Analyses the migration mechanism of overlying formation of fore-and-aft mining, and the stability influence of roof-floor rock, gains the stress distribution of plastically deforming area form the elasto-plastic stability of coal pillar.

  • 分析了采动影响前后巷道上覆岩层运动、掘巷前后巷道顶底板的岩层及煤柱稳定性;由煤柱的弹塑性稳定性分析中,得出煤柱塑性区应力分布;

  • 互联网摘选 2025-01-20 17:25:29

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