摘要
为探讨金川矿岩石蠕变破坏机理,应用微观扫描电镜(SEM)对蠕变受力情况下岩石破坏断口微观形态进行了观察研究,并分析了其产生的微观破坏机制。结果表明:岩石蠕变断裂的微观机制主要是拉伸、剪切作用下岩石发生脆性断裂,从岩石断裂微观形态研究岩石蠕变断裂,可以更好的揭示岩石断口微观形貌特征、裂纹生核、扩展、及断裂方式与岩石蠕变演进过程的联系。
Jinchuan ore-rock failure surface micro test is carried out under creep states to study the micro failure character and its mechanism. Based on the test and study, the mechanism of the creep of Jinchuan ore-rock is obtained. The micro failure mechanism of Jinchuan Mine soft rock is brittle fracture under the condition of the comprehensive effect of stretch and shear action. Based on the research of microcosmic creep morphology, the relationship between the creep evaluation process and the micro fracture appearance characteristic, the creak nucleation, the creak propagation and the fracture way is revealed.
出处
《岩土工程技术》
2007年第2期60-63,共4页
Geotechnical Engineering Technique
基金
国家自然科学基金资助项目(5027407450490274)
