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Research on Evaluation Index and Application of Rockburst Risk in Deep Strip Mining
Joint Authors
Jiang, Bangyou
Ji, Hongguang
Zou, Tong
Fu, Long
Gu, Shitan
Lu, Jiaxin
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-09-08
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
The practice shows that deep strip mining induces rockburst disaster easily.
Accurately evaluating rockburst risk of the strip coal pillar is of great significance for ensuring the safety of deep strip mining.
In this paper, the catastrophe mechanics model was used to analyze the abrupt instability condition of strip coal pillar.
And the three indicators that are the medium stiffness ratio (k) of the elastic and plastic zone in the coal pillar, the plastic zone width ratio (aY), and the elastic deformation index (Uq) of core zone were put forward with considering the geometry size of coal pillar.
Based on the 3202 panel of Gucheng Coal Mine, the evolution characteristics of rockburst risk of coal pillar under different mining widths and coal pillar widths were studied by numerical simulation.
The evaluation result shows that the strip coal pillar of the 3202 panel is in danger of strong rockburst, which is more in line with the actual situation than the results of the traditional rockburst tendency identification test and comprehensive index method.
These three indicators can be regarded as important indicators to evaluate the rockburst risk in the strip mining engineering field.
Based on that, the design principle of strip mining in Gucheng Coal Mine was put forward, which is considered an important reference for similar cases.
American Psychological Association (APA)
Jiang, Bangyou& Ji, Hongguang& Fu, Long& Gu, Shitan& Zou, Tong& Lu, Jiaxin. 2020. Research on Evaluation Index and Application of Rockburst Risk in Deep Strip Mining. Shock and Vibration،Vol. 2020, no. 2020, pp.1-10.
https://search.emarefa.net/detail/BIM-1212696
Modern Language Association (MLA)
Jiang, Bangyou…[et al.]. Research on Evaluation Index and Application of Rockburst Risk in Deep Strip Mining. Shock and Vibration No. 2020 (2020), pp.1-10.
https://search.emarefa.net/detail/BIM-1212696
American Medical Association (AMA)
Jiang, Bangyou& Ji, Hongguang& Fu, Long& Gu, Shitan& Zou, Tong& Lu, Jiaxin. Research on Evaluation Index and Application of Rockburst Risk in Deep Strip Mining. Shock and Vibration. 2020. Vol. 2020, no. 2020, pp.1-10.
https://search.emarefa.net/detail/BIM-1212696
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1212696