Numerical Investigation of Damage Risks of Roadway Surrounding Rocks under Oblique Incident Dynamic Loads
Joint Authors
Dou, Lin-Ming
Wang, Zhengyi
Li, Jing
Kang, Kai
Feng, Longfei
Source
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-13, 13 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-03-08
Country of Publication
Egypt
No. of Pages
13
Main Subjects
Abstract EN
In order to quantitatively demonstrate the damage risks of roadway surrounding rocks and meanwhile comprehensively consider stress states of surrounding rocks, an index to evaluate damage hazards was established based on Mohr-Coulomb strength criterion.
Taking the track roadway of Longwall Panel 402103 in Hujiahe Coal Mine as an example, damage risks and dynamic response characteristics of surrounding rocks under oblique incident dynamic loads were studied in accordance with the new evaluation criterion.
The results show that all conventional analysis indexes only reflect the stress distribution characteristics of coal-rocks from a certain aspect in two-dimension space, while all stress components can be considered by the damage risk index, with the evaluation criterion quantified, which can comprehensively reveal the stress states and damage of coal-rock masses.
Under dynamic loading, the overall damage risks and damage degrees of roadway surrounding rocks are attributed to the superposition results of dynamic and static loads.
The dynamic loads not only aggravate the damage of shallow surrounding rocks but also increase the damage risks of deep parts.
The engineering practice demonstrates that the analysis results coincide with in situ damage of roadway surrounding rocks.
American Psychological Association (APA)
Wang, Zhengyi& Dou, Lin-Ming& Li, Jing& Kang, Kai& Feng, Longfei. 2017. Numerical Investigation of Damage Risks of Roadway Surrounding Rocks under Oblique Incident Dynamic Loads. Shock and Vibration،Vol. 2017, no. 2017, pp.1-13.
https://search.emarefa.net/detail/BIM-1204796
Modern Language Association (MLA)
Wang, Zhengyi…[et al.]. Numerical Investigation of Damage Risks of Roadway Surrounding Rocks under Oblique Incident Dynamic Loads. Shock and Vibration No. 2017 (2017), pp.1-13.
https://search.emarefa.net/detail/BIM-1204796
American Medical Association (AMA)
Wang, Zhengyi& Dou, Lin-Ming& Li, Jing& Kang, Kai& Feng, Longfei. Numerical Investigation of Damage Risks of Roadway Surrounding Rocks under Oblique Incident Dynamic Loads. Shock and Vibration. 2017. Vol. 2017, no. 2017, pp.1-13.
https://search.emarefa.net/detail/BIM-1204796
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1204796