单轴压缩下双试样相互作用的实验研究  

Experimental Study of Interaction of Two Rock Specimen Under Uniaxial Compression

作　　者：陈忠辉[1] 傅宇方[1] 唐春安[1] 

机构地区：[1]东北大学资源与土木工程学院

出　　处：《东北大学学报（自然科学版）》1997年第4期382-385,共4页Journal of Northeastern University(Natural Science)

基　　金：国家跨世纪人才基金;国家自然科学基金

摘　　要：建立了一个双试样加载的力学模型．通过分别测试试样中的载荷－时间和变形－时间关系，探讨了双试样加载系统的变形规律．当加载达到其中１个试样的强度之后，试样将分别表现出弹性回弹行为和失稳破坏行为．实验结果表明，这些行为与双试样的强度、刚度及均匀度参数有关．研究发现，对于地震、岩爆以及其他地质类灾害的研究而言，研究弹性回弹区的性质与研究失稳破裂区的性质具有同等重要性．A double rock sample model for studying the deformation behavior of rock is presented based on the measurements of load time and deformation time relations of rock samples under loading conditions. When the maximum strength of one of the samples is reached,the two samples demonstrate elastic rebound and unstable failure behavior,respectively. Experiments show that these behaviors are related to the sample properties,such as strength,stiffness and homogeneity. It is seen that the study of the elastic rebound behavior is as important as the study of unstable behavior of rock for the prediction of earthquake,rockbursts and some geological catastrophic processes.

关 键 词：双试样 相互作用 力学模型 岩体 破裂实验 

分 类 号：TU458.3[建筑科学—岩土工程]