Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 5 of 5 for “"Strata control"”.
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Evaluation of strata conditions and performance of support systems of the Emerald Shaft Gold Mine in Gauteng Province of South Africa
… production, highlighting the need for effective strata control measures. This study aimed to evaluate the strata conditions and performance of support systems of the Emerald Shaft Gold Mine to ensure long-term stability. The objectives of the study included reviewing the mine design and layout, …
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Layout design for interactive zones in longwall multiple seam mining
… The thesis examines the occurrence of ground control problems, and possibilities for improvements in strata control, in a variety of undermining situations. The effects of upper seam loading on undermining operations are invest~gated using physical modelling. Photoelastic stress analysis is …
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An analysis of close seam interaction problems in the Appalachian coal fields
Mining into strata disturbed by previous mining operations either above or below may sometimes result in severe strata control problems. These interaction problems, associated with most multiple-seam mining operations, are very common in the Appalachian coal region and are the subject of this …
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Geomechanical behaviour and deformation of coal mine roof strata around faults: toward an engineering geological model
… overlying and underlying siltstone and sandstone strata. In particular, principal horizontal stress axes coincide with the strike of face cleat. The large-scale structural geology has affected the engineering geology and influenced mine panel layout. Rock mass classification was also undertaken at …