Numerical Study of Damage to Rock Surrounding an Underground Coal Roadway Excavation
Joint Authors
Wei, Jiangbo
Wang, Shuangming
Zhao, Zhou
Li, Delu
Guo, Lipeng
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-16, 16 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-09-10
Country of Publication
Egypt
No. of Pages
16
Main Subjects
Abstract EN
In coal mines, underground roadways are required to transport coal and personnel.
Such tunnels can become unstable and hazardous.
This study simulates deformation and damage in the rock surrounding a shallow coal seam roadway using particle flow code.
A numerical model of particle flow in the surrounding rock was constructed based on field survey and drilling data.
Microcharacteristic indices, including stress, displacement, and microcrack fields, were used to study deformation and damage characteristics and mechanisms in the surrounding rocks.
The results show that the stress within the rock changed gradually from a vertical stress to a circumferential stress pattern.
Stress release led to self-stabilizing diamond-shaped and X-shaped tensile stress distribution patterns after the excavation of the roadway.
Cracking increased and eventually formed cut-through cracks as the concentrated stress transferred to greater depths at the sides, forming shear and triangular-shaped failure regions.
Overall, the roof and floor were relatively stable, whereas the sidewalls gradually failed.
These results provide a reference for the control of rock surrounding roadways in coal mines.
American Psychological Association (APA)
Wei, Jiangbo& Wang, Shuangming& Zhao, Zhou& Li, Delu& Guo, Lipeng. 2020. Numerical Study of Damage to Rock Surrounding an Underground Coal Roadway Excavation. Advances in Civil Engineering،Vol. 2020, no. 2020, pp.1-16.
https://search.emarefa.net/detail/BIM-1124465
Modern Language Association (MLA)
Wei, Jiangbo…[et al.]. Numerical Study of Damage to Rock Surrounding an Underground Coal Roadway Excavation. Advances in Civil Engineering No. 2020 (2020), pp.1-16.
https://search.emarefa.net/detail/BIM-1124465
American Medical Association (AMA)
Wei, Jiangbo& Wang, Shuangming& Zhao, Zhou& Li, Delu& Guo, Lipeng. Numerical Study of Damage to Rock Surrounding an Underground Coal Roadway Excavation. Advances in Civil Engineering. 2020. Vol. 2020, no. 2020, pp.1-16.
https://search.emarefa.net/detail/BIM-1124465
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1124465