Deformation characteristics and reactivation mechanism of a superlarge accumulated ancient landslide triggered by mining excavation and rainfall
文献类型：期刊论文
| 作者 | Wang, Chengtang4; Liang, Junyan4; Wang, Hao4; Wang, Haibin4; Yang, Yanshuang1; Chen, Yu2; Chen, Lang3 |
| 刊名 | LANDSLIDES
 |
| 出版日期 | 2024-10-10 |
| 页码 | 17 |
| 关键词 | Open-pit mine ancient landslides Deformation characteristics Reactivation mechanism Rainfall Mining excavation |
| ISSN号 | 1612-510X |
| DOI | 10.1007/s10346-024-02357-y |
| 英文摘要 | An ancient landslide located in Xichang, China, that was reactivated by mining excavation and rainfall was investigated in this study. The volume of the reactivated landslide was approximately 1200 x 104 m3, thus posing a major threat to the mining area's safety. Field surveys, drilling, on-site monitoring, laboratory studies, and numerical analyses were performed to investigate the landslide deformation characteristics and reactivation mechanism. The reactivated landslide was divided into four zones: the leading-edge collapse, the sliding, the uplifting, and the traction sliding zones. X-ray diffraction and ring shear tests indicate that the sliding zone soil exhibits significant strength-weakening characteristics when exposed to water, and the residual cohesion and internal friction angle decrease by 26.9% and 28.9%, respectively, as the moisture content increases from 15 to 24%. Additionally, a three-dimensional numerical simulation was conducted to quantitatively analyze the stability evolution of the landslide. The results showed that the topographic, stratigraphic lithology, and sliding zone soil properties provided the basic conditions for landslide formation, while mining excavation and concentrated rainfall triggered landslide reactivation. Furthermore, a conceptual model characterizing the reactivation process was constructed, and the reactivation process was divided into five stages: leading-edge collapse, sliding, extrusion and bulging, deformation expansion, and accelerated creep deformation. This study provides a basis for understanding the reactivation mechanism of ancient open-pit mine landslides. |
| 资助项目 | Key Laboratory of Intelligent Health Perception and Ecological Restoration of Rivers and Lakes, Ministry of Education, Hubei University of Technology[HGKFYBO7] ; National Nature Science Foundation of China[42207222] ; Key Technologies for Accurate Diagnosis and Intelligent Prevention and Control of Slope Hazards in Open pit Mines, 181 Major R&D projects of Metallurgical Corporation of China Ltd. |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001329816800003 |
| 出版者 | SPRINGER HEIDELBERG |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/42754]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Yang, Yanshuang |
| 作者单位 | 1.Hubei Univ Technol, Key Lab Intelligent Hlth Percept & Ecol Restorat R, Minist Educ, Wuhan 430068, Hubei, Peoples R China 2.Sichuan Bur Geol & Mineral Resources, Sichuan Prov Geol Brigade 9, Deyang 618000, Sichuan, Peoples R China 3.Xichang Min Chongqing Iron & Steel Co Ltd, China Baowu Steel Grp, Xichang 615000, Sichuan, Peoples R China 4.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Chengtang,Liang, Junyan,Wang, Hao,et al. Deformation characteristics and reactivation mechanism of a superlarge accumulated ancient landslide triggered by mining excavation and rainfall[J]. LANDSLIDES,2024:17. |
| APA | Wang, Chengtang.,Liang, Junyan.,Wang, Hao.,Wang, Haibin.,Yang, Yanshuang.,...&Chen, Lang.(2024).Deformation characteristics and reactivation mechanism of a superlarge accumulated ancient landslide triggered by mining excavation and rainfall.LANDSLIDES,17. |
| MLA | Wang, Chengtang,et al."Deformation characteristics and reactivation mechanism of a superlarge accumulated ancient landslide triggered by mining excavation and rainfall".LANDSLIDES (2024):17. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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