Results 21 to 30 of about 4,694,239 (258)
Influence Degree Analysis of Safety Mining of Coal Face Under Coalfield Fire Area
Meikuang Anquan, 2020 Aiming at the current status of 7-1(Ⅲ) coal field fire area in Huangbaici Coal Mine 021205 working face, the safety mining impact analysis of coal mining face under the coal field fire area was carried out.
CUI Jie, WANG Wei
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Scientific Reports, 2023 In order to study the mining pressure characteristics of the shallow buried coal seam with the same silo working face under the very close mining void zone and the overlying coal rock body, the theoretical analysis is used to determine whether the open ...
Tianwei Lan +6 more
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Generalization of territories’ and enterprises’ ecological assessment methods
Vìsnik Žitomirsʹkogo Deržavnogo Tehnologìčnogo Unìversitetu: Ekonomìčnì Nauki, 2018 The article reveals the modern state of the ecological situation where it is necessary to conduct the research that will allow to find out the ways and provide the measures concerning the improvement of the ecological situation for such entities as ...
Т.K. Vozniuk, А.M. Yusufova
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Electrical engineering & Electromechanics, 2018 Introduction. Polygradient magnetic separation has wide application in industry and in biomedicine. Working process in polygradient separators takes place in a matrix, magnetic elements of which create magnetic forces sufficient to remove small ferro ...
Juraj Gerlici +3 more
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Gong-kuang zidonghua, 2019 In view of goaf spontaneous combustion prevention of 12401 fully mechanized working face with large mining height in Shangwan Coal Mine, CO is determined as prediction index gas of coal spontaneous combustion and C2H4 is used as auxiliary index gas to ...
QU Shijia +3 more
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Applied Sciences, 2023 In underground coal mines, the stability of the retracement channel in the surrounding rock is crucial for the safe and efficient retracement of the equipment and to guarantee the continuity of the retracement work.
Xu Gao +5 more
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Determining the force function distribution in the working zone of a disk magnetic separator
Eastern-European Journal of Enterprise Technologies, 2019 The paper reports a research into the distribution of magnetic force function in the working zone of a newly-designed disk separator, intended to clean the finely-dispersed bulk substances, transported by a belt conveyor, from unwanted ferromagnetic ...
Iryna Shvedchykova +2 more
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Calculation of Coalbed Methane Resources in Mining Stability Zone Based on Gas Emission
Meikuang Anquan, 2020 To calculate the coalbed methane resources in the stable area affected by coal mining, firstly, based on the height of roof caving zone and the water conducting fracture zone, the depth of floor failure zone, and the limit gas emission width of coal ...
LI Dan
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Avoiding the Obstacles in the Robot Working Zone by Using the Lee Algorithm
Advances in Science and Technology Research Journal, 2019 Non-collision trajectories of an industrial robot are the key objective when planning its handling cycles. When the robot should move optimally, precisely and safely in each situation, it is necessary that every obstacle placed in its transition ...
N. Daneshjo +4 more
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Geoenvironmental Disasters, 2023 Background The mining-induced stress in the surrounding rock after coal seam mining is the primary cause of damage and failure of the surrounding rock in the mining area.
Shoulong Ma +5 more
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