Results 1 to 10 of about 27,641 (164)

Application of coal mine roof rating in Chinese coal mines

open access: yesInternational Journal of Mining Science and Technology, 2018
The coal mine roof rating (CMRR) is a measure of roof quality or structure competency for bedded roof types typically of underground coal mines. The CMRR has been used widely in the US, South Africa, Canada and Australia. In order to investigate the application of the CMRR system in Chinese coal mines, two coal mines in China located in Panjiang Coal ...
Abbas Taheri
exaly   +3 more sources

Intelligent Explorations of Occupational Disease Prevention and Control in Coal Mine [PDF]

open access: yesE3S Web of Conferences, 2022
Coal enterprises in high yield and high efficiency at the same time accompanied by a large number of occupational disease personnel, in order to continuously improve the operating environment of coal mining enterprises in each operation point, reduce ...
Chen Ze   +7 more
doaj   +1 more source

Formula Development and Application of Wall Protection Slurry for Long-distance Horizontal Freezing Boreholes and Thorough Piles [PDF]

open access: yesE3S Web of Conferences, 2020
Since complex barriers need to be passed through during the process of drilling long-distance horizontal freezing boreholes, the stability of the borehole wall at the soft and hard stratum interface is the key in controlling the deflection of the ...
Jiang Guojing   +6 more
doaj   +1 more source

Research on Three-Phase Saturation Distribution Based on Microfluidic Visualization Experiment: A Case Study of Ling Xin Mining Area

open access: yesGeofluids, 2022
Flow characteristics and phase distribution of concentrated brine storage in mining area have been core factors linking to the leakage risk assessment and ecological evaluation.
Xiaolong Hu   +9 more
doaj   +1 more source

Study on the Migration Pattern of Concentrated Brine in Underground Concentrated Brine Storage Reservoir: A Case Study in Ling Xin Mining Area

open access: yesGeofluids, 2022
The discharge of mine water from underground coal mines in arid areas is leading to extensive water loss and secondary pollution. To eliminate the water loss and environmental pollution, sealing the concentrated brine after the mine water treatment in ...
Xiaolong Hu   +7 more
doaj   +1 more source

Study on Mechanism and Main Influencing Factors of Rockburst under Complex Conditions of Hard and Deep Overburden

open access: yesShock and Vibration, 2023
Xinzhuang Coal Mine is a typical kilometer-deep rockburst mine in the Ningzheng mining area of China Huaneng Group, which is still in the capital construction period.
Ma Xingen   +8 more
doaj   +1 more source

Experimental Study on the Property Degradation and Failure Mechanism of Weakly Cemented Sandstone under Dry-Wet Cycles

open access: yesAdvances in Materials Science and Engineering, 2022
Taking the weakly cemented sandstone of Ordos, China, as the research object, the evolution law between the relative stress of weakly cemented sandstone and the multiparameters of the acoustic emission under different dry-wet cycles was explored, and the
Zhaoyang Song   +5 more
doaj   +1 more source

Extremely High Primary Productivity and Organic Matter Enrichment in Lacustrine Sediments: Late Triassic Chang 73 Sub-Member, Western Ordos Basin

open access: yesGeofluids, 2022
The 7th member of the Late Triassic Yanchang Formation is the most important Mesozoic source rocks and shale oil reservoir in the Ordos Basin. The hydrocarbon potential and organic matter enrichment mechanism of this organic-rich member are questioned ...
Zhiwei Liao   +6 more
doaj   +1 more source

Creep Properties of Mudstone Interlayer in Bedded Salt Rock Energy Storage Based on Multistage Creep Test: A Case Study of Huai’an Salt Mine, Jiangsu Province

open access: yesGeofluids, 2022
Salt rock is internationally recognized as an excellent medium for energy storage. However, most of the domestic salt mines are lacustrine laminated formations with mudstone interlayers, which have different creep characteristics to pure salt rocks ...
Jie Chen   +6 more
doaj   +1 more source

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