坚硬顶板条件下煤岩体冲击失稳特征与信息研究

Study on Instability Characteristics and Information of Coal and Rock Impact under Condition of Hard Roof

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 analysis of meso-characteristics of coal and rock impact under the condition of hard roof,the characteristics and information before and after the impact of coal and rock were researched. The surface microstrueture characteristics for different burst tendency were analyzed, the change of mesoscopic structure characteristics and organic maceral before and after the impact were discussed, and the mechanism of dynamic instability of coal and rock and the burst tendency were deeply understood.