Effect of Loading and Unloading on Steady-State Creep Rate of Single-fracture Rocks with Different Angles

3rd International Symposium on Resource Exploration and Environmental Science

生态环境科学

Wang, Yongyan^1 ; Feng, Xuezhi^1

Qingdao University of Science and Technology, Qingdao, China^1

关键词: Confining pressures;    Loading and unloading;    Similar material;    Single fracture;    Soft rocks;    Steady state creep rate;    Triaxial creep tests;    Unloading tests;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/300/2/022044/pdf
DOI  :  10.1088/1755-1315/300/2/022044

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Soft rock-like specimens with different single-fracture angles were prepared by using similar materials. Uniaxial and triaxial creep tests and confining pressure unloading tests were carried out for single-fracture rock-like specimens with different angles. The results show that the steady-state creep rate shows a parabolic trend with the change of angle under the same load. The steady-state creep rate increases first with the increase of angle, then decreases with the increase of angle. The steady-state creep rate peaks at about 30 degrees, and the steady-state creep rate of the complete specimen is the smallest.