Shape ratio effects on the mechanical characteristics of rectangular prism rocks and isolated pillars under uniaxial compression
文献类型：期刊论文
| 作者 | Du, Kun1; Li, Xuefeng1; Su, Rui1; Tao, Ming1; Lv, Shizhan3; Luo, Jia2; Zhou, Jian1 |
| 刊名 | INTERNATIONAL JOURNAL OF MINING SCIENCE AND TECHNOLOGY
 |
| 出版日期 | 2022-03-01 |
| 卷号 | 32期号:2页码:347 |
| 关键词 | Uniaxial compression test Isolated pillar Rectangular prism Shape ratio effect Failure property |
| ISSN号 | 2095-2686 |
| 英文摘要 | Isolated pillars in underground mines are subjected to uniaxial stress, and the load bearing cross-section of pillars is commonly rectangularly shaped. In addition, the uniaxial compression test (UCT) is widely used for determining the basic mechanical properties of rocks and revealing the mechanism of isolated pillar disasters under unidimensional stress. The shape effects of rock mechanical properties under uniaxial compression are mainly quantitatively reflected in the specific shape ratios of rocks. Therefore, it is necessary to study the detailed shape ratio effects on the mechanical properties of rectangular prism rock specimens and isolated pillars under uniaxial compressive stress. In this study, granite, marble and sandstone rectangular prism specimens with various height to width ratios (r) and width to thickness ratios (u) were prepared and tested. The study results show that r and u have a great influence on the bearing ability of rocks, and thin or high rocks have lower uniaxial compressive strength. Reducing the level of r can enhance the u effect on the strength of rocks, and increasing the level of u can enhance the r effect on the strength of rocks. The lateral strain on the thickness side of the rock specimen is larger than that on the width side, which implies that crack growth occurs easily on the thickness side. Considering r and u, a novel strength prediction model of isolated pillars was proposed based on the testing results, and the prediction model was used for the safety assessment of 179 isolated pillars in the Xianglu Mountain Tungsten Mine.(c) 2022 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:000793519000001 |
| 出版者 | ELSEVIER |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/35010]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.School of Resources and Safety Engineering, Central South University, Changsha 410083, China 2.Hunan Research Institute for Nonferrous Metals CO., LTD, Changsha 410100, China 3.State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China |
| 推荐引用方式 GB/T 7714 | Du, Kun,Li, Xuefeng,Su, Rui,et al. Shape ratio effects on the mechanical characteristics of rectangular prism rocks and isolated pillars under uniaxial compression[J]. INTERNATIONAL JOURNAL OF MINING SCIENCE AND TECHNOLOGY,2022,32(2):347. |
| APA | Du, Kun.,Li, Xuefeng.,Su, Rui.,Tao, Ming.,Lv, Shizhan.,...&Zhou, Jian.(2022).Shape ratio effects on the mechanical characteristics of rectangular prism rocks and isolated pillars under uniaxial compression.INTERNATIONAL JOURNAL OF MINING SCIENCE AND TECHNOLOGY,32(2),347. |
| MLA | Du, Kun,et al."Shape ratio effects on the mechanical characteristics of rectangular prism rocks and isolated pillars under uniaxial compression".INTERNATIONAL JOURNAL OF MINING SCIENCE AND TECHNOLOGY 32.2(2022):347. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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