A consecutive joint shear strength model considering the 3D roughness of real contact joint surface
文献类型：期刊论文
| 作者 | Ban, Liren; Tao, Zhigang; Du, Weisheng; Hou, Yuhang |
| 刊名 | INTERNATIONAL JOURNAL OF MINING SCIENCE AND TECHNOLOGY
 |
| 出版日期 | 2023-05-01 |
| 卷号 | 33期号:5页码:617 |
| 关键词 | Shear strength Actual contact area 3D roughness Shear test |
| ISSN号 | 2095-2686 |
| 英文摘要 | A consecutive joint shear strength model for soft rock joints is proposed in this paper, which takes into account the degradation law of the actual contact three-dimensional (3D) roughness. The essence of the degradation of the maximum possible dilation angle is the degradation of the 3D average equivalent dip angle of the actual contact joint asperities. Firstly, models for calculating the maximum possible dilation angle at the initial and residual shear stress stages are proposed by analyzing the 3D joint morphology characteristics of the corresponding shear stages. Secondly, the variation law of the maximum possible dilation angle is quantified by studying the degradation law of the joint micro convex body. Based on the variation law of the maximum possible dilation angle, the maximum possible shear strength model is proposed. Furthermore, a method to calculate the shear stiffness degradation in the plastic stage is pro-posed. According to the maximum possible shear strength of rock joints, the shear stress-shear displace-ment prediction model of rock joints is obtained. The new model reveals that there is a close relationship between joint shear strength and actual contact joint roughness, and the degradation of shear strength after the peak is due to the degradation of actual contact joint roughness.(c) 2023 2023 Published by Elsevier B.V. on behalf of China University of Mining & Technology. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
| 学科主题 | Mining & Mineral Processing |
| 语种 | 英语 |
| WOS记录号 | WOS:001010949500001 |
| 出版者 | ELSEVIER |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/35475]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.Beijing University of Civil Engineering & Architecture; 2.Chinese Academy of Sciences; Wuhan Institute of Rock & Soil Mechanics, CAS; 3.China University of Mining & Technology; 4.Tsinghua University |
| 推荐引用方式 GB/T 7714 | Ban, Liren,Tao, Zhigang,Du, Weisheng,et al. A consecutive joint shear strength model considering the 3D roughness of real contact joint surface[J]. INTERNATIONAL JOURNAL OF MINING SCIENCE AND TECHNOLOGY,2023,33(5):617. |
| APA | Ban, Liren,Tao, Zhigang,Du, Weisheng,&Hou, Yuhang.(2023).A consecutive joint shear strength model considering the 3D roughness of real contact joint surface.INTERNATIONAL JOURNAL OF MINING SCIENCE AND TECHNOLOGY,33(5),617. |
| MLA | Ban, Liren,et al."A consecutive joint shear strength model considering the 3D roughness of real contact joint surface".INTERNATIONAL JOURNAL OF MINING SCIENCE AND TECHNOLOGY 33.5(2023):617. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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