Abstract
On the basis of research and analysis of the landslide system of the Three Gorges Reservoir area, this paper systematically analyzes and studies the temporal–spatial distribution law of landslides of this reservoir area and their impacts on environment of this area. The paper puts forward that the temporal–spatial distribution of this area’s landslides is mainly controlled by lithologic characters of strata, geological structure, valley landscape, and types of bank slope structure; landslide deformation and failure have such characteristics as simultaneity, laggardness, cyclical instability, and stage. Besides, the paper systematically analyzes and studies the main impacts of landslide on environment and points out that landslides and collapses will bring about relatively serious impacts on relocation and layout of cities and towns along the banks. These impacts mainly include the increase of relocation investment, number of migrants, and compensation for losses. Much attention and evaluation should be paid to the impacts of Xintan Landslide and Lianziya Landslide—large landslides near the Dam—on the construction and safety of the Three Gorges Project. However, landslides have relatively small impacts on shipping and reservoir capacity. The above-mentioned research is of great guiding significance for the construction of the Three Georges Project, planning and construction of cities and towns along the banks, and protection of geological environment.
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Acknowledgments
The study was supported by National Natural Sciences Foundation of China (No: 40672182). In the process of conducting this research programme, Wang Shangqing, the researcher of the Rockfall and Landslide Research Institute of The Three Gorges University and Yan Xueqing, a senior engineer, have provided me with some practical monitoring data. Those postgraduate students, Li Jing, Feng Lipo, Li Xinzhi and Liu Jianwei have assisted me with arranging part of data and drawing the maps. Here, the author would like to extend the warmest gratitude to them.
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Keqiang, H., Guangming, Y. & Xiangran, L. The regional distribution regularity of landslides and their effects on the environments in the Three Gorges Reservoir Region, China. Environ Geol 57, 1925–1931 (2009). https://doi.org/10.1007/s00254-008-1482-y
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DOI: https://doi.org/10.1007/s00254-008-1482-y