分析了平巷煤壁中预存裂纹尖端产生翼型张裂纹，形成薄煤层壳，薄煤层壳弯曲变形失稳引发冲击地压的机理。
The formation of thin coal shell that is formed by aerofoil cracks engendered at the tip of primary cracks in the entry's surrounding coal is analysed.
分析了平巷煤壁中预存裂纹尖端产生翼型张裂纹，形成薄煤层壳，薄煤层壳弯曲变形失稳引发冲击地压的机理。
The formation of thin coal shell that is formed by aerofoil cracks engendered at the tip of primary cracks in the entry's surrounding coal is analysed.
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