Failure modes of basal-ice moraine slopes under combined hydrothermal conditions: laboratory evidence
文献类型：期刊论文
| 作者 | Cao, Jingxuan1,2; Wang, Jiao1,2,3; Cui, Peng1,2,3; Liu, Zhenxing1,4; Yang, Can1,2; Wang, Hao2; Shu, Tao1,2 |
| 刊名 | CATENA
 |
| 出版日期 | 2026-04-01 |
| 卷号 | 265页码:109906 |
| 关键词 | Basal-ice moraine slopes Hydrothermal conditions Laboratory flume modeling Failure modes |
| ISSN号 | 0341-8162 |
| DOI | 10.1016/j.catena.2026.109906 |
| 产权排序 | 3 |
| 文献子类 | Article |
| 英文摘要 | The stability of basal-ice moraine slopes (BIMS) is increasingly threatened by climate warming, posing a significant geohazard in high-altitude regions. The degradation of buried basal ice, coupled with intense rainfall, induces complex thermo-hydro-mechanical (THM) interactions, yet the specific failure mechanisms remain insufficiently understood. This study provides direct experimental evidence using instrumented laboratory flume experiments to investigate the failure characteristics of BIMS under controlled thermal and rainfall conditions. By systematically analyzing volumetric water content, soil pressure, pore water pressure and deformation, we clarify the regulatory role of the ice-soil interface in slope instability. Results demonstrate this interface is the primary control, governing heat transfer and meltwater redistribution. We identify two distinct failure pathways: temperature-driven instability is progressive, evolving from initial slope-toe failure to large-scale misaligned sliding, where rising temperatures accelerate meltwater accumulation. In stark contrast, rainfall-induced instability is abrupt, characterized by rapid slope disintegration and surface flow-slips, with intense rainfall showing the potential to trigger debris flows. These findings elucidate the coupled THM failure mechanisms of BIMS, providing a robust scientific basis for process-based hazard assessment and risk mitigation in cold-region mountainous environments. |
| URL标识 | 查看原文 |
| WOS关键词 | TIBETAN PLATEAU ; CRUST FORMATION ; CLIMATE-CHANGE ; DEBRIS FLOWS ; GLACIER ; DYNAMICS |
| WOS研究方向 | Geology ; Agriculture ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:001690359700001 |
| 出版者 | ELSEVIER |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/220883]  |
| 专题 | 陆地表层格局与模拟院重点实验室_外文论文 |
| 通讯作者 | Wang, Jiao |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Hazards & Engn Resilience, Chengdu 610041, Peoples R China; 3.CAS HEC, China Pakistan Joint Res Ctr Earth Sci, Islamabad 45320, Pakistan; 4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Cao, Jingxuan,Wang, Jiao,Cui, Peng,et al. Failure modes of basal-ice moraine slopes under combined hydrothermal conditions: laboratory evidence[J]. CATENA,2026,265:109906. |
| APA | Cao, Jingxuan.,Wang, Jiao.,Cui, Peng.,Liu, Zhenxing.,Yang, Can.,...&Shu, Tao.(2026).Failure modes of basal-ice moraine slopes under combined hydrothermal conditions: laboratory evidence.CATENA,265,109906. |
| MLA | Cao, Jingxuan,et al."Failure modes of basal-ice moraine slopes under combined hydrothermal conditions: laboratory evidence".CATENA 265(2026):109906. |
入库方式： OAI收割
来源：地理科学与资源研究所
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