Effects of amygdale heterogeneity and sample size on the mechanical properties of basalt
文献类型：期刊论文
| 作者 | Liu, Zhenjiang4; Zhang, Chunsheng3; Zhang, Chuanqing1,2; Wang, Huabin4; Zhou, Hui1,2; Zhou, Bo4 |
| 刊名 | JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING
 |
| 出版日期 | 2022-02-01 |
| 卷号 | 14期号:1页码:93-107 |
| 关键词 | Amygdaloidal basalt Hard brittle rock Structural heterogeneity DFN-FDEM Mechanical properties Size-dependent effect |
| ISSN号 | 1674-7755 |
| DOI | 10.1016/j.jrmge.2021.10.001 |
| 英文摘要 | Due to the complex diagenesis process, basalt usually contains defects in the form of amygdales formed by diagenetic bubbles, which affect its mechanical properties. In this study, a synthetic rock mass method (SRM) based on the combination of discrete fracture network (DFN) and finite-discrete element method (FDEM) is applied to characterizing the amygdaloidal basalt, and to systematically exploring the effects of the development characteristics of amygdales and sample sizes on the mechanical properties of basalt. The results show that with increasing amygdale content, the elastic modulus (E) increases linearly, while the uniaxial compressive strength (UCS) shows an exponential or logarithmic decay. When the orientation of amygdales is between 0 degrees and 90 degrees, basalt shows a relatively pronounced strength and stiffness anisotropy. Based on the analysis of the geometric and mechanical properties, the representative element volume (REV) size of amygdaloidal basalt blocks is determined to be 200 mm, and the mechanical properties obtained on this scale can be regarded as the properties of the equivalent continuum. The results of this research are of value to the understanding of the mechanical properties of amygdaloidal basalt, so as to guide the formulation of engineering design schemes more accurately. (C) 2022 Institute of Rock and Soil Mechanics, Chinese Academy of Sciences. Production and hosting by Elsevier B.V. |
| 资助项目 | Key Projects of the Yalong River Joint Fund of the National Natural Science Foundation of China[U1865203] ; Key Program of National Natural Science Foundation of China[41931286] ; China Postdoctoral Science Foundation[2021M691147] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000753139600006 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/34457]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Zhang, Chuanqing |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 3.PowerChina Huadong Engn Corp Ltd, Hangzhou 310014, Peoples R China 4.Huazhong Univ Sci & Technol, Sch Civil & Hydraul Engn, Wuhan 430074, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Zhenjiang,Zhang, Chunsheng,Zhang, Chuanqing,et al. Effects of amygdale heterogeneity and sample size on the mechanical properties of basalt[J]. JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING,2022,14(1):93-107. |
| APA | Liu, Zhenjiang,Zhang, Chunsheng,Zhang, Chuanqing,Wang, Huabin,Zhou, Hui,&Zhou, Bo.(2022).Effects of amygdale heterogeneity and sample size on the mechanical properties of basalt.JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING,14(1),93-107. |
| MLA | Liu, Zhenjiang,et al."Effects of amygdale heterogeneity and sample size on the mechanical properties of basalt".JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING 14.1(2022):93-107. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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