Effects of an increase in reservoir drawdown rate on bank slope stability: A case study at the Three Gorges Reservoir, China
文献类型：期刊论文
| 作者 | Sun, Guanhua1; Zheng, Hong1; Jiang, Wei2; Yang, Yongtao1 |
| 刊名 | ENGINEERING GEOLOGY
 |
| 出版日期 | 2017 |
| 卷号 | 221页码:61-69 |
| 关键词 | Slope stability Rapid reservoir drawdown Landslide Three Gorges |
| ISSN号 | 0013-7952 |
| DOI | 10.1016/j.enggeo.2017.02.018 |
| 英文摘要 | To increase the total power output of the Three Gorges Hydropower Station and generate greater economic benefits, it is necessary to reduce the time required for the water level of the Three Gorges Reservoir to drop, i.e., to increase the rate at which the water level drops. A rapid drop in the reservoir water level might result in a significant change in the reservoir bank environment, which can destabilize landslides that extend into the water, reactivate old landslide masses and form new landslide masses in the reservoir region. A typical slope that extends to the water in the Three Gorges Reservoir region was selected for study. We studied the geologic conditions of a selected landslide mass and developed an expression for the hydrodynamic pressure under the effects of groundwater within the slope area and an expression for the normal stress on a sliding surface under the effect of hydrodynamic pressures. In addition, the evolution of the stability of the slope (submerged to various depths) under the effects of the lowering of the reservoir level is investigated based on a strictly global analysis: (a) safety factor decreases about 14% as the reservoir level drops with rate of 0.6 m/d and about 16% with rate of 1.2 m/d at the fall of reservoir water level 30.0 m; (b) an increase in the drawdown rate of,the Three Gorges Reservoir from 0.6 m/d to 1.2 m/d is unfavourable for the stability of the slope that extends into the water, but the extent of the decrease in safety factors resulting from this increase in rate is not significant. (c) 2017 Elsevier B.V. All rights reserved. |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000400214700007 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/4042]  |
| 专题 | 岩土力学所知识全产出_期刊论文 国家重点实验室知识产出_期刊论文 |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Geomech & Geotech Engn, Inst Rock & Soil Mech ; 2.China Three Gorges Univ, Coll Civil Engn & Architecture |
| 推荐引用方式 GB/T 7714 | Sun, Guanhua,Zheng, Hong,Jiang, Wei,et al. Effects of an increase in reservoir drawdown rate on bank slope stability: A case study at the Three Gorges Reservoir, China[J]. ENGINEERING GEOLOGY,2017,221:61-69. |
| APA | Sun, Guanhua,Zheng, Hong,Jiang, Wei,&Yang, Yongtao.(2017).Effects of an increase in reservoir drawdown rate on bank slope stability: A case study at the Three Gorges Reservoir, China.ENGINEERING GEOLOGY,221,61-69. |
| MLA | Sun, Guanhua,et al."Effects of an increase in reservoir drawdown rate on bank slope stability: A case study at the Three Gorges Reservoir, China".ENGINEERING GEOLOGY 221(2017):61-69. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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