Mechanical properties of granite under real-time high temperature and three-dimensional stress
文献类型：期刊论文
| 作者 | Ma, Xiao1,2; Wang, Guiling3; Hu, Dawei1,2; Liu, Yanguang3; Zhou, Hui1,2; Liu, Feng3 |
| 刊名 | INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES
 |
| 出版日期 | 2020-12-01 |
| 卷号 | 136页码:8 |
| ISSN号 | 1365-1609 |
| 关键词 | Real-time high temperature Triaxial compression Granite Fracture morphology Biotite toughness enhancement |
| DOI | 10.1016/j.ijrmms.2020.104521 |
| 英文摘要 | Knowledge of mechanical properties of rocks under real-time high temperature and three-dimensional stress is critically important for stability analysis in Hot Dry Rock. In this context, the effects of temperature and horizontal stress on the mechanical behaviors of granite were investigated. A series of triaxial compression tests were performed on granite samples under real-time high temperature (up to 400 degrees C) by a self-developed real-time high temperature true triaxial test system. The test results showed that the mechanical properties of studied granite first increase before some temperature threshold, and then decrease with increasing temperature. The brittle characteristics of studied granite observed under low horizontal stress and room temperature are attenuated with increasing stress and temperature. Furthermore, observation of the fracture morphology of the samples indicates that the biotite particles undergo toughness enhancement at elevated temperature, which is the main reason for the reduction of rock brittleness and reinforcement in mechanical properties with increasing temperature. Finally, the effects of real-time high temperature on cohesion and internal friction angle were analyzed and compared with the previous test results of cohesion and internal friction angle of the samples subjected to pretreatment of high temperature. A sound difference in cohesion and little difference in the internal friction angle were observed between the two cases. The test results could improve our understanding of the impact of temperature and stress on the mechanical properties of granite. |
| 资助项目 | National Key R&D Program of China[2018YFC0809600] ; National Key R&D Program of China[2018YFC0809601] ; National Natural Science Foundation of China[51779252] ; National Natural Science Foundation of China[51479193] ; China Geological Survey Bureau[DD20190128] ; Major Technological Innovation Projects of Hubei[2017AAA128] ; Hubei Province Natural Science Foundation Innovation Group[2018CFA013] ; Project of Key Construction Technology of Starting and Super Short Distance Underpass of Metro Tunnel Shield[2019-SZ06B-FB-009] |
| WOS研究方向 | Engineering ; Mining & Mineral Processing |
| 语种 | 英语 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| WOS记录号 | WOS:000599909900003 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/25385]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Hu, Dawei |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Geol Sci, Inst Hydrogeol & Environm Geol, Shijiazhuang 050061, Hebei, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ma, Xiao,Wang, Guiling,Hu, Dawei,et al. Mechanical properties of granite under real-time high temperature and three-dimensional stress[J]. INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES,2020,136:8. |
| APA | Ma, Xiao,Wang, Guiling,Hu, Dawei,Liu, Yanguang,Zhou, Hui,&Liu, Feng.(2020).Mechanical properties of granite under real-time high temperature and three-dimensional stress.INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES,136,8. |
| MLA | Ma, Xiao,et al."Mechanical properties of granite under real-time high temperature and three-dimensional stress".INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES 136(2020):8. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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