Probabilistic seismic landslide hazard assessment: a case study in Tianshui, Northwest China
文献类型：期刊论文
| 作者 | Wang Tao; Liu Jia-mei; Shi Ju-song; Gao Meng-tan; Wu Shu-ren |
| 刊名 | JOURNAL OF MOUNTAIN SCIENCE
 |
| 出版日期 | 2020 |
| 卷号 | 17期号:1页码:173-190 |
| 关键词 | Probabilistic analysis Seismic hazard Newmark's method Landslides Displacement model Hazard assessment |
| ISSN号 | 1672-6316 |
| DOI | 10.1007/s11629-019-5618-1 |
| 文献子类 | Article |
| 英文摘要 | Probabilistic analysis in the field of seismic landslide hazard assessment is often based on an estimate of uncertainties of geological, geotechnical, geomorphological and seismological parameters. However, real situations are very complex and thus uncertainties of some parameters such as water content conditions and critical displacement are difficult to describe with accurate mathematical models. In this study, we present a probabilistic methodology based on the probabilistic seismic hazard analysis method and the Newmark's displacement model. The Tianshui seismic zone (105 degrees 00 '-106 degrees 00 ' E, 34 degrees 20 '-34 degrees 40 ' N) in the northeastern Tibetan Plateau were used as an example. Arias intensity with three standard probabilities of exceedance (63%, 10%, and 2% in 50 years) in accordance with building design provisions were used to compute Newmark displacements by incorporating the effects of topographic amplification. Probable scenarios of water content condition were considered and three water content conditions (dry, wet and saturated) were adopted to simulate the effect of pore-water on slope. The influence of 5 cm and 10 cm critical displacements were investigated in order to analyze the sensitivity of critical displacement to the probabilities of earthquake-induced landslide occurrence. The results show that water content in particular, have a great influence on the distribution of high seismic landslide hazard areas. Generally, the dry coverage analysis represents a lower bound for susceptibility and hazard assessment, and the saturated coverage analysis represents an upper bound to some extent. Moreover, high seismic landslide hazard areas are also influenced by the critical displacements. The slope failure probabilities during future earthquakes with critical displacements of 5 cm can increase by a factor of 1.2 to 2.3 as compared to that of 10 cm. It suggests that more efforts are required in order to obtain reasonable threshold values for slope failure. Considering the probable scenarios of water content condition which is varied with seasons, seismic landslide hazard assessments are carried out for frequent, occasional and rare earthquake occurrences in the Tianshui region, which can provide a valuable reference for landslide hazard management and infrastructure design in mountainous seismic zones. |
| 电子版国际标准刊号 | 1993-0321 |
| 语种 | 英语 |
| WOS记录号 | WOS:000512076900013 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/46726]  |
| 专题 | Journal of Mountain Science_Journal of Mountain Science-2020_Vol17 No.1 |
| 推荐引用方式 GB/T 7714 | Wang Tao,Liu Jia-mei,Shi Ju-song,et al. Probabilistic seismic landslide hazard assessment: a case study in Tianshui, Northwest China[J]. JOURNAL OF MOUNTAIN SCIENCE,2020,17(1):173-190. |
| APA | Wang Tao,Liu Jia-mei,Shi Ju-song,Gao Meng-tan,&Wu Shu-ren.(2020).Probabilistic seismic landslide hazard assessment: a case study in Tianshui, Northwest China.JOURNAL OF MOUNTAIN SCIENCE,17(1),173-190. |
| MLA | Wang Tao,et al."Probabilistic seismic landslide hazard assessment: a case study in Tianshui, Northwest China".JOURNAL OF MOUNTAIN SCIENCE 17.1(2020):173-190. |
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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