Unloading performances and stabilizing practices for columnar jointed basalt: A case study of Baihetan hydropower station
文献类型：期刊论文
| 作者 | Fan Qixiang1; Feng Xiating2 ; Weng Wenlin1; Fan Yilin1; Jiang Quan2
|
| 刊名 | Journal of Rock Mechanics and Geotechnical Engineering
 |
| 出版日期 | 2017 |
| 卷号 | 9期号:6页码:1041 |
| 关键词 | Columnar jointed basalt Diversion tunnels Rock unloading In situ test Hydropower station Engineering geology. Rock mechanics. Soil mechanics. Underground construction TA703-712 |
| ISSN号 | 1674-7755 |
| 英文摘要 | The columnar jointed rock mass (CJR), composed of polygonal cross-sectional columns cut by several groups of joints in various directions, was exposed during the excavations of the Baihetan hydropower station, China. In order to investigate the unloading performances and the stability conditions during excavation of the columns, an experimental field study was performed. Firstly, on-site investigations indicated that the geotechnical problems, including rock relaxation, cracking and collapse, were the most prominent for the CJR Class I that contains intensive joint network and the smallest column sizes. Comprehensive field tests, including deformation measurement by multi-point extensometers, ultrasonic wave testing, borehole television observation and stress monitoring of rock anchors, revealed that the time-dependent relaxation of the CJRs was marked. The practical excavation experiences for the Baihetan columnar jointed rock masses, such as blasting scheme, supporting time of shotcrete and rock bolts, were presented in the excavations of the diversion tunnels. These detailed investigations and practical construction experiences can provide helpful information for similar geotechnical works in jointed rock mass. |
| 资助项目 | [International Partnership Program of Chinese Academy of Sciences] ; [Key Project of Natural Science Foundation of China] ; [National Natural Science Foundation of China] |
| 语种 | 英语 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/26039]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.China Three Gorges Corp, Beijing 100038, Peoples R China 2.中国科学院武汉岩土力学研究所 |
| 推荐引用方式 GB/T 7714 | Fan Qixiang,Feng Xiating,Weng Wenlin,et al. Unloading performances and stabilizing practices for columnar jointed basalt: A case study of Baihetan hydropower station[J]. Journal of Rock Mechanics and Geotechnical Engineering,2017,9(6):1041. |
| APA | Fan Qixiang,Feng Xiating,Weng Wenlin,Fan Yilin,&Jiang Quan.(2017).Unloading performances and stabilizing practices for columnar jointed basalt: A case study of Baihetan hydropower station.Journal of Rock Mechanics and Geotechnical Engineering,9(6),1041. |
| MLA | Fan Qixiang,et al."Unloading performances and stabilizing practices for columnar jointed basalt: A case study of Baihetan hydropower station".Journal of Rock Mechanics and Geotechnical Engineering 9.6(2017):1041. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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