The role of discontinuities in the susceptibility, development, and runout of rock avalanches: a review
文献类型：期刊论文
| 作者 | Lan, Hengxing1,2; Zhang, Yixing1; Macciotta, Renato3; Li, Langping1; Wu, Yuming1; Bao, Han4; Peng, Jianbing2 |
| 刊名 | LANDSLIDES
 |
| 出版日期 | 2022-03-17 |
| 页码 | 14 |
| ISSN号 | 1612-510X |
| 关键词 | Discontinuity Rock avalanche Susceptibility Failure development Runout Progressive fragmentation |
| DOI | 10.1007/s10346-022-01868-w |
| 通讯作者 | Lan, Hengxing(lanhx@lreis.ac.cn) ; Li, Langping(lilp@lreis.ac.cn) |
| 英文摘要 | Rock avalanche is one of the most spectacular and catastrophic type of natural hazard phenomena. Those events typically start with a giant rock block or multiple blocks becoming detached from the rock slope, progressively fragmenting and transforming into rapidly moving cohesionless rock debris. Discontinuities are widely distributed in rock masses. Although research on rock avalanche phenomena is extensive, the role of discontinuities in different phases of rock avalanches, including the susceptibility, development, and runout phases, has not been systematically and comprehensively addressed, which has aroused a long-standing controversial issue. In this paper, the effects of discontinuities on the three phases of rock avalanches are systematically reviewed and discussed. The preexisting discontinuities influence not only the detachment of rock masses in the failure process but also their disintegration and propagation during runout. As a precursory factor, discontinuities control the kinematic feasibility of rock slope failure and the rock mass strength and thus control the susceptibility of the rock slope to failure as well as the size and spatial distribution of potential rock slope failure areas. During the development phase, the existing discontinuities will propagate and coalesce, increasing the slope fragmentation and decreasing the resistance to failure, and the kinematics of detachment evolve. It is worth noting that the evolution and failure phase would not happen, or just in moments in an earthquake-triggered events(s) or similar events. During runout, the control of discontinuities on rock avalanches is primarily reflected by shear and progressive fragmentation accompanied by heterogeneous distributions of stress and grain size, efficient energy transfer, and characteristic deposits. Nevertheless, dynamics of rock avalanches is complex, and controversial disputes remain; there is no straightforward conclusion. The inherent geology might play a dominant role in determining their strengthening or weakening effect in the various stages of rock avalanches. Several perspectives on future research are discussed, and approaches for focusing on the challenging research required to better our understanding of the role of discontinuities are suggested. |
| WOS关键词 | 2017 XINMO LANDSLIDE ; DEBRIS AVALANCHE ; LARGE ROCKSLIDES ; DEPOSIT CHARACTERISTICS ; FAILURE-MECHANISM ; NUMERICAL-MODEL ; TRAVEL DISTANCE ; BLOCK SIZE ; SLOPE ; FRAGMENTATION |
| 资助项目 | Second Tibetan Plateau Scientific Expedition and Research (STEP) program[2019QZKK0904] ; National Natural Science Foundation of China[42041006] ; National Natural Science Foundation of China[41927806] ; National Natural Science Foundation of China[41941019] ; National Key R&D Program of China[2019YFC1520601] |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| 出版者 | SPRINGER HEIDELBERG |
| WOS记录号 | WOS:000770212900004 |
| 资助机构 | Second Tibetan Plateau Scientific Expedition and Research (STEP) program ; National Natural Science Foundation of China ; National Key R&D Program of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/172755]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Lan, Hengxing; Li, Langping |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, State Key Lab Resources & Environm Informat Syst, Beijing 100101, Peoples R China 2.Changan Univ, Sch Geol Engn & Geomat, Xian 710064, Peoples R China 3.Univ Alberta, Dept Civil & Environm Engn, Edmonton, AB T6G 1H9, Canada 4.Changan Univ, Sch Highway, Xian 710064, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lan, Hengxing,Zhang, Yixing,Macciotta, Renato,et al. The role of discontinuities in the susceptibility, development, and runout of rock avalanches: a review[J]. LANDSLIDES,2022:14. |
| APA | Lan, Hengxing.,Zhang, Yixing.,Macciotta, Renato.,Li, Langping.,Wu, Yuming.,...&Peng, Jianbing.(2022).The role of discontinuities in the susceptibility, development, and runout of rock avalanches: a review.LANDSLIDES,14. |
| MLA | Lan, Hengxing,et al."The role of discontinuities in the susceptibility, development, and runout of rock avalanches: a review".LANDSLIDES (2022):14. |
入库方式： OAI收割
来源：地理科学与资源研究所
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