Results 31 to 40 of about 119,952 (305)

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, Shishkov Roman, Kucherova Elena, Moldazhanov Marat   +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, Makarov Vladimir, Strelnikov Andrey, Tyuleneva Ekaterina   +3 more
doaj   +1 more source

Research on characteristics and prediction of vehicle speed in open-pit mines based on spatiotemporal and meteorological factors

Gong-kuang zidonghua
Existing prediction models for vehicle speed in open-pit mines do not fully consider the influence of meteorological factors on operating speed. The data sample sets are insufficient to train or fine-tune deep learning models.
QU Daolong, FU Ensan, PAN Fei, LIU Hanquan, YANG Yanfeng, LIU Guangwei   +5 more
doaj   +1 more source

Topical problems concerning both methods and economy to develop mineral deposits [PDF]

, 2018
Purpose. Development of mining enterprises adaptation to changes in conjuncture of a product market relying upon its competitiveness while reducing expenditures connected with mineral stock extraction at the expense of mining operation schedule ...
Kasianenko, L, Mormul, T, Romaniuk, N, Vagonova, O, Zakharchenko, Yu   +4 more
core   +1 more source

Controlled mining technology of multi-weak bedding down-dipping soft rock slope

Meikuang Anquan
Aiming at the problem of coal at the lower part of multi-weak bedding down-dipping soft rock slope, from the perspective of controllable slope deformation risk and the maximization of resource recovery, based on the analysis of geological data and weak ...
Jiao WANG, Qingdi CUI, Chengjiang LIANG, Daolong QU, Haiyang FENG, Hanquan LIU   +5 more
doaj   +1 more source

Innovative numerical modelling of technogenic rock arrays structure

E3S Web of Conferences, 2017
Numerical simulation of bulk technogenic rock arrays, unlike the full-scale, has a number of advantages. They are: the large amount of low cost measurements; operative selection of parameters necessary for the environment with the given properties ...
Markov Sergey, Tyulenev Maxim, Litvin Oleg, Tyuleneva Ekaterina   +3 more
doaj   +1 more source

IMPROVING THE METHOD OF OPEN-PIT LIGNITE DEPOSITS DEVELOPMENT IN UKRAINE [PDF]

, 2018
Subject of the research is open-pit mining concerning a full- field industrial development of a number of lignite deposits; feasibility study has been performed for them as for the efficient environmental friendly processing of coal and associated ...
Adamchuk, A.A., Dryzhenko, A.Yu., Shustov, O.O., Адамчук, А.А., Адамчук, Андрей Андреевич, Адамчук, Андрій Андрійович, Дриженко, А.Ю., Дриженко, Анатолий Юрьевич, Дриженко, Анатолій Юрійович, Шустов, Александр Александрович, Шустов, О.О., Шустов, Олександр Олександрович   +11 more
core  

Environmental Improvement Of Opencast Mining [PDF]

, 2000
Existing classifications of waste dumps in the quarries are given and their phenomenological nature is clarified. The need to identify the essence of the term "dump" is shown as well as the idea of "dump" as an artificial formation with everted and mixed
S Prokopenko, A Sushko, Yu Filatov, M Kislyakov, I Kislyakov, Zharikov V P, Mikhal'chenko V V, Prokopenko S A, Prokopenko S A, Mikhailov A A, Yu Kryachko O, Maleev N G, Kutepov Yu I, , Bahaeva S P, Cheskidov V V, Gaponov Yu S, Macarisina Yu I, Lesin Yu V, Nevelev A B, Lizunkov V G, Mikhal'chenko V V, Prokopenko S A   +22 more
core   +1 more source

Electrochemical Evaluation of Compressed Selective Laser Melted AlSi7Mg and AlSi10Mg Alloys in Chloride Environment

Advanced Engineering Materials, EarlyView.
The corrosion performance of AlSi7Mg and AlSi10Mg alloys produced through selective laser melting (SLM) was examined under compressive stress in a chloride environment. Electrochemical analyses, including open‐circuit potential (OCP), potentiodynamic polarization (CPP), and electrochemical impedance spectroscopy (EIS), were complemented by scanning ...
Femi John Akinfolarin, Samson Dare Oguntuyi, Peter Apata Olubambi   +2 more
wiley   +1 more source

Innovative Processing of Compacted Waste Aluminum Alloy Powders via Controlled Remelting and Solidification

Advanced Engineering Materials, EarlyView.
This study demonstrates an efficient recycling route for out‐of‐spec AlSi10Mg atomized powders through compaction and arc remelting followed by suction casting. By correlating compaction load, cooling rate, and resulting microstructure, we show that intermediate pressures (50–80 kN) and rapid cooling refine dendrites, reduce porosity, and enhance ...
Mila Christy de Oliveira, Marcella Gaute Cavalcante Xavier, Abdoul‐Aziz Bogno, Piter Gargarella, José Eduardo Spinelli   +4 more
wiley   +1 more source