Based on the AE characteristics to study the failing process of deep granite under cyclic loading
In the deep underground environment, with the high temperature and high confining pressure, the characteristics of hard rock, such as granite, will transform from brittleness to plasticity.Also, the mechanical behaviors and constitutive relations of the rock have great variation.For the rock under cyclic loading, its inner cracks are extended by stages, and the failing process is affected by cracks spatial distributions, mechanics behaviors and loading situations, which make the study more complex.In this paper, the triaxial compression test and Acoustic Emission (AE) monitoring test were used to analyze the failing mechanism of rocks.Also, the AE characteristics and their corresponding stress in each stage of failing process were described, so as to indicate the strength envelope of crack initiation, crack damage strength, peak strength and residential strength.At last, the relationship between AE characteristics and rock failing was obtained.
L.Chen L.Qiao X.Wang
Civil and Environmental Engineering School, University of Science and Technology Beijing, Beijing, China
国际会议
The 3rd ISRM Young Scholars Symposium on Rock Mechanics(第三届国际岩石力学青年学者论坛)
北京
英文
71-75
2014-11-08（万方平台首次上网日期，不代表论文的发表时间）