Failure Mechanism and Optimization of Arch-Bolt Composite Support for Underground Mining Tunnel
Joint Authors
Wang, Gang
Mei, Yuchun
Li, Weiteng
Yang, Ning
Li, Tingchun
Sun, Linlin
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-18, 18 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-01-17
Country of Publication
Egypt
No. of Pages
18
Main Subjects
Abstract EN
Numerical simulation tests were performed on the arch-bolt combined supported mining tunnel through an improved numerical simulation approach.
The typical soft rock roadway was took as the background, and the influencing factors such as ground stress level, lateral pressure coefficient, and support type and parameters were considered.
The failure mechanism of a semicircular roadway with two straight walls was analyzed; results showed that the arch legs’ inward bending deformation and the arch-rock separation are the breakthrough of the global failure of the supporting system, and rock bolts breakage promoted the failure process.
The effects of different controlling measures were analyzed including enlarging the bolt diameter, replacing the conventional bolts with energy-absorbing bolts, and setting arch locking bolts on the arch legs.
The field test of the concrete-filled steel tube (CFST) arch-bolt composite support scheme was carried out in a high-stress soft rock roadway, and the results indicate the reliability of the main conclusions.
American Psychological Association (APA)
Mei, Yuchun& Li, Weiteng& Yang, Ning& Wang, Gang& Li, Tingchun& Sun, Linlin. 2020. Failure Mechanism and Optimization of Arch-Bolt Composite Support for Underground Mining Tunnel. Advances in Civil Engineering،Vol. 2020, no. 2020, pp.1-18.
https://search.emarefa.net/detail/BIM-1122023
Modern Language Association (MLA)
Mei, Yuchun…[et al.]. Failure Mechanism and Optimization of Arch-Bolt Composite Support for Underground Mining Tunnel. Advances in Civil Engineering No. 2020 (2020), pp.1-18.
https://search.emarefa.net/detail/BIM-1122023
American Medical Association (AMA)
Mei, Yuchun& Li, Weiteng& Yang, Ning& Wang, Gang& Li, Tingchun& Sun, Linlin. Failure Mechanism and Optimization of Arch-Bolt Composite Support for Underground Mining Tunnel. Advances in Civil Engineering. 2020. Vol. 2020, no. 2020, pp.1-18.
https://search.emarefa.net/detail/BIM-1122023
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1122023