Mechanism of Secondary Breakage in the Overlying Strata during Repetitious Mining of an Ultrathick Coal Seam in Design Stage
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DOI: 10.1155/2019/5090326
Abstract: When designing the mining of an ultrathick coal seam, the laws governing movement in the overlying strata during mining are a fundamental issue based on which several problems are addressed, including determining the mining method… read more here.
Keywords: coal seam; ultrathick coal; overlying strata; mining ultrathick ... See more keywords