Evolution of the mechanical and strength parameters of hard rocks in the true triaxial cyclic loading and unloading tests
文献类型：期刊论文
| 作者 | Feng, Xia-Ting1,2 ; Gao, Yaohui2,3; Zhang, Xiwei1; Wang, Zhaofeng2,3; Zhang, Yan1; Han, Qiang1
|
| 刊名 | INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES
 |
| 出版日期 | 2020-07-01 |
| 卷号 | 131页码:12 |
| 关键词 | True triaxial cyclic loading and unloading test Young's modulus Strain increment ratios Cohesion weakening and frictional strengthening Acoustic emission |
| ISSN号 | 1365-1609 |
| DOI | 10.1016/j.ijrmms.2020.104349 |
| 英文摘要 | Rock fracture process is associated with the degradation and mobilization of the mechanical and strength properties of rock. A number of true triaxial cyclic loading and unloading tests were carried out on three types of hard rocks (i.e., granite, marble and sandstone) to investigate the evolution of the rock properties as a function of accumulated damage. In addition to stress and strain measurements, acoustic emission (AE) signals were monitored and used to associate different stages of crack development with different stages of the mechanical and strength parameter evolution. Young's modulus and five strain increment ratios were calculated from the measured increments of stresses and strains in each cycle. It was found that hard rocks exhibited profound deformation anisotropy and directional dilation. A general trend of decreasing volumetric strain reversal stress and peak stress with increasing plastic strains was observed for all the tested specimens. The evolution of the strength properties of rock under true triaxial compression was investigated using a linear 3D hard rock failure criterion and was found to be generally consistent with the cohesion weakening and frictional strengthening concept. The influence of the intermediate principal stress on the evolution of the rock properties was also discussed. |
| 资助项目 | National Natural Science Foundation of China[51621006] ; National Natural Science Foundation of China[51839003] |
| WOS研究方向 | Engineering ; Mining & Mineral Processing |
| 语种 | 英语 |
| WOS记录号 | WOS:000544101000008 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/24484]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Feng, Xia-Ting |
| 作者单位 | 1.Northeastern Univ, Minist Educ Safe Min Deep Met Mines, Key Lab, Shenyang 110819, Peoples R China 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Feng, Xia-Ting,Gao, Yaohui,Zhang, Xiwei,et al. Evolution of the mechanical and strength parameters of hard rocks in the true triaxial cyclic loading and unloading tests[J]. INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES,2020,131:12. |
| APA | Feng, Xia-Ting,Gao, Yaohui,Zhang, Xiwei,Wang, Zhaofeng,Zhang, Yan,&Han, Qiang.(2020).Evolution of the mechanical and strength parameters of hard rocks in the true triaxial cyclic loading and unloading tests.INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES,131,12. |
| MLA | Feng, Xia-Ting,et al."Evolution of the mechanical and strength parameters of hard rocks in the true triaxial cyclic loading and unloading tests".INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES 131(2020):12. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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