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Coalfields in the north of Spain ... related to very steep and vertical coal seams and its ... of surface movement after mining a steep seam. Coal Sci ...
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The caving mechanism analysis of steep coal seam mining After the steep seam was mined, the roof rock curved and caved, the caving rock fell, then
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This paper adopt fuzzy comprehensive evaluation method to evaluate the mining methods for complex difficult steep coal seam. Using FP to calculate weight
Numerical Simulation of The Influence of Steep Coal Seam Mining to Roof Fault Activation . Mingdong Zhao. a*, Zilong Guan. b, Donglin Dong. .
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Retrospective analysis of the subsidence of coal seams. Application of a profile function calibrated with very steep seams (0°90°)
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