摘要
本文运用测定岩石应力-应变全过程曲线的新方法,进行了非稳态加载情况下岩石破裂过程的试验研究,并通过对试验机与岩样组成的共同作用系统的稳定性分析,从实验和理论上探讨了胞性岩石破裂的前兆应力降和前兆变形规律,定量地阐述了产生这些前兆现象的原因及其与地震前兆的联系。分析表明,前兆变形率比前兆变形更能反映主破裂前兆现象的强烈程度。
The rupture experiment under the unstable loading condition has been carried out on the brittle rock of marble with a new method of measuring the complete load-deformation curve of rock specimen, and the stability of the testing machinespecimen system is considered.In this way the law of the precursory deformation and stress drop of brittle rock is studied.The quantitative description is given about the precursory phenomenon and its reason.Also, the relationship between the phenomenon and the precursory earthquake is disscused.It is indicated that it is better by using precursory deformation rate than by using precursory deformation to describe the intensity of principal rupture of rock.
出处
《地壳形变与地震》
CSCD
1990年第3期12-18,共7页
Crustal Deformation and Earthquake
