裂隙岩石疲劳损伤变形规律CT试验初探  

Deformation characteristic of crack rock fatigure failure by using CT testing

作　　者：郑孝军[1] 胡志军[1] 刘倡清[1] 温克珩[1] 李明飞[1] 

机构地区：[1]西安科技大学建筑与土木工程学院,陕西西安710054

出　　处：《西安科技大学学报》2005年第4期469-472,468,共5页Journal of Xi’an University of Science and Technology

基　　金：国家自然科学基金项目(10202019);陕西省教育厅自然科学专项项目(04JK222)

摘　　要：基于对裂隙岩石的细观CT试验,对含有单一裂纹的贵溪红砂岩在单轴疲劳荷载作用下的损伤扩展机理和演化过程进行了初步的试验研究。结果表明,含有预制裂纹的红砂岩的损伤演化和裂纹的扩展受到预制裂纹的影响,破坏裂纹从预制裂纹尖端起裂,并且最终破坏发生于含有最大预制裂纹的层面。Based on real time CT testing, primary testing study of fatigue failure and deformation mechanism of red sandstone has been completed under uniaxial compression condition. It shows that damage cracks was borne by the prefabricated crack, and the layer which has the large area of prefabricated crack is the damage area of sandstone.

关 键 词：CT试验 疲劳 损伤 裂隙岩石 

分 类 号：TD315.1[矿业工程—矿井建设]