Fracture mechanical behavior of red sandstone containing a single fissure and two parallel fissures after exposure to different high temperature treatments
文献类型：期刊论文
| 作者 | Yang, Sheng-Qi1,2; Jing, Hong-Wen1; Huang, Yan-Hua1; Ranjith, P. G.2; Jiao, Yu-Yong3 |
| 刊名 | JOURNAL OF STRUCTURAL GEOLOGY
 |
| 出版日期 | 2014 |
| 卷号 | 69页码:245-264 |
| 关键词 | Red sandstone High temperature A single fissure Two parallel fissures Cracks |
| ISSN号 | 0191-8141 |
| DOI | 10.1016/j.jsg.2014.10.014 |
| 英文摘要 | A detailed understanding of the brittle deformation behavior of sandstone containing pre-existing flaws at elevated temperatures is a key concern in underground engineering. In this research, uniaxial compression tests were performed to evaluate the effect of high temperature treatments (300, 600 or 900 degrees C) on the strength, deformability and fracture coalescence behavior of a sandstone containing either a single fissure or two parallel fissures. All experiments focused on rectangular prismatic (80 x 160 x 30 mm) specimens of red sandstone. Constant strain rate experiments were performed on either: (1) specimens that contained a single 2 mm-wide fissure or (2) specimens that contained two 2 mm-wide parallel fissures. The specimens containing either one or two fissures were either left at room temperature (i.e., no heat treatment), or heat treated to 300, 600 or 900 degrees C prior to experimentation. The results demonstrated that, in all cases, the strength and stiffness of red sandstone was increased at 300 degrees C, before decreasing up to our maximum temperature of 900 degrees C. However, the peak strain at failure always showed an increase when the temperature was increased. The crack initiation, propagation and coalescence process were monitored during the deformation using both photographic monitoring and acoustic emission (AE) monitoring techniques. The monitoring results showed that the cracking process depended on both the fissure geometry and the heat treatment temperature. The potential mechanisms causing the differences in the mechanical behavior observed with increasing temperature are discussed, as is the influence of the single fissure and the two parallel fissures on the crack evolution process. These results are important and valuable to understand the fracture mechanism of rock engineering in deep underground mining excavations and nuclear waste depositories. (C) 2014 Elsevier Ltd. All rights reserved. |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000347742100016 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/3661]  |
| 专题 | 岩土力学所知识全产出_期刊论文 国家重点实验室知识产出_期刊论文 |
| 作者单位 | 1.China Univ Min & Technol, Sch Mech & Civil Engn, State Key Lab Geomech & Deep Underground Engn ; 2.Monash Univ, Dept Civil Engn, Deep Earth Energy Res Lab; 3.Chinese Acad Sci, Inst Rock & Soil Mech |
| 推荐引用方式 GB/T 7714 | Yang, Sheng-Qi,Jing, Hong-Wen,Huang, Yan-Hua,et al. Fracture mechanical behavior of red sandstone containing a single fissure and two parallel fissures after exposure to different high temperature treatments[J]. JOURNAL OF STRUCTURAL GEOLOGY,2014,69:245-264. |
| APA | Yang, Sheng-Qi,Jing, Hong-Wen,Huang, Yan-Hua,Ranjith, P. G.,&Jiao, Yu-Yong.(2014).Fracture mechanical behavior of red sandstone containing a single fissure and two parallel fissures after exposure to different high temperature treatments.JOURNAL OF STRUCTURAL GEOLOGY,69,245-264. |
| MLA | Yang, Sheng-Qi,et al."Fracture mechanical behavior of red sandstone containing a single fissure and two parallel fissures after exposure to different high temperature treatments".JOURNAL OF STRUCTURAL GEOLOGY 69(2014):245-264. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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