In situ failure investigation and time-dependent damage test for columnar jointed basalt at the Baihetan left dam foundation
文献类型：期刊论文
| 作者 | Jiang, Quan; Wang, Bin; Feng, Xia-Ting ; Fan, Qi-Xiang; Wang, Zhilin; Pei, Shufeng; Jiang, Shan
|
| 刊名 | BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
 |
| 出版日期 | 2019 |
| 卷号 | 78期号:6页码:3875-3890 |
| 关键词 | Columnar jointed basalt Excavation damage zone Time-dependent damage Jointed rock mass Ultrasonic wave test |
| ISSN号 | 1435-9529 |
| DOI | 10.1007/s10064-018-1399-y |
| 英文摘要 | Columnar jointed basalt (CJB), characterized by a hexagonal joint network, poses a great challenge for geotechnical designs due to its time-dependent propensity to deformation and damage. In this paper, the geometrical structure and failure modes of CJB exposed on a dam foundation is presented. The study was conducted during the unloading excavation of the Baihetan dam, China, aiming to provide a more in-depth understanding of the CJB damage mechanism. A systematic field test for the columnar jointed rock mass was also carried out on the dam foundation using ultrasonic P wave measurements. It was found that the excavation damage zone of the CJB not only showed time-dependent damage both in depth and degree but also showed spatially inhomogeneous distribution of the damage degree. Sequential regression analysis further demonstrated the time-dependent behavior of the CJB. Successive observations using digital borehole cameras in the field showed that the unloading damage mechanism of the Baihetan CJB was mainly related to the time-dependent opening of the initially closed joints. Several reinforcing methods for improving the stability of the damaged CJB, including the injection of liquid cement and the installation of the prestressed rock bolts, are discussed. |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000482240400002 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/14903]  |
| 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, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China; 2.China Three Gorges Project Corp, Beijing 100038, Peoples R China; 3.Univ Mississippi, Dept Mech Engn, Oxford, MS 38677 USA |
| 推荐引用方式 GB/T 7714 | Jiang, Quan,Wang, Bin,Feng, Xia-Ting,et al. In situ failure investigation and time-dependent damage test for columnar jointed basalt at the Baihetan left dam foundation[J]. BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,2019,78(6):3875-3890. |
| APA | Jiang, Quan.,Wang, Bin.,Feng, Xia-Ting.,Fan, Qi-Xiang.,Wang, Zhilin.,...&Jiang, Shan.(2019).In situ failure investigation and time-dependent damage test for columnar jointed basalt at the Baihetan left dam foundation.BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,78(6),3875-3890. |
| MLA | Jiang, Quan,et al."In situ failure investigation and time-dependent damage test for columnar jointed basalt at the Baihetan left dam foundation".BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT 78.6(2019):3875-3890. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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