Physical Model Experiments on Water Infiltration and Failure Modes in Multi-Layered Slopes under Heavy Rainfall
文献类型：期刊论文
| 作者 | Tang, Junfeng2; Taro, Uchimura2; Huang, Dong1; Xie, Jiren3; Tao, Shangning2 |
| 刊名 | APPLIED SCIENCES-BASEL
 |
| 出版日期 | 2020-05-01 |
| 卷号 | 10期号:10页码:21 |
| 关键词 | unsaturated soil capillary barrier multi-layer slope slope failure |
| DOI | 10.3390/app10103458 |
| 通讯作者 | Tao, Shangning(to.s.670@ms.saitama-u.ac.jp) |
| 英文摘要 | Featured Application Authors are encouraged to provide a concise description of the specific application or a potential application of the work. This section is not mandatory. Abstract To assess the influence of an intermediate coarse layer on the slope stability during heavy rainfall, knowledge about water movement and how slope failure occurs is important. To clarify the characteristics of water infiltration in a multi-layered slope and assess its influence on the slope failure modes, eight groups of physical slope models were investigated. It was found that the unsaturated hydraulic conductivity in the coarse layer (5.54 x 10(-6) cm/s) was much lower than that of the fine layer (1.08 x 10(-4) cm/s), which resulted in the capillary barrier working at a lower water content. Intermediate coarse layers embedded between finer ones may initially confine the infiltration within the overlying finer layers, delaying the infiltration and eventually inducing a lateral flow diversion in the inclined slope. Two different failure modes occurred in the model experiments: surface sliding occurred at the toe in the single-layer slope group and piping occurred at the toe in the multi-layered slope as the rainfall water accumulated, was diverted along the interface, and then broke through in the downslope direction of the intermediate coarse layer. The lateral flow diversion caused by the capillary barrier and the tilt angle may be the major factors influencing the difference of the failure modes. The result also revealed that the coarser layers may have negative effects on the slope stability. |
| WOS关键词 | LOOSE GRANULAR DEPOSITS ; CAPILLARY BARRIERS ; SOIL ; FLOWSLIDES ; LANDSLIDES ; MECHANISMS ; INITIATION ; SURFACE ; COVERS ; RUNOUT |
| 资助项目 | Japanese Government ; Sichuan Science and Technology Program[2018JY0613] ; Japan Society for the Promotion of Science (JSPS) ; Japan Society for the Promotion of Science for Young Scientists |
| WOS研究方向 | Chemistry ; Engineering ; Materials Science ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000541440000119 |
| 出版者 | MDPI |
| 资助机构 | Japanese Government ; Sichuan Science and Technology Program ; Japan Society for the Promotion of Science (JSPS) ; Japan Society for the Promotion of Science for Young Scientists |
| 源URL | [http://ir.imde.ac.cn/handle/131551/35094]  |
| 专题 | 中国科学院水利部成都山地灾害与环境研究所 |
| 通讯作者 | Tao, Shangning |
| 作者单位 | 1.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China 2.Saitama Univ, Dept Civil & Environm Engn, Saitama 3388570, Japan 3.Cent South Univ, Dept Civil Engn, Changsha 410012, Peoples R China |
| 推荐引用方式 GB/T 7714 | Tang, Junfeng,Taro, Uchimura,Huang, Dong,et al. Physical Model Experiments on Water Infiltration and Failure Modes in Multi-Layered Slopes under Heavy Rainfall[J]. APPLIED SCIENCES-BASEL,2020,10(10):21. |
| APA | Tang, Junfeng,Taro, Uchimura,Huang, Dong,Xie, Jiren,&Tao, Shangning.(2020).Physical Model Experiments on Water Infiltration and Failure Modes in Multi-Layered Slopes under Heavy Rainfall.APPLIED SCIENCES-BASEL,10(10),21. |
| MLA | Tang, Junfeng,et al."Physical Model Experiments on Water Infiltration and Failure Modes in Multi-Layered Slopes under Heavy Rainfall".APPLIED SCIENCES-BASEL 10.10(2020):21. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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