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1-10 of 40 results for lower coal seam

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Select article: Surface Pre-Grouting Borehole Arrangement and Division of the Broken Roof of the Lower Seam of a Bifurcated Coal Seam

Open access

Research article

First published 2023-3

Surface Pre-Grouting Borehole Arrangement and Division of the Broken Roof of the Lower Seam of a Bifurcated Coal Seam

Xiaorong Zhai, Yaoshan Bi, Ru Hu [...]

Energy Exploration & Exploitation

Select article: Roof breaking characteristics and mining pressure APPEARANCE laws in close distance COAL seams

Open access

Research article

First published 2023-3

Roof breaking characteristics and mining pressure APPEARANCE laws in close distance COAL seams

Xuping Li, Yanqing Liu, Xiaopeng Ren [...]

Energy Exploration & Exploitation

Select article: Floor failure depth of upper coal seam during close coal seams mining and its novel detection method

Open access

Research article

First published 2018-9

Floor failure depth of upper coal seam during close coal seams mining and its novel detection method

Wei Zhang, Dongsheng Zhang, Dahong Qi [...]

Energy Exploration & Exploitation

Select article: Comprehensive technical support for safe mining in ultra-close coal seams: A case study

Open access

Research article

First published 2021-7

Comprehensive technical support for safe mining in ultra-close coal seams: A case study

Wei Zhang, Jiawei Guo, Kaidi Xie [...]

Energy Exploration & Exploitation

Select article: Risk assessment method of coal and gas outburst based on improved comprehensive weighting and cloud theory

Open access

Research article

First published 2022-3

Risk assessment method of coal and gas outburst based on improved comprehensive weighting and cloud theory

Chunhua Zhang, Dengming Jiao, Ziwen Dong [...]

Energy Exploration & Exploitation

Select article: Relationships between Trace Element Abundances and Depositional Environments of Coals from the Zhangji Coal Mine,Anhui Province,China

Free access

Research article

First published 2013-3

Relationships between Trace Element Abundances and Depositional Environments of Coals from the Zhangji Coal Mine,Anhui Province,China

Hui Li, Guijian Liu, Ruoyu Sun [...]

Energy Exploration & Exploitation

Select article: Overlying strata movement with ground penetrating radar detection in close-multiple coal seams mining

Open access

Research article

First published 2019-8

Overlying strata movement with ground penetrating radar detection in close-multiple coal seams mining

Yang Li, Jiachen Wang, Yiding Chen [...]

International Journal of Distributed Sensor Networks

Select article: Energy Expenditure and Aerobic Fitness of Male Low Seam Coal Miners

Retricted access

Research article

First published 1983-02

Energy Expenditure and Aerobic Fitness of Male Low Seam Coal Miners

M. Bobo, N. J. Bethea, M. M. Ayoub [...]

Human Factors: The Journal of the Human Factors and Ergonomics Society

Select article: Depositional and Chemical Characterization of Coal from Yayu Coal Field

Free access

Research article

First published 2006-10

Depositional and Chemical Characterization of Coal from Yayu Coal Field

Liu Guijian, Zheng Liugen, Wu Enjiang [...]

Energy Exploration & Exploitation

Select article: Characteristics of Coalbed Methane Reservoirs in Faer Coalfield,Western Guizhou

Free access

Research article

First published 2013-6

Characteristics of Coalbed Methane Reservoirs in Faer Coalfield,Western Guizhou

Ming Li, Bo Jiang, Shoufa Lin [...]

Energy Exploration & Exploitation

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