【摘要】 在煤岩力学性能试验的基础上，对煤矸组合系统的力学特性进行了较为深入的分析，揭示了含夹矸顶煤的破碎机理，建立了确定含夹矸层厚度上限值的方法，由此提出了提高含夹矸顶煤冒放性的主要技术措施，并在现场应用中取得了满意的效果．更多还原

【Abstract】 On the basis of mechanical property test of rock, the characteristic of combination system for coal and rock parting were thoroughly studied. The failure mechanism of top-coal with rock parting was investigated. The method of determining the limit thickness of rock parting within top-coal was given. Key technical measures of improving the caving behavior of top-coal with rock parting were advanced. And an obvious effect has been got in practice.更多还原