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采用三维数值模拟软件FLAC~(3D)对缓倾斜煤层沿空掘巷进行数值计算分析,探讨采用不同宽度窄煤柱护巷时在掘巷期间及回采期间巷道围岩应力与变形破坏特征,得出合理的窄煤柱宽度为5 m。
The 3D numerical simulation software FLAC ~ (3D) is used to carry out numerical analysis of roadway driving along gently inclined coal seam to discuss the characteristics of stress and deformation of surrounding rock during roadway driving and roadway driving with narrow coal pillar with different width. A reasonable narrow pillar width of 5 m.