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Mining Technology, 2006
Underground coal production at GLE Turkey was originally won from conventional longwall mining (drill and blast) and more recently from the innovative use of the mechanised longwall top coal caving method. This latter method was introduced to gain maximum tonnage from the extraction of an 8 m lignite coal seam under very difficult mining conditions ...
Ediz, I. Göktay +3 more
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Underground coal production at GLE Turkey was originally won from conventional longwall mining (drill and blast) and more recently from the innovative use of the mechanised longwall top coal caving method. This latter method was introduced to gain maximum tonnage from the extraction of an 8 m lignite coal seam under very difficult mining conditions ...
Ediz, I. Göktay +3 more
openaire +2 more sources
Journal of Rock Mechanics and Geotechnical Engineering, 2015 Based on the loose medium flow field theory, the loose top-coal drawing law of longwall top-coal caving (LTCC) mining technology is studied by using self-developed three-dimensional (3D) test device.
Jinwang Zhang, Zhengyang Song
exaly +2 more sources
Mining, Metallurgy & Exploration, 2021
In a fully mechanized top coal caving mining process, the mechanical properties of the top coal deteriorate constantly, and the stability of the support is determined by the boundary position of the top coal entering the limit equilibrium state. Top coal flaking occurs more easily along the advancing direction owing to an increase in the distance of ...
Ding Lang +6 more
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In a fully mechanized top coal caving mining process, the mechanical properties of the top coal deteriorate constantly, and the stability of the support is determined by the boundary position of the top coal entering the limit equilibrium state. Top coal flaking occurs more easily along the advancing direction owing to an increase in the distance of ...
Ding Lang +6 more
openaire +1 more source
Analysis of the dialectical relation between top coal caving and coal-gas outburst
Journal of Coal Science and Engineering (China), 2009According to the different engineering mechanical states of top coal caving and normal stoping of gaseous loose thick coal seams, the dialectical relation between this caving method and dynamic disasters was analyzed by simulating the change of stress states in the process of top coal initial caving with different mining and caving ratios based on the ...
Xian-zheng Meng +3 more
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Research on the development of rock-coal interface monitor in top-coal caving mining
SPIE Proceedings, 2005The strong radioactivity such as shale stone is more than 10 times higher than that of coal and even the medium radioactivity such as pelitic sandstone is 5 times higher than that of coal. Therefore, the natural gamma rays in the coal-rock mixture mainly comes from the refuse and it is feasible to make sure the rate of the refuse in coal-rock mixture ...
Zengcai Wang, Qiang Fu, Zongfa Xie
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Evaluation of Top Coal Yielding Potential in Longwall All Top Coal Caving Mining
2014Longwall Top Coal Caving (LTCC) is a method of extraction for underground mining of thick coal seams. This method, being a combined version of Longwall and Sublevel caving methods, has a higher output than a single longwall face. This is because coal is not only extracted by shearer loader but also produced by simultaneous caving of the remaining top ...
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Interlaminar deformations during top coal caving
Mining informational and analytical bulletin, 2021openaire +1 more source