A case study on the cavity effect of a water tunnel on the ground vibrations induced by excavating blasts
文献类型：期刊论文
| 作者 | Xia, Xiang; Li, Haibo ; Liu, Yaqun; Yu, Chong
|
| 刊名 | TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
 |
| 出版日期 | 2018 |
| 卷号 | 71页码:292-297 |
| 关键词 | Cavity effect Tunnel Blast vibration PPV |
| ISSN号 | 0886-7798 |
| DOI | 10.1016/j.tust.2017.08.026 |
| 英文摘要 | The cavity effect means the amplifications of blast vibrations when propagating through a cavity inside the rock mass. It has been investigated by a series of blast tests in an underground water tunnel. Monitoring points were set up in pairs on the ground surface and symmetrically about the tunnel face. The amplifying coefficient of blast vibrations was defined as the PPV (peak particle velocity) ratio of the two symmetry points. It is found that the amplifying coefficient first rises to a maximum of 3.5, and then falls down with the distance in the tunnel axial direction. Meanwhile, tunnel radius and its buried depth are two other influencing factors. The coefficient linearly increases with tunnel radius, while decreases with the depth in a power function. These results suggest that the cavity effect only works within a limited scope on the ground, and mainly occurs in shallow tunnel excavations. By introducing a ratio of the tunnel depth to its radius, an empirical formula was proposed to calculate the amplifying coefficient. It can be used to predict the PPV amplifications and therefore define a vibration control area for the safety of ground structures and facilities. It could also be applied to more site conditions by choosing appropriate parameter values in the formula. |
| WOS研究方向 | Construction & Building Technology ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000418212600026 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/4184]  |
| 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 | Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn |
| 推荐引用方式 GB/T 7714 | Xia, Xiang,Li, Haibo,Liu, Yaqun,et al. A case study on the cavity effect of a water tunnel on the ground vibrations induced by excavating blasts[J]. TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY,2018,71:292-297. |
| APA | Xia, Xiang,Li, Haibo,Liu, Yaqun,&Yu, Chong.(2018).A case study on the cavity effect of a water tunnel on the ground vibrations induced by excavating blasts.TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY,71,292-297. |
| MLA | Xia, Xiang,et al."A case study on the cavity effect of a water tunnel on the ground vibrations induced by excavating blasts".TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY 71(2018):292-297. |
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。