True triaxial stresses mobilizing dilatant fracturing and engineering failure of hard rocks
文献类型：期刊论文
| 作者 | Zhang, Yan2; Wang, Zhaofeng3; Xu, Dingping3; Gao, Yaohui1; Zhou, Yangyi4; Gu, Liangjie4 |
| 刊名 | ENGINEERING FAILURE ANALYSIS
 |
| 出版日期 | 2023-12-01 |
| 卷号 | 154页码:24 |
| 关键词 | Dilation angle Hard rocks Plastic shear strain Stress state True triaxial |
| ISSN号 | 1350-6307 |
| DOI | 10.1016/j.engfailanal.2023.107652 |
| 英文摘要 | Rock dilation represents a nonlinear deformation and volume change, which can be quantified by the dilation angle, and plays a crucial role in the failure analysis of underground engineering. Traditionally, triaxial models describe the dilation angle as a function of confining stress and plastic shear strain. However, this study has uncovered a new mechanism governing true triaxial compressive fracturing, where dilatant fracturing is naturally mobilized by true triaxial stresses and significantly influenced by intermediate principal stress. The dilation angle has been observed to rapidly increase to a peak and then gradually decrease to a small value with increasing plastic shear strain. Additionally, as the minimum and intermediate principal stresses increase, the rate of change and peak value of the dilation angle decrease. Conversely, these features are reversed when the intermediate principal stress approaches or exceeds the uniaxial compressive strength of hard rocks. In light of these discoveries, based on previous research, a novel rock dilation angle (RDA) model is proposed to describe rock dilation behavior under true triaxial compression, where true triaxial stresses mobilize the dilation angle. The findings and proposed model demonstrate the true triaxial stress-dependent dilatancy behaviors in hard rocks, which are of significant importance for failure analysis in deep rock engineering. |
| 资助项目 | National Natural Science Foundation of China[42107211] ; Natural Science Foundation of Sichuan Province[2022NSFSC1063] ; Key Laboratory of Ministry of Education on Safe Mining of Deep Metal Mines, Northeastern University |
| WOS研究方向 | Engineering ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:001083384300001 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/39688]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Wang, Zhaofeng |
| 作者单位 | 1.PowerChina Huadong Engn Corp Ltd, Hangzhou 310014, Peoples R China 2.Chengdu Univ Technol, State Key Lab Geohazard Prevent & Environm Protect, Chengdu 610059, Peoples R China 3.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 4.Northeastern Univ, Minist Educ Safe Min Deep Met Mines, Key Lab, Shenyang 110819, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Yan,Wang, Zhaofeng,Xu, Dingping,et al. True triaxial stresses mobilizing dilatant fracturing and engineering failure of hard rocks[J]. ENGINEERING FAILURE ANALYSIS,2023,154:24. |
| APA | Zhang, Yan,Wang, Zhaofeng,Xu, Dingping,Gao, Yaohui,Zhou, Yangyi,&Gu, Liangjie.(2023).True triaxial stresses mobilizing dilatant fracturing and engineering failure of hard rocks.ENGINEERING FAILURE ANALYSIS,154,24. |
| MLA | Zhang, Yan,et al."True triaxial stresses mobilizing dilatant fracturing and engineering failure of hard rocks".ENGINEERING FAILURE ANALYSIS 154(2023):24. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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