Results 121 to 130 of about 46,511 (232)

Montana Bureau of Mines and Geology [PDF]

The Montana Bureau of Mines and Geology is the principal source of earth science information for the citizens of Montana. The bureau provides extensive advisory, technical, and informational services on geologic, mineral, energy, and water resources in ...

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Macroscopic failure characteristics and seepage pattern of damaged goaf-side coal pillars under confined water accumulation

Meitian dizhi yu kantan
BackgroundThe method of supporting roadways using small coal pillars has been widely applied in China. As a result, the stability of goaf-side coal pillars affects mining safety.
Weitao LIU, Dongqi CHEN, Yuben LIU, Yanhui DU, Jiyuan ZHAO   +4 more
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Increasing ecological safety during underground mining of iron-ore deposits [PDF]

, 2018
Purpose. To create the technology increasing the level of ecological safety of underground mining of iron ores by means of decreasing the number of harmful substances released into the atmosphere. Methodology. Laboratory and industrial research studies
Khomenko, O.Ye, Kononenko, M.M, Myronova, I.G, Sudakov, A.K   +3 more
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Key technologies and approaches for water resource conservation and utilization in arid to semi-arid open-pit coal mining areas in the northern sand prevention belt of China

Meitian dizhi yu kantan
BackgroundThe northern sand prevention belt (NSPB) of China is primarily distributed in arid and semi-arid regions such as Xinjiang, Inner Mongolia, Ningxia, and Gansu.
Jie FANG, Zhimin XU, Wei CHENG, Zihan LU, Yongqiang ZHAO, Yuhao ZHU, Tianci CHEN   +6 more
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English for Study and Work [PDF]

, 2015
Подано всі види діяльності студентів з вивчення англійської мови, спрямовані на розвиток мовної поведінки, необхідної для ефективного спілкування в академічному та професійному середовищах. Містить завдання і ситуації, типові
Зуенок, И. И., Зуенок, Ирина Ивановна, Зуєнок, І. І., Зуєнок, Ірина Іванівна, Кострицкая, С. И., Кострицкая, Светлана Ивановна, Кострицька, С. І., Кострицька, Світлана Іванівна, Поперечна, Н. В., Поперечна, Неллі Василівна, Поперечная, Н. В., Поперечная, Неллі Василівна, Швец, Е. Д., Швец, Елена Дмитриевна, Швець, О. Д., Швець, Олена Дмитрівна   +15 more
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Commercialization of the nature-resource potential of anthropogenic objects (on the example of exhausted mines and quarries) [PDF]

, 2019
. In this article we developed scientific and applied foundations of commercialization of the nature-resource potential of anthropogenic objects, on the example of exhausted mines.
S. E. Sardak, O. P. Krupskyi, S. I. Korotun, D. E. Reshetniak, Sardak, Sergii   +1 more
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Open Pit Coal Mine Failure Model Based on Statistical Data

IOP Conference Series: Earth and Environmental Science
Abstract Slope stability is paramount in open-pit safety and mine operations, where unexpected failures can have significant consequences. This necessitates a deeper understanding of specific slope behaviour to guide geotechnical professionals in taking preventive measures.
Mulyadi Sannang, Hendra Pachri, Ilham Alimuddin   +2 more
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Experimental study on reconstruction material of impervious layer in open-pit mine external dump in arid area

Meitan kexue jishu
Xinjiang has huge reserves of coal resources and has the conditions and advantages to develop and construct large-scale open-pit coal mines. However, due to the climate characteristics of Xinjiang’s arid areas, open-pit mining has a wide range and high ...
Li MA, Xiaomin WANG, Qifeng ZHANG, Qiang LUO, Yan HU, Ning MA, Mengbo LI   +6 more
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OVERBURDEN AND COAL TRANSPORTATION RESEARCH ON OPEN PIT MINES [PDF]

Journal of Mining and Geotechnical Engineering, 2019
Dmitry M. Dubinkin, Vladimir Yu. Sadovets, George O. Kotiev, Alexander B. Kartashov   +3 more
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Mechanism of reverse deformation increase in the virgin coal rib compared to the pillar rib of the gob-side entry in an extra-thick coal seam

Scientific Reports
The advantage of applying gob-side entries (GSEs) with narrow coal pillars in extra-thick coal seams to improve the recovery rate is particularly significant.
Wenrui He, Dongdong Chen, Hengzhong Zhu
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