基于坚硬顶板条件下煤岩冲击倾向性的细观特征分析,对坚硬顶板条件下煤岩冲击失稳前后特征与信息进行研究。分析了不同冲击倾向性煤岩体表面细观形貌特征,探讨了煤岩冲击动力失稳发生前后煤岩体内细观结构特征及有机显微组分的变化,深入认识了煤岩冲击动力失稳机理及煤岩体冲击倾向性。 Based on the meso-characteristics of coal rock under the hard roof conditions, the characteristics and information of coal rock before and after impact failure are studied under the condition of hard roof. The characteristics of meso-topography of coal and rock mass with different tendency of impact were analyzed. The mesostructural features and changes of organic micro-components in coal before and after rockburst were discussed. In-depth understanding of coal rock impact power Instability Mechanism and Impact Tendency of Coal and Rock Mass.