Microseismicity and focal mechanism of blasting-induced block falling of intersecting chamber of large underground cavern under high geostress
文献类型：期刊论文
| 作者 | Zhao, Jin-shuai1,2; Jiang, Quan1; Pei, Shu-feng3; Chen, Bing-rui1; Xu, Ding-ping1; Song, Lei-bo4 |
| 刊名 | JOURNAL OF CENTRAL SOUTH UNIVERSITY
 |
| 出版日期 | 2023-02-01 |
| 卷号 | 30期号:2页码:542 |
| 关键词 | block falling microseismic monitoring blasting excavation microseismicity focal mechanism |
| ISSN号 | 2095-2899 |
| 英文摘要 | Block falling is a rock mass damage disaster that is easily encountered during the excavation of underground caverns. To objectively assess the microseismicity and focal mechanism of block falling of underground intersecting chamber induced by blasting excavation, an array of six uniaxial accelerometers and eight uniaxial geophones were installed around the busbar chamber of underground cavern group of the Baihetan Hydropower Station in China. In the time domain, the seismicity response to production blasting reveals that within 3 h after blasting, microseismicity is in an active phase. In the spatial domain, with the advance of working face, the concentrated stress is distributed around the excavation region, and the damage and deterioration of the rock mass are gradually intensified. The active area of microseismic (MS) events is consistent with the stress concentration region. By analyzing the fracture mechanism based on the moment tensor inversion method, it can be seen that the fracture mechanisms of block falling of the intersecting chamber are dominated by tensile fracture. The research results could provide crucial guiding reference for stability analysis, as well as for rethinking the blasting excavation and support optimization of rock masses in similar large underground cavern. |
| 学科主题 | Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000946846400001 |
| 出版者 | JOURNAL OF CENTRAL SOUTH UNIV |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/35342]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.State Key Laboratory of Geomechanics and Geotechnical Engineering (Institute of Rock and Soil Mechanics, Chinese Academy of Sciences), Wuhan 430071, China 2.Faculty of Civil Engineering and Mechanics, Jiangsu University, Zhenjiang 212013, China 3.North China University of Water Resources and Electric Power, Zhengzhou 450046, China 4.Faculty of Civil Engineering, Shaoxing University, Shaoxing 312000, China |
| 推荐引用方式 GB/T 7714 | Zhao, Jin-shuai,Jiang, Quan,Pei, Shu-feng,et al. Microseismicity and focal mechanism of blasting-induced block falling of intersecting chamber of large underground cavern under high geostress[J]. JOURNAL OF CENTRAL SOUTH UNIVERSITY,2023,30(2):542. |
| APA | Zhao, Jin-shuai,Jiang, Quan,Pei, Shu-feng,Chen, Bing-rui,Xu, Ding-ping,&Song, Lei-bo.(2023).Microseismicity and focal mechanism of blasting-induced block falling of intersecting chamber of large underground cavern under high geostress.JOURNAL OF CENTRAL SOUTH UNIVERSITY,30(2),542. |
| MLA | Zhao, Jin-shuai,et al."Microseismicity and focal mechanism of blasting-induced block falling of intersecting chamber of large underground cavern under high geostress".JOURNAL OF CENTRAL SOUTH UNIVERSITY 30.2(2023):542. |
入库方式： OAI收割
来源：武汉岩土力学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。