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Analysis of global and local stress changes in a longwall gateroad
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Published Date:Jan 2018
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Publisher's site:
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Source:Int J Min Sci Technol. 28(1):127-135
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Language:English
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[PDF-1.34 MB]
Details:
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Alternative Title:Int J Min Sci Technol
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Personal Author:
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Description:A numerical-model-based approach was recently developed for estimating the changes in both the horizontal and vertical loading conditions induced by an approaching longwall face. In this approach, a systematic procedure is used to estimate the model's inputs. Shearing along the bedding planes is modeled with ubiquitous joint elements and interface elements. Coal is modeled with a newly developed coal mass model. The response of the gob is calibrated with back analysis of subsidence data and the results of previously published laboratory tests on rock fragments. The model results were verified with the subsidence and stress data recently collected from a longwall mine in the eastern United States.
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Subject:
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Pubmed ID:30733889
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Pubmed Central ID:PMC6363127
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