Stability Evolution of a Large Rock Block Revealed in the Excavation Process of the Left Slope of Jinping-I Hydropower Station Based on the Proposed Sarma's Method
文献类型：会议论文
| 作者 | Chen, Tao1; Sun, Guanhua2; Zheng, Hong1,2 |
| 出版日期 | 2016 |
| 会议日期 | NOV 28-29, 2015 |
| 会议地点 | Guangzhou, PEOPLES R CHINA |
| 关键词 | Sarma's method Rock slope stability Shear strength Limit equilibrium |
| 卷号 | 44 |
| 页码 | 231-238 |
| 英文摘要 | There is a latent large block near the dam abutment of Jinping-I hydropower station, the stability of which is very important in the excavation process. As we know, Sarma's method is able to evaluate the stability of rock slopes with complex structural planes, because it takes into account the mobilization of internal strength of potential landslides. In the presence of multiple rock layers, however, no unified way is available to calculate the total strength on the slice interface, although in most cases the equivalent strength parameters are taken as the weighted averages of strength parameters of all layers. From the assumption that the normal pressure along the slice interface takes on a triangular distribution, we derive the equivalent strength parameters of the slice interface. Moreover, we discuss the influence of different selections of equivalent strength parameters of the slice interface on the factor of safety of a rock slope from a hydropower station in construction, with the conclusion that the difference might be appreciable. At last, based on the proposed procedure the stability evolution of the large rock block in excavation process is discussed. Its stability is increased before elevation 1840 m is reached because the upper portions of the blocks are removed, which help slide. After that, however, the stability is decreased gradually because the lower anti-sliding portions are removed little by little, which help stabilize the slip bodies. After the sliding body is wholly revealed, the factor of safety is 2.83, which is higher than that of sliding body corresponds to the dam crest and lower than that of the maximum in excavation process. |
| 会议录 | PROCEEDINGS OF THE 2015 INTERNATIONAL CONFERENCE ON ARCHITECTURAL, CIVIL AND HYDRAULICS ENGINEERING (ICACHE 2015)
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| 会议录出版者 | ATLANTIS PRESS |
| 会议录出版地 | PARIS |
| 语种 | 英语 |
| WOS研究方向 | Construction & Building Technology ; Engineering ; Transportation |
| WOS记录号 | WOS:000373382700046 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/4862]  |
| 专题 | 岩土力学所知识全产出_会议论文 国家重点实验室知识产出_会议论文 |
| 作者单位 | 1.China Three Gorges Univ, Coll Civil Engn & Architecture ; 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn |
| 推荐引用方式 GB/T 7714 | Chen, Tao,Sun, Guanhua,Zheng, Hong. Stability Evolution of a Large Rock Block Revealed in the Excavation Process of the Left Slope of Jinping-I Hydropower Station Based on the Proposed Sarma's Method[C]. 见:. Guangzhou, PEOPLES R CHINA. NOV 28-29, 2015. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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