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Geological Engineering: Proceedings of the 1st International Conference (ICGE 2007)

Editor
Baosong Ma
Baosong Ma
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ISBN:
9780791802922
No. of Pages:
1760
Publisher:
ASME Press
Publication date:
2009

The studies show that the ground water in the slope plays a decisive role in its stability. The engineering examples of the Three Gorges reservoir region indicates that periodical fluctuations of reservoir water level that change the environment and condition of the intrinsic interaction water and rock, result in the deformation and failure of reservoir slopes and landslides, and drawdown of the water level is the major factor inducing the landslides at the reservoir bank. This paper takes Tangjiao village landslide in Wanzhou district in Chongqing Municipality for example, based on two longitudinal profiles of the landslide and the dynamic deformation data monitored by six borehole Landslide Displacement Monitoring Systems, the development trend and sliding nature of the landslide was identified and the deformation and failure mechanism of the landslide and its influence factor, i.e. the drawdown of reservoir water level was researched and discussed. These synthetic studies show that the drawdown of reservoir water level caused the distinct displacement of Tangjiao village landslides, and this old landslide's coming into creeping stage. Furthermore, the landslide influenced by other unfavorable factors is likely to trigger or accelerate the revival of the landslide.

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