Dynamic Evolution of Desiccation Cracks and Their Relationship with the Hydraulic Properties of Expansive Soil
文献类型：期刊论文
| 作者 | Gao, Haodong2,3; An, Ran2,3; Zhang, Xianwei3; Wang, Gang1,3; Liu, Xinyu2; Xu, Yiqing1,3 |
| 刊名 | INTERNATIONAL JOURNAL OF GEOMECHANICS
 |
| 出版日期 | 2024-03-01 |
| 卷号 | 24期号:3页码:12 |
| 关键词 | Desiccation cracking Expansive soil X-ray computed tomography (X-CT) Seepage simulation Hydraulic properties |
| ISSN号 | 1532-3641 |
| DOI | 10.1061/IJGNAI.GMENG-9299 |
| 英文摘要 | The desiccation cracking of expansive soil plays a crucial role in the structural integrity and long-term stability of infrastructure foundations. While the occurrence of surface cracks and shrinkage deformation in expansive soil has been widely acknowledged, limited research has been conducted on the development pattern of internal cracks and their correlation with hydraulic properties. In this study, undisturbed samples of expansive soil were subjected to high-precision X-ray computed tomography scanning, and three-dimensional visualization and quantitative characterization of the cracks within the samples were conducted using the Avizo (version 2022.1) software analysis platform. Additionally, seepage simulations were employed to study the relationship between crack structure and the hydraulic properties of expansive soil. The results indicate that the desiccation process led to a significant increase in the volume content and connectivity of cracks in the expansive soil. Based on their connecting states, the cracks were classified into interconnected and isolated categories. Regression analysis suggests that the degree of cracking in expansive soil is predominantly determined by the interconnected cracks. The initiation, propagation, and coalescence of desiccation cracks substantially augmented the number of flow paths and enhanced the hydraulic conductivity of the soil. This study elucidates the microscopic evolution of desiccation cracking in expansive soil, offering a better understanding of the relationship between the three-dimensional characteristics of crack structure and their hydraulic properties. |
| 资助项目 | National Natural Science Foundation of China[12102312] ; National Natural Science Foundation of China[42177148] ; Institute of Rock and Soil Mechanics, Chinese Academy of Sciences[SKLGME021018] ; Open Fund of State Key Laboratory of Geohazard Prevention and Geoenvironment Protection[SKLGP2021K011] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001142548000026 |
| 出版者 | ASCE-AMER SOC CIVIL ENGINEERS |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/40453]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | An, Ran |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Hefei Univ Technol, Sch Civil & Hydraul Engn, Hefei 230009, 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 | Gao, Haodong,An, Ran,Zhang, Xianwei,et al. Dynamic Evolution of Desiccation Cracks and Their Relationship with the Hydraulic Properties of Expansive Soil[J]. INTERNATIONAL JOURNAL OF GEOMECHANICS,2024,24(3):12. |
| APA | Gao, Haodong,An, Ran,Zhang, Xianwei,Wang, Gang,Liu, Xinyu,&Xu, Yiqing.(2024).Dynamic Evolution of Desiccation Cracks and Their Relationship with the Hydraulic Properties of Expansive Soil.INTERNATIONAL JOURNAL OF GEOMECHANICS,24(3),12. |
| MLA | Gao, Haodong,et al."Dynamic Evolution of Desiccation Cracks and Their Relationship with the Hydraulic Properties of Expansive Soil".INTERNATIONAL JOURNAL OF GEOMECHANICS 24.3(2024):12. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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