Research on the displacement response ratio of groundwater dynamic augment and its application in evaluation of the slope stability
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- 作者：He Keqiang ; Wang Zhiliang ; Ma Xiaoyun ; Lee Zengtao
- 关键词：Displacement response ratio ; Groundwater dynamic augment ; Evaluation of slope stability ; Xintan landslide
- 刊名：Environmental Earth Sciences
- 出版年：2015
- 出版时间：October 2015
- 年：2015
- 卷：74
- 期：7
- 页码：5773-5791
- 全文大小：1,994 KB
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Wang Zhiliang (2)
Ma Xiaoyun (1)
Lee Zengtao (3)
1. Department of Civil Engineering, Qingdao Technological University, No. 261, No. 11 Fushun Road, Qingdao, 266033, Shandong, People’s Republic of China
2. Qingdao Laoshan National Land Resource Substation, Qingdao, 266061, Shandong, People’s Republic of China
3. Cooec-Enpal Engineering Co.Ltd., Qingdao, 266061, Shandong, People’s Republic of China - 刊物类别：Earth and Environmental Science
- 刊物主题：None Assigned
- 出版者：Springer Berlin Heidelberg
- ISSN：1866-6299
文摘
On the basis of systematic analysis on the motivation and mechanism of displacement and destabilization of the water-induced landslides, this paper completes a study on the relationship between groundwater dynamic effect laws and displacement response characteristics in the process of the colluvial landslide stability evolution. It is found that the displacement and destabilization of landslide are directly controlled by the underground water level variation and also there exists one-to-one corresponding relation between the deformation of landslide and the groundwater level variation. On the basis of the results above, the underground water level increment and the corresponding deformation variation are taken to be as the dynamic load parameter of landslide and the dynamic incremental displacement response parameter, respectively. Then the displacement dynamic appraisal parameter and prediction model of the groundwater dynamic incremental displacement response ratio are determined in term of the basic principle of elastic–plastic mechanics in this paper. Meanwhile, taking the typical colluvial landslide in the Three Gorges Reservoir Area—Xintan landslide as an example, the values and changing rule of the groundwater dynamic incremental displacement response ratio parameter of the A3 and B3 monitoring points on this landslide are obtained by means of the groundwater dynamic incremental displacement response ratio prediction model, finding that the change rule of the dynamic incremental displacement response ratio-time curve is consistent basically with the dynamic stability evolutional law of the actual slope. The research results show that the groundwater dynamic incremental displacement response ratio prediction model can be used to forecast the kinetics of displacement for this slope, and this method has widely theory and extensive practicality. Keywords Displacement response ratio Groundwater dynamic augment Evaluation of slope stability Xintan landslide