摘要
岩石声发射活动主要是由岩石内部裂纹的产生、扩展及断裂产生的。采用二维裂纹构形,运用断裂力学理论,导出了加载速率与裂纹扩展的关系。理论推导表明:对于岩石裂纹扩展产生的声发射活动,试验加载速率越大,裂纹越容易实现失稳扩展,声发射活动越强烈。试验证实了理论推导结果。
The rock抯 acoustic emission activities are mainly related to cracks initiating, propagating andfracturing inside it. The paper analyzed the influence nature of loading velocity on the rock抯 acoustic emission activities applying the theory of fracture mechanics. The theoratical results told us the fact that for the rock抯 acoustic emission activities produced by cracks desirable propagation, the more the loading velocity was giventhe more the acoustic emission activities was got, and vice versa.
出处
《辽宁工程技术大学学报（自然科学版）》
CAS
北大核心
2001年第4期469-471,共3页
Journal of Liaoning Technical University (Natural Science)
