充填物对岩石疲劳裂纹萌生及扩展的影响研究  

Research on Effect of Rock Filling on Fatigue Crack Initation and Propagation of the Rock

作　　者：胡盛斌[1] 邓建[1] 彭建华[1] 

机构地区：[1]中南大学资源与安全工程学院,湖南长沙410083

出　　处：《地下空间与工程学报》2005年第6期918-920,共3页Chinese Journal of Underground Space and Engineering

基　　金：国家自然科学基金项目资助(No.50404010;50490274);湖南省杰出青年科学基金资助

摘　　要：针对岩石存在的各种缺陷的特点,采用球形夹杂物理论,对岩石内部充填物与基体进行了应力集中分析和热应力分析,研究了充填物对岩石疲劳裂纹萌生及扩展的影响。作为特例,讨论了孔洞和刚性充填物的情况。In this paper, the effect of rock filling on stress concentration and thermal stress of the rock are studied. According to the characteristic of rock with internal defects, the theory of the spherical inclusion is introduced into the study of rock and its defect-filling. Some analytical solutions of defect-filling-matrix as well as thermal stress analysis were.obtained. Some conclusions about fatigue crack initiation and propagation are drawn based on the analytical analysis. Results of some special eases such as the eases of void and rigid inclusion are discussed.

关 键 词：球形夹杂物 充填物 应力集盅 疲劳 

分 类 号：TD313[矿业工程—矿井建设]