期刊论文

中文

岩土力学

1000-7598

2022

43

9

2525-2538

10.16285/j.rsm.2021.1878

湖南省自然科学基金资助项目(No.2021JJ30575) 国家自然科学基金资助项目(No.51204098)。

本校为第一机构

自组织临界理论为无序和非线性复杂系统的行为特征和演化模式提供了新的解释,基于该理论探讨岩石破裂演化的规律。考虑到体型对其破坏特征的影响,制作了立方体和圆柱体两种体型岩石试件,开展单轴压缩和声发射试验,分析岩石破裂演化过程中自组织临界点前后的声发射信息,根据声发射能量概率密度、声发射空间定位及等候时间的分布,对临界指数k、余震分布指数α和等候时间分布指数δ等参数进行统计。结果表明:不论是立方体还是圆柱体试样,其破坏过程均是一个由低能值的无序稳定态向高能值的有序非稳定态发展的自组织过程,体型对其破坏的自组织过程影响较小,立方体试件相对圆柱体试件,前者从受压到自...

Self-organizing criticality theory provides a new interpretation for the behaviour characteristics and evolution patterns of disordered and non-linear complex systems.Based on this theory,the law of fracture evolution with different rock types was discussed.Considering the influence of body shape on the failure characteristics,uniaxial compression test and acoustic emission(AE) test were carried out on two rock specimens,i.e.cube and cylinder.The acoustic emission information before and after the self-organized critical point during the evoluti...