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caving

industries charbonnière et minière - iate.europa.eu

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The application of fuzzy analytic hierarchy process for thick coal seam mining methods in china... At present, mining methods of thick coal seam include slicing, top coal caving and large cutting height....

industries charbonnière et minière - core.ac.uk - PDF: atlantis-press.com

A solution approach for optimizing long- and short-term production scheduling at lkab's kiruna mineWe present a mixed-integer program to schedule long- and short-term production at LKAB's Kiruna mine, an underground sublevel caving mine located in northern Sweden....

PDF: www.sciencedirect.com

Optimization coal pillar size of top coal caving face with dynamic pressure impact... AH Wilson coal pillar formula was studied precisely by in-site stresses test and numerical simulation analysis for N3-5 top coal caving working face of CHANGCUN coal mine in Lu’an coal district of China, then modified AH Wilson formula was put forward as L = 0.008mH...

PDF: www.scientific.net

Numerical analysis on top coal caving of 2 # coal seam in first mine of chagannaoer... In order to meet the requirements of production ability, the mine was planned to apply mining technology of fully mechanized caving....

PDF: www.scientific.net

dump stowing

industries charbonnière et minière - iate.europa.eu

Publications scientifiques

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Optimization of roadway layout in ultra-close coal seams: a case study... Roadways in close coal seams, especially ultra-close coal seams, confronted difficulties in maintaining, including large deformation of the roadway, roof caving, rib spalling and floor heaving....

construction européenne / industries charbonnière et minière / métallurgie et sidérurgie - core.ac.uk - PDF: figshare.com