Dynamic evolution of three-dimensional cracks in expansive soil under wet-dry cycles: insights from resistivity monitoring
文献类型：期刊论文
| 作者 | Dai, Zhangjun1; Guo, Jianhua1,2,3; Zhong, Kun2,3; Tong, Kaiwen1,2; Li, Shichang1,2; Huang, Kang1,2; Chen, Shanxiong1 |
| 刊名 | BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
 |
| 出版日期 | 2024-08-01 |
| 卷号 | 83期号:8页码:27 |
| 关键词 | Expansive soil Crack development Wet-dry cycles Moisture migration Resistivity monitoring |
| ISSN号 | 1435-9529 |
| DOI | 10.1007/s10064-024-03812-9 |
| 英文摘要 | This study investigates the dynamic evolution of cracks in expansive soil under varying wet-dry cycles, employing a self-developed three-dimensional spatiotemporal crack evolution model testing system. The research includes experiments, spatial moisture migration analysis, resistivity monitoring, and crack distribution inference to elucidate the crack development mechanisms. The findings reveal distinct stages in moisture evaporation at different soil depths, characterized by initiation, stability, deceleration, and residual phases. The influence of wet-dry cycles on evaporation rates is pronounced, particularly in deep soil layers. Resistivity changes in expansive soil during moisture evaporation display specific phases, demonstrating their potential to characterize crack development. The study validates the feasibility of assessing crack development through soil resistivity changes. Crack formation initiates at weak points on the soil surface, with subsequent elongation and secondary crack development, resulting in a crack network. Further moisture evaporation and volume shrinkage widen cracks, while wetting leads to crack healing. Total crack length, average width, and area crack ratio decrease exponentially with soil depth, but increase at different depths with more wet-dry cycles. Volume crack ratio initially rises and then stabilizes, while volume shrinkage capacity diminishes until equilibrium. Wet-dry cycles promote crack development, modifying particle arrangements. This research underscores that soil cracking and crack development result from the evolving balance of moisture-induced stresses in space, stemming from non-uniform moisture distribution. In conclusion, this study sheds light on crack development mechanisms in expansive soil under wet-dry cycles, offering valuable insights for soil engineering and geotechnical applications. |
| 资助项目 | National Natural Science Foundation of China[42172308] ; Youth Innovation Promotion Association CAS[2022331] ; China Postdoctoral Science Foundation[2023M740368] ; Key Research and Development Program of Hubei Province[2022BAA036] ; Science and Technology Research and Development Program of China State Rail-way Group Co., Ltd.[J2022G002] |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001264780700001 |
| 出版者 | SPRINGER HEIDELBERG |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/41896]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Guo, Jianhua |
| 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.Changjiang Inst Survey Planning Design & Res Co Lt, Wuhan 430010, Peoples R China |
| 推荐引用方式 GB/T 7714 | Dai, Zhangjun,Guo, Jianhua,Zhong, Kun,et al. Dynamic evolution of three-dimensional cracks in expansive soil under wet-dry cycles: insights from resistivity monitoring[J]. BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,2024,83(8):27. |
| APA | Dai, Zhangjun.,Guo, Jianhua.,Zhong, Kun.,Tong, Kaiwen.,Li, Shichang.,...&Chen, Shanxiong.(2024).Dynamic evolution of three-dimensional cracks in expansive soil under wet-dry cycles: insights from resistivity monitoring.BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,83(8),27. |
| MLA | Dai, Zhangjun,et al."Dynamic evolution of three-dimensional cracks in expansive soil under wet-dry cycles: insights from resistivity monitoring".BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT 83.8(2024):27. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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