Creep model of chlorite schist in deep buried strata and its application in tunnel squeezing deformation prediction
文献类型：期刊论文
| 作者 | Yang, Liu1; Zhou, Hui1,5; Yang, Fanjie1; Zhang, Chuanqing1,5; Liu, Wenbo2,3; Iqbal, Sayed Muhammad1; Tu, Hongliang1; Yang, Yong4 |
| 刊名 | COMPUTERS AND GEOTECHNICS
 |
| 出版日期 | 2024-05-01 |
| 卷号 | 169页码:19 |
| 关键词 | Chlorite schist Creep Fractional order Fractal order Perzyna overstress theory Secondary development |
| ISSN号 | 0266-352X |
| DOI | 10.1016/j.compgeo.2024.106190 |
| 英文摘要 | Excavation of long, deep, buried tunnels under high stress and soft rock conditions is highly challenging because the surrounding rock may undergo severe time -dependent squeeze deformation or may even collapse during construction, which poses a significant threat to the stability of tunnels. The creep constitutive model can be used to predict time -dependent extrusion deformation; however, the conventional creep model has limitations in estimating delayed squeezing deformation and does not describe time -dependent deformation in the accelerated creep stage. For this reason, the FCVISC-NP creep constitutive model is proposed, which can more accurately describe the nonlinear gradual characteristics of delayed squeezing deformation and can also estimate the accelerated creep characteristics of squeezing deformation. The constitutive equations of the FCVISC-NP model in the three-dimensional stress state are derived based on Perzyna overstress theory with the viscoplastic flow law. The customization of the FCVISC-NP model in FLAC3D is implemented by using object -oriented C++. The research results can be used to make reliable predictions of the surrounding rock deformation for similar deeply buried soft rock and can provide an important reference for the design, the construction, and the long-term safety assessment of tunnels. |
| 资助项目 | National Natural Science Foundation of China[41941018] ; Major Science and Technology Special Projects of Yunnan Province[202102AF080001] ; Major Science and Technology Special Projects of Yunnan Province[E028420201] |
| WOS研究方向 | Computer Science ; Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001202822000001 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/40998]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Zhou, Hui |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China 2.Guangxi Key Lab Geomech & Geotech Engn, Guilin 541004, Peoples R China 3.Guilin Univ Technol, Sch Civil Engn, Guilin 541004, Peoples R China 4.China Railway 11th Bur Grp City Rail Engn Co Ltd, Wuhan 430074, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Liu,Zhou, Hui,Yang, Fanjie,et al. Creep model of chlorite schist in deep buried strata and its application in tunnel squeezing deformation prediction[J]. COMPUTERS AND GEOTECHNICS,2024,169:19. |
| APA | Yang, Liu.,Zhou, Hui.,Yang, Fanjie.,Zhang, Chuanqing.,Liu, Wenbo.,...&Yang, Yong.(2024).Creep model of chlorite schist in deep buried strata and its application in tunnel squeezing deformation prediction.COMPUTERS AND GEOTECHNICS,169,19. |
| MLA | Yang, Liu,et al."Creep model of chlorite schist in deep buried strata and its application in tunnel squeezing deformation prediction".COMPUTERS AND GEOTECHNICS 169(2024):19. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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