Gas permeability evolution of granite under confining pressure unloading tests
文献类型：期刊论文
| 作者 | Hu, Dawei2,3; Li, Jun2,3; Zhou, Hui2,3; Lu, Jingjing2,3; Ma, Dongdong2,3; Zhang, Fan1 |
| 刊名 | EUROPEAN JOURNAL OF ENVIRONMENTAL AND CIVIL ENGINEERING
 |
| 出版日期 | 2021 |
| 卷号 | 25期号:10页码:1915-1928 |
| 关键词 | Confining pressure unloading gas permeability stress path deformation mechanism permeability evolution EDZ |
| ISSN号 | 1964-8189 |
| DOI | 10.1080/19648189.2019.1610073 |
| 英文摘要 | Tunnel excavations in rock usually cause initial stress release, which is different from the stress path in classical triaxial compression tests. To analyze the permeability variations in excavation disturbed zone, two different stress paths, e.g. classical triaxial compression and confining pressure unloading, are applied on granite, and the permeability at different damage levels is measured using gas as transport medium. The differences in deformation and failure mechanism and their impacts on gas permeability variation are discussed. The test results show that lateral deformation of samples in confining pressure unloading tests is obviously larger than that in classical triaxial compression tests. Unlike the permeability decrease-increase transition in classical triaxial compression tests, the permeability in confining pressure unloading tests shows an overall progressively increase trend. The permeability in both tests increases significantly near failure and achieves the same order of magnitude. The differences in permeability evolutions under the two stress paths are directly attributed to their different deformation mechanisms. The test results could provide a new understanding of permeability properties during the underground excavation. |
| 资助项目 | National Key R&D Program of China[2018YFC0809601] ; National Science Foundation of China[51779252] ; National Science Foundation of China[51579093] ; Key R&D Program of Hubei[2017AAA128] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000756977600011 |
| 出版者 | TAYLOR & FRANCIS LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/34475]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Hu, Dawei |
| 作者单位 | 1.Hubei Univ Technol, Sch Civil Engn Architecture & Environm, Wuhan, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hu, Dawei,Li, Jun,Zhou, Hui,et al. Gas permeability evolution of granite under confining pressure unloading tests[J]. EUROPEAN JOURNAL OF ENVIRONMENTAL AND CIVIL ENGINEERING,2021,25(10):1915-1928. |
| APA | Hu, Dawei,Li, Jun,Zhou, Hui,Lu, Jingjing,Ma, Dongdong,&Zhang, Fan.(2021).Gas permeability evolution of granite under confining pressure unloading tests.EUROPEAN JOURNAL OF ENVIRONMENTAL AND CIVIL ENGINEERING,25(10),1915-1928. |
| MLA | Hu, Dawei,et al."Gas permeability evolution of granite under confining pressure unloading tests".EUROPEAN JOURNAL OF ENVIRONMENTAL AND CIVIL ENGINEERING 25.10(2021):1915-1928. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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