KMS Institute of Mountain Hazards and Environment,CAS
| Characterizing the spatial distribution and fundamental controls of landslides in the three gorges reservoir area, China | |
| Li, Songlin1; Xu, Qiang1; Tang, Minggao1; Iqbal, Javed2,3; Liu, Jie1; Zhu, Xing1; Liu, Fangzhou4; Zhu, Dongxue1 | |
| Corresponding Author | Li, Songlin(lsl68@foxmail.com) |
| 2019-09-01 | |
| Source Publication | BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
 |
| ISSN | 1435-9529 |
| Volume | 78Issue:6Pages:4275-4290 |
| Abstract | A comprehensive field investigation and analysis of the spatial distribution of landslides was conducted in the Three Gorges Reservoir Area (TGRA) along the Yangtze River and its first-order tributaries. A landslide inventory for this area was prepared using regional-local geological investigations and other available information. The analysis of the extensive inventory data reveals that the occurrence of landslides is mainly affected by four primary factors: (1) Lithology-the highest incidence of landslides is associated with the lithological combination of marl and shale intercalated with mudstone (MSM), and a number of landslides occurred in an area dominated by sandstone and mudstone intercalated with shale and coal seams (SMSC), which cover a major part (approximately 71%) of the bank slopes; (2) Structure-slope structure fundamentally controls the development of the sliding zone and the mechanism of formation of landslides occurring on the same lithological combinations at subregional scales. Landslide concentrations in consequent slopes are approximately 5-17 times greater than those of reverse slopes and diagonal slopes; (3) Topography-landslides are particularly abundant between elevations of 100 m and 600 m. The elevations of the headscarps of the landslides gradually decrease from the head to the tail of the reservoir due to the topography, and almost all of the toes of the landslides are below the highest historical floodwater level. The analysis of the correlation between landslide occurrence and hillslope gradients shows that 50% of all landslides occurred on slopes between 10 degrees and 15 degrees, despite slopes in this range representing only 30% of the total hillslope gradients; and (4) Water level fluctuation and precipitation-the fluctuation of reservoir water level exerts a fundamental effect that controls the occurrence and reactivation of landslides during the period of initial impoundment, whereas the precipitation becomes even more important than water level fluctuation after the first impoundment at 175 m above sea level. In addition, the comprehensive analysis performed in this study provides broad insight into the landslide distribution in the TGRA. This work will improve our understanding of the role of morphological and geological conditions that affect the occurrence of landslides, which may provide useful guidance for regional risk assessment and landslide susceptibility studies. |
| Keyword | Landslides Three gorges reservoir area Lithology Structure Water level fluctuation |
| DOI | 10.1007/s10064-018-1404-5 |
| Indexed By | SCI |
| WOS Keyword | SUPPORT VECTOR MACHINE ; LOGISTIC-REGRESSION ; SLOPE STABILITY ; DAM-RESERVOIR ; DECISION TREE ; SUSCEPTIBILITY ; DEFORMATION ; MECHANISM ; RIVER ; HAZARD |
| Language | 英语 |
| Funding Project | Geological Hazard Prevention Project of Three Gorges[000121 2015C C60 005] ; National Basic Research Program of China[2013CB733202] ; National Basic Research Program of China[2013CB733206] ; State Key Laboratory of Geohazard Prevention and Geoenvironment Protection[SKLGP2015Z008] |
| WOS Research Area | Engineering ; Geology |
| WOS Subject | Engineering, Environmental ; Engineering, Geological ; Geosciences, Multidisciplinary |
| WOS ID | WOS:000482240400029 |
| Funding Organization | Geological Hazard Prevention Project of Three Gorges ; National Basic Research Program of China ; State Key Laboratory of Geohazard Prevention and Geoenvironment Protection |
| Publisher | SPRINGER HEIDELBERG |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imde.ac.cn/handle/131551/24213 |
| Collection | 中国科学院水利部成都山地灾害与环境研究所 |
| Corresponding Author | Li, Songlin |
| Affiliation | 1.Chengdu Univ Technol, State Key Lab Geohazard Prevent & Geoenvironm Pro, Chengdu 610059, Sichuan, Peoples R China 2.Abbottabad Univ Sci & Technol, Dept Earth Sci, Abbottabad, Pakistan 3.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Sichuan, Peoples R China 4.Georgia Inst Technol, Sch Civil & Environm Engn, Atlanta, GA 30332 USA |
| Recommended Citation GB/T 7714 | Li, Songlin,Xu, Qiang,Tang, Minggao,et al. Characterizing the spatial distribution and fundamental controls of landslides in the three gorges reservoir area, China[J]. BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,2019,78(6):4275-4290. |
| APA | Li, Songlin.,Xu, Qiang.,Tang, Minggao.,Iqbal, Javed.,Liu, Jie.,...&Zhu, Dongxue.(2019).Characterizing the spatial distribution and fundamental controls of landslides in the three gorges reservoir area, China.BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,78(6),4275-4290. |
| MLA | Li, Songlin,et al."Characterizing the spatial distribution and fundamental controls of landslides in the three gorges reservoir area, China".BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT 78.6(2019):4275-4290. |
| Files in This Item: | ||||||
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| Li2018_Article_Chara（4572KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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