Analysis of historical evolution characteristics and collapse process on July 18, 2023, of a dangerous rock mass at Guanyinyan in Baoxing County, Sichuan Province, China
文献类型：期刊论文
| 作者 | Wang, Xing2,3; Fu, Xiaodong2,3; Wu, Kai4; Ding, Haifeng2,3; Du, Wenjie2,3; Sheng, Qian2,3; Chen, Jian1,2,3 |
| 刊名 | LANDSLIDES
 |
| 出版日期 | 2024-03-13 |
| 页码 | 17 |
| 关键词 | Rock collapse Lushan earthquake Rainfall Evolutionary process FDEM Rock deterioration |
| ISSN号 | 1612-510X |
| DOI | 10.1007/s10346-024-02239-3 |
| 英文摘要 | On July 18, 2023, on the K54 + 670 similar to K54 + 700 section of G351 National Highway in Baoxing County, Ya'an City, Sichuan Province, the rock mass (30 degrees 25' 4.8 '' N, 102 degrees 50' 21.84 '' E) located at the entrance of Leying in the Guanyinyan Open-cut Tunnel and affected by Lushan earthquakes and heavy rainfall factors suffered a rock mass collapse accident (hereinafter referred to as the Guanyinyan collapse, or collapse). It is a typical delayed rock mass collapse event that occurs under the influences of historical earthquake sequences and rainy season rainfall. The collapsed area has the maximum thickness close to 2 m, and a volume of about 1500-2000 m(3). Some collapsed rocks have rolled into the interior of the tunnel and the riverbed, and boulders with a diameter of nearly 5 m have been found in the river channel. Most of the collapsed material accumulates on the road, approximately 1260 m(3), burying some 30 m of the highway, severely affecting the normal use thereof. This article used a detailed field investigation, unmanned aerial vehicle (UAV) photogrammetry, historical image comparison, and numerical simulation methods to gain a deeper understanding of the engineering geology and historical earthquake situation in the study area. A three-dimensional site model was also established to identify the rock mass structural joints and accumulation conditions in the collapsed area, and the deterioration and fracture factors and historical evolution process of the dangerous rock mass were briefly analyzed, Finally, a comparative analysis was conducted between the simulated results using the three-dimensional finite discrete element method (FDEM) and the dynamic process as evinced by of real-time video footage. The collapse mainly experienced a local instability stage, stress adjustment stage, and overall collapse-accumulation stage. The further understanding of its motion characteristics and energy evolution can provide a basis for subsequent protection design and also a valuable experience for similar research in the region. |
| 资助项目 | Youth Innovation Promotion Association of the Chinese Academy of Sciences |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001181278000001 |
| 出版者 | SPRINGER HEIDELBERG |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/40822]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Fu, Xiaodong |
| 作者单位 | 1.China Pakistan Joint Res Ctr Earth Sci CAS HEC, Islamabad, Pakistan 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 4.Survey Design & Res Inst Ltd, Sichuan Highway Planning, Chengdu 610041, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Xing,Fu, Xiaodong,Wu, Kai,et al. Analysis of historical evolution characteristics and collapse process on July 18, 2023, of a dangerous rock mass at Guanyinyan in Baoxing County, Sichuan Province, China[J]. LANDSLIDES,2024:17. |
| APA | Wang, Xing.,Fu, Xiaodong.,Wu, Kai.,Ding, Haifeng.,Du, Wenjie.,...&Chen, Jian.(2024).Analysis of historical evolution characteristics and collapse process on July 18, 2023, of a dangerous rock mass at Guanyinyan in Baoxing County, Sichuan Province, China.LANDSLIDES,17. |
| MLA | Wang, Xing,et al."Analysis of historical evolution characteristics and collapse process on July 18, 2023, of a dangerous rock mass at Guanyinyan in Baoxing County, Sichuan Province, China".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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