Extremely large deformation of tunnel induced by rock mass fracture using GPGPU parallel FDEM
文献类型：期刊论文
| 作者 | Ma, Hao1,2; Wang, Weiqin3,4; Liu, Quansheng2; Tian, Yongchao5; Jiang, Yalong6; Liu, He7; Huang, Dan1 |
| 刊名 | INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS
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| 出版日期 | 2022-06-01 |
| 卷号 | 46期号:9页码:1782 |
| ISSN号 | 0363-9061 |
| 关键词 | deep tunnel in weak rock mass FDEM GPGPU parallelize progressive fracture squeezing strength reduction due to time-dependency of rock mass |
| 英文摘要 | It is essential to better understand the large deformation behavior of deep tunnels in weak rock mass to improve the long-term stability of tunnel surrounding rock mass and design effective supports for squeezing tunnels. This paper introduces two representative large deformation engineering examples to study squeezing behavior. First, new algorithms of contact search, determination of actual contact, and calculation law of contact pairs are proposed for general-purpose computing on graphics processing units (GPGPUs), by improving the original serial algorithms and developing a compute unified device architecture (CUDA) parallel program, to satisfy the large-scale rock fracture process simulation. Then, tunnels excavation and rock reinforcement effect including the combination of U-shaped steel and steel fabric, spray concrete (SMC), and grouting were modeled. The verification, done by comparing the field observation data and the FDEM simulation results of progressive fracture and the tunnel wall convergence displacement, shows that stress remarkable rebalancing after excavation because of high in situ stress, low rock mass strength, and rock mass long-term strength reduction properties, thus, the rock mass fracture progressively and the rock blocks move continuously, leading to the rock mass volume increase significantly. The result demonstrates one of the root causes of squeezing. To effectively reduce the tunnel wall displacement and maintain tunnel stability, support with higher stiffness or multifactorial combined support methods and grouting with a better bonding effect should be used together. The findings provide insights into the progress of tunnel squeezing and the basis for support design in the squeezing tunnel. |
| 学科主题 | Engineering ; Materials Science ; Mechanics |
| 语种 | 英语 |
| 出版者 | WILEY |
| WOS记录号 | WOS:000790219000001 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/35548]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.BGRIMM Technology Group, National Center for International Joint Research on Green Metal Mining, Beijing 102628, China 2.Key Laboratory of Safety for Geotechnical and Structure Engineering of Hubei Province, School of Civil Engineering, State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan, Hubei 430072, China 3.School of Resources Engineering, Shanxi Key Laboratory of Geotechnical and Underground Space Engineering, Xi’an University of Architecture and Technology, Xian 710055, China 4.Shaanxi Key Laboratory of Safety and Durability of Concrete Structures, Xijing University, Xi′an 710123, China 5.College of Civil Engineering, Henan Polytechnic University, Jiaozuo, Henan 454000, China 6.Institute of Geotechnical Engineering, School of Civil Engineering and Architecture, East China Jiaotong University, Nanchang, Jiangxi 330013, China 7.State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, Hubei 430071, China |
| 推荐引用方式 GB/T 7714 | Ma, Hao,Wang, Weiqin,Liu, Quansheng,et al. Extremely large deformation of tunnel induced by rock mass fracture using GPGPU parallel FDEM[J]. INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS,2022,46(9):1782. |
| APA | Ma, Hao.,Wang, Weiqin.,Liu, Quansheng.,Tian, Yongchao.,Jiang, Yalong.,...&Huang, Dan.(2022).Extremely large deformation of tunnel induced by rock mass fracture using GPGPU parallel FDEM.INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS,46(9),1782. |
| MLA | Ma, Hao,et al."Extremely large deformation of tunnel induced by rock mass fracture using GPGPU parallel FDEM".INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS 46.9(2022):1782. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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