Study on the Stability of Surrounding Rock of Underground Circular Cavern Based on the Anchor Reinforcement Effect
Joint Authors
Gu, Shuancheng
Zhou, Pan
Sun, Wei
Hu, Chunhui
Li, Zhi
Wang, Chao
Source
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-18, 18 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-12-12
Country of Publication
Egypt
No. of Pages
18
Main Subjects
Abstract EN
Achieving a comprehensive and accurate understanding of the anchor reinforcement mechanism and a quantitative evaluation of the surrounding rock’s stability for an anchored underground cavern can provide an important theoretical basis for supporting and excavating the cavern.
First, the composite bearing structure composed of the anchor and surrounding rock was defined as the surrounding rock reinforcement body by using the homogenization method, and a new method for evaluating the stability of surrounding rock by the surrounding rock reinforcement body deformation and damage degree was proposed.
Second, based on the anchor reinforcement effect, the expression of the physical-mechanical parameters of the surrounding rock reinforcement body was deduced, and the analytical solution of stress and displacement of the surrounding rock reinforcement body was obtained.
Finally, the stability coefficient of surrounding rock indicating the degree of the surrounding rock reinforcement body damage was defined.
The research showed that the theoretical solution agreed well with the results of the numerical simulation, and the difference between the theoretical solution and the monitoring value was less than 10%, which verified the reliability of the method and the results of this paper.
The design of the length and spacing of the anchor followed the principle of long but sparse and short but dense, and the pretightening force of the anchor and the stability coefficient of surrounding rock varied linearly.
The analytical solution of this paper provides a theoretical reference for understanding the mechanism of anchor support and provides a quantitative evaluation method for the stability of surrounding rock.
Compared with the traditional support design, the theory of this paper gives full play to the self-stability of the surrounding rock and the strength of the anchor, which is conducive to saving support costs and avoiding the construction limitations in some projects.
American Psychological Association (APA)
Gu, Shuancheng& Zhou, Pan& Sun, Wei& Hu, Chunhui& Li, Zhi& Wang, Chao. 2018. Study on the Stability of Surrounding Rock of Underground Circular Cavern Based on the Anchor Reinforcement Effect. Advances in Civil Engineering،Vol. 2018, no. 2018, pp.1-18.
https://search.emarefa.net/detail/BIM-1115943
Modern Language Association (MLA)
Gu, Shuancheng…[et al.]. Study on the Stability of Surrounding Rock of Underground Circular Cavern Based on the Anchor Reinforcement Effect. Advances in Civil Engineering No. 2018 (2018), pp.1-18.
https://search.emarefa.net/detail/BIM-1115943
American Medical Association (AMA)
Gu, Shuancheng& Zhou, Pan& Sun, Wei& Hu, Chunhui& Li, Zhi& Wang, Chao. Study on the Stability of Surrounding Rock of Underground Circular Cavern Based on the Anchor Reinforcement Effect. Advances in Civil Engineering. 2018. Vol. 2018, no. 2018, pp.1-18.
https://search.emarefa.net/detail/BIM-1115943
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1115943