Safety Analysis of Lining Structure Influenced by Blasting of Tunnel with Extralarge Section and Small Space
Joint Authors
Zhao, Xuwei
Sun, Keguo
Xu, Weiping
Tang, Li
Wang, Haisu
Hong, Yiqin
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-14, 14 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-11-18
Country of Publication
Egypt
No. of Pages
14
Main Subjects
Abstract EN
In order to ensure the safety of the Daling tunnel with extralarge section and small space, the three-dimensional model of blasting dynamic simulation had been established and verified.
Then, the model was used to analyze the influence of the surrounding rock characteristics and blasting design parameters on the blasting vibration of the first hole, and the analysis of the sensitivity of each factor was carried out.
The results showed that blasting of the second hole had a serious impact on the safety of the first hole lining structure.
Based on the safety threshold and analysis of sensitivity, the explosive velocity, charge density, and digging length were selected as the key parameters affecting the safety of the tunnel structure.
Meanwhile, the corresponding engineering measure was taken based on the results of sensitivity and the actual situation on site, and, after that, the maximum PPV of the right wall of the first hole had been reduced to 9.3 cm/s, which effectively guaranteed the safe construction of the tunnel.
American Psychological Association (APA)
Zhao, Xuwei& Sun, Keguo& Xu, Weiping& Tang, Li& Wang, Haisu& Hong, Yiqin. 2020. Safety Analysis of Lining Structure Influenced by Blasting of Tunnel with Extralarge Section and Small Space. Shock and Vibration،Vol. 2020, no. 2020, pp.1-14.
https://search.emarefa.net/detail/BIM-1212916
Modern Language Association (MLA)
Zhao, Xuwei…[et al.]. Safety Analysis of Lining Structure Influenced by Blasting of Tunnel with Extralarge Section and Small Space. Shock and Vibration No. 2020 (2020), pp.1-14.
https://search.emarefa.net/detail/BIM-1212916
American Medical Association (AMA)
Zhao, Xuwei& Sun, Keguo& Xu, Weiping& Tang, Li& Wang, Haisu& Hong, Yiqin. Safety Analysis of Lining Structure Influenced by Blasting of Tunnel with Extralarge Section and Small Space. Shock and Vibration. 2020. Vol. 2020, no. 2020, pp.1-14.
https://search.emarefa.net/detail/BIM-1212916
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1212916