Permeability changes in fractured Tamusu mudstone in the context of radioactive waste disposal
文献类型：期刊论文
| 作者 | Yu, Hongdan1; Lu, Chen1,2; Chen, Weizhong1,3; Li, Honghui4 |
| 刊名 | BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
 |
| 出版日期 | 2021-10-01 |
| 卷号 | 80期号:10页码:7945-7957 |
| ISSN号 | 1435-9529 |
| 关键词 | Fractured Tamusu mudstone Permeability Thermal effect Mechanical effect Self-sealing |
| DOI | 10.1007/s10064-021-02445-6 |
| 英文摘要 | Tamusu mudstone, located in Inner Mongolia, is being recognized to be the potential host formation in deep HLW disposal across China. This paper describes diverse laboratory experiments performed using the fractured Tamusu mudstone, with concern to the study of the combined mechanical and thermal effects on its hydraulic properties, as well as its self-sealing effect. A single rough fracture is generated down the sample diameter direction before the sample's installation. Considering a heating-cooling cycle, the evolution of the samples' hydraulic properties under different stress conditions has been monitored. The hydraulic conductivity is proved to be not only related to the temperature-induced water viscosity and density variation but also the change of stress state. At the same thermal conditions, the increase of confining pressure (or deviatoric stress) may weaken the flow capacity of the fractures and thus reduce the permeability. The non-coincidence for the curve of permeability versus temperature at the heating and cooling stage indicates that the permeability alterations in the fractures are irreversible. Fracture zone changes were observed by X-ray computer tomography (CT) before and after the tests. The self-sealing behavior, which may be beneficial from high confining pressure, was detected for fractured Tamusu mudstone. Morphologies of fracture surfaces were detected by the 3D scanning technique, which shows that the fracture surface roughness, due to the alteration of asperity contacts and void spaces under high stress, may take an important part of the responsibility to the change of permeability. |
| 资助项目 | National Natural Science Foundation of China[51979266] ; National Natural Science Foundation of China[51879258] ; National Natural Science Foundation of China[51991392] |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| 出版者 | SPRINGER HEIDELBERG |
| WOS记录号 | WOS:000698117200001 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/27941]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Yu, Hongdan |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Shandong Univ, Res Ctr Geotech & Struct Engn, Jinan, Peoples R China 4.China Inst Radiat Protect, CNNC Key Lab Geol, Disposal High Level Radioact Waste, Taiyuan 030006, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yu, Hongdan,Lu, Chen,Chen, Weizhong,et al. Permeability changes in fractured Tamusu mudstone in the context of radioactive waste disposal[J]. BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,2021,80(10):7945-7957. |
| APA | Yu, Hongdan,Lu, Chen,Chen, Weizhong,&Li, Honghui.(2021).Permeability changes in fractured Tamusu mudstone in the context of radioactive waste disposal.BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,80(10),7945-7957. |
| MLA | Yu, Hongdan,et al."Permeability changes in fractured Tamusu mudstone in the context of radioactive waste disposal".BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT 80.10(2021):7945-7957. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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