Study on the Crack Morphology of Rock under Three Axis Stress

2nd International Symposium on Resource Exploration and Environmental Science

生态环境科学

Lu, Xigen^1 ; Meng, Zhaohe^2 ; Zhang, Zhenliang^2 ; Xia, Lei^2

School of Civil and Resources, University of Science and Technology Beijing, Beiging

100083, China^1

Baodian Coal Mine, Shandong Yanzhou Coal Mining Co Ltd, Zoucheng

273512, China^2

关键词: Box dimension;    Confining pressures;    Crack dimensions;    Crack morphology;    Deformation Characteristics;    Rock failures;    Rock strength;    Rock stress;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/170/2/022156/pdf
DOI  :  10.1088/1755-1315/170/2/022156

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

According to the three triaxial mechanics test of marble, granite and iron ore, the deformation characteristics of rock strength was analyzed, rock failure crack was acquisition by plastic casing, on the basis of box dimension theory, the relationship between rock crack dimension and rock confining pressure was analyzed. It was found that crack dimension decreases with the increasing of confining pressure, the crack dimension reversible analysis of rock stress state; based on stone weight on plastic casing, the concept of gravel coefficient was put forward, gravel and rock that confining pressure was positively correlated.