Stress-induced cracking performance of hard basalt in a large underground cavern based on multi-information observation
文献类型：期刊论文
| 作者 | Jiang,Quan2; Xu,Dingping2; Zhao,JinShuai2; Li,Shaojun2; Wang,Wei1; Xu,Jian1 |
| 刊名 | IOP Conference Series: Earth and Environmental Science
 |
| 出版日期 | 2020-10-01 |
| 卷号 | 570期号:4 |
| ISSN号 | 1755-1307 |
| DOI | 10.1088/1755-1315/570/4/042007 |
| 英文摘要 | Abstract Overcoming the brittle cracking and the corresponding hard rock has become the key bottleneck challenge in the excavation of underground engineering with high geostress. To further understand the onsite cracking’s characteristics and the basic mechanism of hard rock, we carried out a detailed field monitoring action for basalt breaking behaviors in a large underground powerhouse by in situ investigation, digital borehole camera, multi-point deformation measurement, and real-time micro-seismic monitoring. On the basis of our observations, the inner cracking performances of surrounding rock embodied as discontinuous appearance and open of cracks during excavation, and these fractures were often parallel to the outline of the cavern and extended to the inner side because of the subsequent excavation disturbance. Corresponding numerical simulation indicated that the redistribution of rock stress induced local stress concentration and would result in the splitting break of basalt. Field complicated proof indicated that this stress-induced cracking of basalt belonged to the tensile break, and the macroscopic deformation of the surrounding was the result of the accumulation of abundant open deformation of discontinued cracks. This observed achievement can enrich our understanding of the cracking mechanism of hard rock and provide some key cures for optimization design for underground engineering construction under high geostress conditions. |
| 语种 | 英语 |
| WOS记录号 | IOP:1755-1307-570-4-042007 |
| 出版者 | IOP Publishing |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/15595]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.China Three Gorges Project Corporation, Beijing 100038, China 2.State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, Hubei, 430071, China |
| 推荐引用方式 GB/T 7714 | Jiang,Quan,Xu,Dingping,Zhao,JinShuai,et al. Stress-induced cracking performance of hard basalt in a large underground cavern based on multi-information observation[J]. IOP Conference Series: Earth and Environmental Science,2020,570(4). |
| APA | Jiang,Quan,Xu,Dingping,Zhao,JinShuai,Li,Shaojun,Wang,Wei,&Xu,Jian.(2020).Stress-induced cracking performance of hard basalt in a large underground cavern based on multi-information observation.IOP Conference Series: Earth and Environmental Science,570(4). |
| MLA | Jiang,Quan,et al."Stress-induced cracking performance of hard basalt in a large underground cavern based on multi-information observation".IOP Conference Series: Earth and Environmental Science 570.4(2020). |
入库方式： OAI收割
来源：武汉岩土力学研究所
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