Experimental Study on Landslides in Terraced Fields in the Chinese Loessial Region under Extreme Rainfall
文献类型：期刊论文
| 作者 | Wen, Yongfu1; Gao, Peng2,3; Mu, Xingmin2,3; Li, Mengzhen1; Su, Yongjun1; Wang, Haixing1 |
| 刊名 | WATER
 |
| 出版日期 | 2021-02-01 |
| 卷号 | 13期号:3页码:21 |
| 关键词 | laboratory model test extreme rainfall rill erosion shallow landslides deep lip surface safety factor |
| DOI | 10.3390/w13030270 |
| 通讯作者 | Gao, Peng(gaopeng@ms.iswc.ac.cn) |
| 英文摘要 | Due to the development of the scale of tractor-ploughed terraces, terraces have been increasing in number, while global climate change is causing frequent extreme rainfall events in the Loess Plateau, resulting in many terrace landslides. To study the mechanism and process of shallow landslides and deep slip surface of terraces induced by extreme rainfall in loess hill and gully area, we conducted a laboratory model test of a terrace under artificial rainfall and used the Swedish arc strip method. The research results are as follows. The mechanism of shallow landslides in terraces is rill erosion accelerating rainfall infiltration, suspending the slope, and increasing its bulk density. The destruction process of shallow landslides can be roughly divided into six processes, and the earth volume of the landslide is 0.24 m(3). The mechanism of the deep sliding surface in terraces occurs under the combined action of water erosion and gravity erosion. The soil moisture content increases, which decreases the anti-sliding moment and increases the sliding moment, and the safety factor becomes less than the allowable limit for terraces. The deep sliding deformation area of the terrace was 0 similar to 1.0 m below the slope surface, slip surface radius was 1.43 m, the slip surface angle was 92 degrees, and the deep sliding surface began to form earlier than terraced shallow landslides. The displacement of the characteristic points increased from the slope top, to the slope center, and to the slope foot, with maximum displacements of 40.3, 15.5, and 6.0 mm, respectively. |
| 资助项目 | National Key Scientific Research Project[2016YFC0501707] |
| WOS研究方向 | Environmental Sciences & Ecology ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000615627900001 |
| 出版者 | MDPI |
| 资助机构 | National Key Scientific Research Project |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/136104]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Gao, Peng |
| 作者单位 | 1.Hebei Univ Water Resources & Elect Engn, Dept Hydraul Engn, Cangzhou 061001, Peoples R China 2.Northwest A&F Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Xianyang 712100, Peoples R China 3.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Xianyang 712100, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wen, Yongfu,Gao, Peng,Mu, Xingmin,et al. Experimental Study on Landslides in Terraced Fields in the Chinese Loessial Region under Extreme Rainfall[J]. WATER,2021,13(3):21. |
| APA | Wen, Yongfu,Gao, Peng,Mu, Xingmin,Li, Mengzhen,Su, Yongjun,&Wang, Haixing.(2021).Experimental Study on Landslides in Terraced Fields in the Chinese Loessial Region under Extreme Rainfall.WATER,13(3),21. |
| MLA | Wen, Yongfu,et al."Experimental Study on Landslides in Terraced Fields in the Chinese Loessial Region under Extreme Rainfall".WATER 13.3(2021):21. |
入库方式： OAI收割
来源：地理科学与资源研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。