Characteristics of Airborne Dust in the Return Airways of the Mechanized Longwall Face [PDF]
, 1999 In this paper the results of a research study on the characterisation of airborne dust in the return airway of the mechanized longwall face at Middle Anatolian Lignite Mine, OAL are presented.
Güyagüler, Tevfik, Keskin, Sinan
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Structure model of roadway with large deformation and its basic research into engineering theories [PDF]
, 2014 S povećanjem dubina vađenja rude i nastanka pogoršanih radnih uvjeta, opsežno i brzo vađenje rude u dubini može voditi ka složenijim dinamičkim karakteristikama tunela, njihovom izloženošću dinamičkim nesrećama kao što su raspuknuće stijene te provale ...
Mikael Rinne +4 more
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Simulation Study of Gas Seepage in Goaf Based on Fracture–Seepage Coupling Field
FireIn order to solve the problem of gas overrun in the fully mechanized caving face and the upper corner of high gas and extra-thick coal seam, the fracture and caving process of the roof in the goaf is analyzed and studied by using the relevant theories of
Hongsheng Wang, Huaming An, Xin Zhang
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Requirements for the conceptual design of advanced underground coal extraction systems [PDF]
Conceptual design requirements are presented for underground coal mining systems having substantially improved performance in the areas of production cost and miner safety. Mandatory performance levels are also set for miner health, environmental impact,
Gangal, M. D., Lavin, M. L.
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Experimental research on overlying strata movement and fracture evolution in pillarless stress-relief mining [PDF]
, 2015 core +1 more source
Study on evolution law of overburden fracture in fully-mechanized top-coal caving face with large mining height in thick coal seam [PDF]
Fully mechanized top-coal caving mining with large mining height is easy to form strong strata behavior, and the fracture evolution law of overlying strata is very important for safe production of working face.
Hongtao LIU +5 more
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Hydraulic weakening technology for unsupported top coal at the end of fully mechanized caving face
Gong-kuang zidonghuaTo address the issue of excessive unsupported top coal length and delayed caving at the end of a fully mechanized caving face, a hydraulic weakening technology for face-end top coal in steeply inclined thick coal seams was proposed based on the coal ...
DONG Haofu +7 more
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ProcessesTo address roof overhang hazards (e.g., rock bursts and gas accumulation) in high-gas coal mines, this study proposes a static stress intervention method for controlled directional roof collapse. Using the 150110 fully mechanized face at Yiyuan Coal Mine as a case study, we investigate the mechanical mechanism of static stress intervention-induced roof
Hao Shi +3 more
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矿业科学学报, 2017 In order to grasp the overburden structure and support working resistance of working face in fully-mechanized top coal caving with large mining height in ultra thick coal seam, this paper study the ultra thick coal seam in Tongxin coal mine.The fracture ...
Hou Yunbing +4 more
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Temperature distribution and rise law of low metamorphic steady coal in fully mechanized caving face
Meikuang Anquan, 2021 In order to investigate the actual coal temperature distribution and development trend at the site, take the low metamorphic steady state coal at the 1305 working face of Dananhu No.1 mine during the equipment withdrawal period as the research object, and the infrared thermal imager is used to collect the entire working face temperature data.
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