摘要
利用 CT 识别技术对化学腐蚀下的砂岩进行了三轴加载全过程的即时扫描试验,得到了在不同级荷载作用下砂岩的压密、微裂纹萌生、扩展和破裂的 CT 图像和 CT 数,分析了砂岩损伤演化的细观机理。同时,建立了一个基于化学腐蚀影响和 CT 数的损伤变量模型。
Based on the CT identification technique the real-time scanning experiment of the sandstone under triaxial compression and chemical erosion is completed. The CT images and CT number of the compactness, the formation, extension of micro-cracks and fracture of the sandstone under different levels of loading are attained. The meso-mechanism of failure of the sandstone is analyzed. In the meantime, based on the influence of the chemical erosion and CT number a damage variable model is presented.
出处
《岩土力学》
EI
CAS
CSCD
北大核心
2004年第9期1363-1367,共5页
Rock and Soil Mechanics
基金
国家自然科学基金(编号:10072073)
国家重点基础研究发展规划(2002Cb412708)资助
