岩爆岩石断裂机理的电镜分析

来源期刊：中南大学学报(自然科学版)1999年第1期

论文作者：冯涛 谢学斌 潘长良 郭然

文章页码：14 - 17

关键词：扫描电镜;断裂机理;岩爆

Key words：electron scanning microscope; fracture mechanism; rockburst

摘    要：为探讨岩爆形成机理,应用扫描电镜对岩爆岩石断口微观形态进行了观察研究.结果表明：岩石解理断裂存在一个明显的主断裂路径,岩爆断裂的微观机制主要是在拉伸、剪切作用下岩石发生低应力脆性 断裂；从岩石断裂微观形态研究岩爆岩石断裂,可以更好地揭示岩石断口微观形貌特征、裂纹生核、扩展及断裂方式与岩爆演进过程的联系.

Abstract: In order to explore rockburst formation mechanism, the authors studied fracture micro-appearance of burst rock by using electron scanning microscope. The results of test show that there is an obvious main fracture route in rock cleavage fracture, the fracture micro-mechanism of rockburst is brittle fracture of rock mainly in the condition of low tensile and shearing stress. The study shows that, we can disclose very well the relation between the rock fractur micro-appearance character, the manner of crack nucleating, spreading and fracturing and the process of rockburst evolution by studying fracture of burst rock based on rock fracture microappearance.