Influence of Wavelength-to-Excavation Span Ratio on Dynamic Failure Characteristics of a Deep-Buried Tunnel Subjected to Disturbance
文献类型：期刊论文
| 作者 | Mei, Wanquan; Xia, Yuanyou; Pan, Pengzhi; Li, Mei; Han, Gaosheng |
| 刊名 | INTERNATIONAL JOURNAL OF GEOMECHANICS
 |
| 出版日期 | 2022-10-01 |
| 卷号 | 22期号:10 |
| ISSN号 | 1532-3641 |
| 关键词 | Author keywords Dynamic perturbation Wavelength-to-excavation span ratio Complex function theory Integral transform Elastoplastic cellular automaton |
| 英文摘要 | Deep-buried structures are frequently and inevitably subjected to aperiodic perturbation during their life circle, resulting in damage to the rock mass surrounding the structures under the coupled action of excavation-induced local stress and dynamic perturbation. The investigation presented in this paper concentrates on the analytical and numerical dynamic responses around an unsupported deep-buried tunnel subjected to blasting disturbance with different wavelength-to-excavation span ratios (lambda/D). Based on the complex function theory, the integral transform and its inversion, the elastic responses around the tunnel are obtained theoretically. Then the corresponding elastoplastic counterparts are explored using a self-developed code: elastoplastic cellular automaton. The analytical results indicate that Poisson's ratio, the ratio of total time for blasting load to rising time, and lambda/D have a significant influence on the distributions of dynamic stress concentration and velocity vibrations. Moreover, the numerical results reveal that tensile failure and the compression-shear counterpart are major damage mechanisms for the rock mass when the wavelength is less than the excavation span, while the compression-shear failure is major damage mechanism when the wavelength exceeds the excavation span. The analytical and numerical results can provide guidance for the support of deep-buried rock tunnels. |
| 学科主题 | Engineering |
| 语种 | 英语 |
| 出版者 | ASCE-AMER SOC CIVIL ENGINEERS |
| WOS记录号 | WOS:000840506600017 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/34839]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.Wuhan University of Technology; 2.Chinese Academy of Sciences; Wuhan Institute of Rock & Soil Mechanics, CAS; 3.Wuhan University of Technology |
| 推荐引用方式 GB/T 7714 | Mei, Wanquan,Xia, Yuanyou,Pan, Pengzhi,et al. Influence of Wavelength-to-Excavation Span Ratio on Dynamic Failure Characteristics of a Deep-Buried Tunnel Subjected to Disturbance[J]. INTERNATIONAL JOURNAL OF GEOMECHANICS,2022,22(10). |
| APA | Mei, Wanquan,Xia, Yuanyou,Pan, Pengzhi,Li, Mei,&Han, Gaosheng.(2022).Influence of Wavelength-to-Excavation Span Ratio on Dynamic Failure Characteristics of a Deep-Buried Tunnel Subjected to Disturbance.INTERNATIONAL JOURNAL OF GEOMECHANICS,22(10). |
| MLA | Mei, Wanquan,et al."Influence of Wavelength-to-Excavation Span Ratio on Dynamic Failure Characteristics of a Deep-Buried Tunnel Subjected to Disturbance".INTERNATIONAL JOURNAL OF GEOMECHANICS 22.10(2022). |
入库方式： OAI收割
来源：武汉岩土力学研究所
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