Hydro-mechanical degradation and crack evolution in undisturbed loess induced by multiple wet-dry cycle paths
文献类型：期刊论文
| 作者 | Chang, Zhou2,4; Yan, Changgen2,4; Lan, Hengxing1,3; Shi, Yuling1; Bao, Han2,4; An, Ning2; Jia, Zhuolong2 |
| 刊名 | BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
 |
| 出版日期 | 2025-11-12 |
| 卷号 | 84期号:12页码:588 |
| 关键词 | Loess Dry-wet cycle path Hydro-mechanical properties Crack evolution Prediction function |
| ISSN号 | 1435-9529 |
| DOI | 10.1007/s10064-025-04561-z |
| 产权排序 | 2 |
| 文献子类 | Article |
| 英文摘要 | The China Loess Plateau suffers severe soil erosion exacerbated by dry-wet cycles, negatively impacting the ecological environment. While previous studies have examined the effects of these cycles on loess, the specific responses to multiple cycle paths remain incomplete. This study evaluates the effects of four distinct dry-wet cycle paths on hydro-mechanical properties of undisturbed loess. Response surface methodology (RSM) analyzed the interaction of cycle number, cycle amplitude, and lower-bound water content on hydro-mechanical deterioration. An improved degradation model evaluated the impact of multiple cycle paths. Statistical analysis linked crack evolution to hydro-mechanical deterioration, enabling a crack-based regression prediction model. Results show significant hydro-mechanical degradation during the initial six cycles, followed by stabilization. Maximum degradation in cohesion and internal friction angle reached 27.63% and 9.88%, respectively, while the saturated permeability coefficient increased by up to 99.1%. Higher lower-bound water content reduced deterioration, whereas increased amplitude heightened it. Both RSM and degradation models revealed the greater influence of lower-bound water content on deterioration, with a coupling effect among the cycle paths. The degradation model accurately captures cohesive deterioration under multiple paths. Dry-wet cycles increased the crack ratio, length, width, and connectivity, with variations influenced by the specific cycle path. A multivariate regression model effectively related crack parameters to cohesion, internal friction angle, and permeability, demonstrating strong predictive capability. These findings enhance the understanding of dry-wet cycle effects on loess and provide valuable insights for predicting hydro-mechanical deterioration in various hydrological environments. |
| URL标识 | 查看原文 |
| WOS关键词 | DESICCATION ; BEHAVIOR |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001612333600005 |
| 出版者 | SPRINGER HEIDELBERG |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/217663]  |
| 专题 | 资源与环境信息系统国家重点实验室_外文论文 |
| 通讯作者 | Yan, Changgen |
| 作者单位 | 1.Changan Univ, Sch Geol Engn & Geomat, Xian 710064, Shaanxi, Peoples R China; 2.Changan Univ, Sch Highway, Middle Sect South Ring Rd, Xian 710064, Shaanxi, Peoples R China; 3.Chinese Acad Sci, State Key Lab Resources & Environm Informat Syst, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China; 4.Xian Key Lab Geotech Engn Green & Intelligent Tran, Xian, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chang, Zhou,Yan, Changgen,Lan, Hengxing,et al. Hydro-mechanical degradation and crack evolution in undisturbed loess induced by multiple wet-dry cycle paths[J]. BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,2025,84(12):588. |
| APA | Chang, Zhou.,Yan, Changgen.,Lan, Hengxing.,Shi, Yuling.,Bao, Han.,...&Jia, Zhuolong.(2025).Hydro-mechanical degradation and crack evolution in undisturbed loess induced by multiple wet-dry cycle paths.BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,84(12),588. |
| MLA | Chang, Zhou,et al."Hydro-mechanical degradation and crack evolution in undisturbed loess induced by multiple wet-dry cycle paths".BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT 84.12(2025):588. |
入库方式： OAI收割
来源：地理科学与资源研究所
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