通过理论计算分析在冲击载荷作用下俯伪斜走向分段密集采煤法支护系统的稳定性问题,探讨相关参数如支柱的密集程度、垫层的厚度与弹性、煤层的倾角与厚度,特别是顶板冒落岩块的大小与冒落位置,对支护系统稳定性的影响。此采煤法支护系统的稳定性主要取决于密集柱与顶底板间的最大静摩擦力。当因顶板冒落岩块冲击而产生的摩擦力大于密集柱与顶板间的最大静摩擦力时,支护系统将会因稳定性不足而被冲垮。此法适合于薄煤层,2 m以上的煤层已不适合于此种支护系统。 Through the theoretical calculation and analysis, the stability of sub-inclined strike-to-sub-section mining system under impact loads is analyzed. The relevant parameters such as the degree of pillar piles, the thickness and elasticity of cushion, the inclination and thickness of coal seam, It is the influence of the size and location of the roof falling rocks on the stability of the support system. The stability of the mining method support system mainly depends on the maximum static friction between the dense column and the top floor. When the frictional force due to the impact of roof caving rock is greater than the maximum static friction force between the dense column and roof, the support system will be destroyed due to insufficient stability. This method is suitable for thin seam, 2 m above the coal seam is not suitable for such support system.