classic works on open pit mining, the bench is a separately developed part of the rock layer, having the form of a step. It should also be noted that it is necessary to clearly differentiate the concepts of “bench height” and “height
Litvin Oleg +3 more
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