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NUMERICAL ANALYSIS ON TOP COAL MOVEMENT AND STRESS DISTRIBUTION IN MECHANIZED TOP CAVING MINING OF THICK COAL SEAM
Author(s): 
Pages: 56-59
Year: Issue:  10
Journal: CHINA MINING MAGAZINE

Keyword:  厚煤层综放顶煤运移顶煤分区;
Abstract: 通过数值模拟分析,提示了厚煤层综放开采时顶煤运移和应力分布规律.在支架围岩相互作用过程中,支架顶梁有一个先承载后卸载的过程.根据顶煤所受控制作用的不同,对顶煤沿垂向进行了分区,而根据应力场、破坏场和位移场分布,对顶煤沿走向进行了分区,对现场实施岩层控制、提高顶煤回收率具有指导意义.
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