Influences of mechanical damage and water saturation on the distributed thermal conductivity of granite
文献类型：期刊论文
| 作者 | Li, Zheng-Wei4; Zhang, Yan-Jun2,3; Gong, Yan-Hua4; Zhu, Guo-Qiang1 |
| 刊名 | GEOTHERMICS
 |
| 出版日期 | 2020 |
| 卷号 | 83页码:14 |
| 关键词 | Distributed thermal conductivity Optical scanning Acoustic emission Damage evolution Thermal inhomogeneity |
| ISSN号 | 0375-6505 |
| DOI | 10.1016/j.geothermics.2019.101736 |
| 英文摘要 | In this work, influences of mechanical damage and water saturation on the distributed thermal conductivity of granite were experimentally investigated. The samples were artificially damaged using uniaxial cyclic loading and unloading tests, with acoustic emission activity monitored simultaneously. 2D thermal conductivity images were obtained using optical scanning method for both undamaged and damaged samples in dry and saturated conditions. The results indicate that the overall thermal conductivity of the samples decreased after mechanical damage treatment, while the thermal inhomogeneity factor increased. The thermal conductivity difference distribution matched well with the spatial distribution of acoustic emission events. The overall thermal conductivity values increased after water saturation in vacuum condition for both undamaged and damaged samples. Thermal inhomogeneity factor didn't change significantly when undamaged samples were saturated, while thermal inhomogeneity factor of damaged samples decreased to a certain extent when samples were saturated. Research results in this work can provide better knowledge to the evolution mechanism of distributed thermal conductivity of engineering rock masses. |
| 资助项目 | National Natural Science Foundation of China[41702332] ; China Postdoctoral Science Foundation[2018M630302] |
| WOS研究方向 | Energy & Fuels ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000500050300007 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/23091]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Li, Zheng-Wei |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China 2.Jilin Univ, Key Lab Groundwater Resource & Environm, Minist Educ, Changchun 130026, Jilin, Peoples R China 3.Jilin Univ, Coll Construct Engn, Changchun 130026, Jilin, Peoples R China 4.Northeastern Univ, Key Lab, Minist Educ Safe Min Deep Met Mines, Shenyang 110819, Liaoning, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Zheng-Wei,Zhang, Yan-Jun,Gong, Yan-Hua,et al. Influences of mechanical damage and water saturation on the distributed thermal conductivity of granite[J]. GEOTHERMICS,2020,83:14. |
| APA | Li, Zheng-Wei,Zhang, Yan-Jun,Gong, Yan-Hua,&Zhu, Guo-Qiang.(2020).Influences of mechanical damage and water saturation on the distributed thermal conductivity of granite.GEOTHERMICS,83,14. |
| MLA | Li, Zheng-Wei,et al."Influences of mechanical damage and water saturation on the distributed thermal conductivity of granite".GEOTHERMICS 83(2020):14. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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