Analysis on Loose Circle of Surrounding Rock of Large Deformation Soft-Rock Tunnel
Joint Authors
Ding, Xiao
Wang, Rui
Liu, Yiyuan
Deng, Xianghui
Huang, Xiaodong
Zhang, Yu
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-11-17
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
With the rapid development of tunnel construction in China, deep buried and long tunnel projects are emerging in areas with complex engineering geological conditions and harsh environment, and thus large deformation of tunnels under conditions of high in situ stress and soft rock becomes increasingly prominent and endangers engineering safety.
Therefore, it is of great significance to control the deformation and improve the stability of surrounding rock by analyzing the thickness and distribution law of loose circle according to the unique mechanical properties and failure mechanism of surrounding rock of large deformation soft-rock tunnel.
Based on unified strength theory, this paper deduces the radius calculation formula of the loose circle by considering the influence of intermediate principal stress.
Furthermore, the theoretical calculations and field tests of the loose circle in the typical sections of grade II and III deformation of Yuntunbao tunnel are carried out, and the thickness and distribution law of loose circle of surrounding rock of large deformation soft-rock tunnel is revealed.
The results show that the formula based on the unified strength criterion is applicable for a large deformation tunnel in soft rock.
American Psychological Association (APA)
Wang, Rui& Liu, Yiyuan& Deng, Xianghui& Zhang, Yu& Huang, Xiaodong& Ding, Xiao. 2020. Analysis on Loose Circle of Surrounding Rock of Large Deformation Soft-Rock Tunnel. Advances in Civil Engineering،Vol. 2020, no. 2020, pp.1-11.
https://search.emarefa.net/detail/BIM-1123786
Modern Language Association (MLA)
Wang, Rui…[et al.]. Analysis on Loose Circle of Surrounding Rock of Large Deformation Soft-Rock Tunnel. Advances in Civil Engineering No. 2020 (2020), pp.1-11.
https://search.emarefa.net/detail/BIM-1123786
American Medical Association (AMA)
Wang, Rui& Liu, Yiyuan& Deng, Xianghui& Zhang, Yu& Huang, Xiaodong& Ding, Xiao. Analysis on Loose Circle of Surrounding Rock of Large Deformation Soft-Rock Tunnel. Advances in Civil Engineering. 2020. Vol. 2020, no. 2020, pp.1-11.
https://search.emarefa.net/detail/BIM-1123786
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1123786