Analysis of stress state of transversely isotropic weak rock stratum
文献类型：期刊论文
| 作者 | Zhe,Li3,4; Guangze,Zhang2; Enyu,Chen1 |
| 刊名 | IOP Conference Series: Earth and Environmental Science
 |
| 出版日期 | 2021-03-01 |
| 卷号 | 692期号:4 |
| 关键词 | Ground stress Transverse isotropy Soft and hard interbedding |
| ISSN号 | 1755-1307 |
| DOI | 10.1088/1755-1315/692/4/042116 |
| 英文摘要 | Abstract In geotechnical engineering excavation and design, in-situ stress field is a factor that engineers must consider. However, in practical engineering, the testing method of in-situ stress in weak rock stratum is not mature, and how to obtain the distribution of in-situ stress field in weak rock stratum efficiently and accurately has become a research hotspot. According to the in-situ stress test results of known rock strata, based on the principle of deformation coordination of adjacent rock strata, the stress state of rock strata which is difficult to carry out in-situ stress test is deduced. It is considered that considering the transverse isotropy of rock strata will greatly improve the prediction accuracy, which is verified by ABAQUS finite element model. The results show that the transverse isotropic model is far superior to the isotropic model in predicting the distribution of ground stress field in rock strata (shale, slate, etc.) with obvious anisotropy. However, the greater the ratio of elastic modulus between horizontal and vertical direction, the smaller the ratio of elastic modulus between horizontal and vertical direction, and the greater the difference between the predicted and measured rock stress states. The obtained conclusions are applied to the estimation of ground stress of Que Ge Ka fault in Litang Tunnel, sichuan-tibet railway, which provides sufficient theoretical basis for the classification of large deformation in the process of tunnel excavation and design. |
| 语种 | 英语 |
| WOS记录号 | IOP:1755-1307-692-4-042116 |
| 出版者 | IOP Publishing |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/15680]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.The third engineering company of China Gezhouba Group, Xian, Shanxi, 710000, China 2.China Railway Eryuan Engineering Group Co., Ltd, Chengdu,Sichuan, 610031, China 3.University of Chinese Academy of Sciences, Beijing, 100049, China 4.Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, 430071, China |
| 推荐引用方式 GB/T 7714 | Zhe,Li,Guangze,Zhang,Enyu,Chen. Analysis of stress state of transversely isotropic weak rock stratum[J]. IOP Conference Series: Earth and Environmental Science,2021,692(4). |
| APA | Zhe,Li,Guangze,Zhang,&Enyu,Chen.(2021).Analysis of stress state of transversely isotropic weak rock stratum.IOP Conference Series: Earth and Environmental Science,692(4). |
| MLA | Zhe,Li,et al."Analysis of stress state of transversely isotropic weak rock stratum".IOP Conference Series: Earth and Environmental Science 692.4(2021). |
入库方式： OAI收割
来源：武汉岩土力学研究所
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