Research on the Floor Rockburst of Panel Entry under the Mining Influence: A Case Study Article Swipe
Hao Feng
,
Xiang Ma
,
Yang Zhao
,
Lishuai Jiang
,
Xinglin Wen
,
Qian Cong
,
Wang Chen
·
YOU?
·
· 2022
· Open Access
·
· DOI: https://doi.org/10.2113/2022/6238642
YOU?
·
· 2022
· Open Access
·
· DOI: https://doi.org/10.2113/2022/6238642
The stability of the entries of longwall panels is the key to ensure efficient and safe production of coal mines. In order to solve the common problems of floor heave of panel entry in western China, based on a case study, this paper studies the rockburst instability mechanism of entry floor-induced mining by considering the results from a laboratory test, numerical simulations, and field practice. After testing, the coal and rock of the entry are hard and brittle. In particular under the action of impact dynamic load, its dynamic strength is higher and has a positive correlation with the impact pressure, which provides a mechanical premise for subsequent rockburst. Numerical simulation results show that with the mining of the panel, the vertical stress and the maximum principal stress of the floor are mainly concentrated in the coal pillar along the entry, and the area and degree of concentration continue to increase. The horizontal stress is mainly concentrated in the entry floor, which is distributed in the advanced range of the panel. The deformation rate of the entry roof and the ribs is stable, while the floor shows a “mutation” characteristic of not deforming when the panel is far away and suddenly rising when it is closer to the panel. The range of the plastic zone of the roof and floor remains unchanged, the ribs are further deepened, and the mechanical properties of the coal and rock mass are further weakened. The results of this study contribute to providing a reference for the control of surrounding rock of panel entry under similar geological and geotechnical circumstances.
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Metadata
- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.2113/2022/6238642
- https://pubs.geoscienceworld.org/gsa/lithosphere/article-pdf/doi/10.2113/2022/6238642/5627495/6238642.pdf
- OA Status
- gold
- Cited By
- 1
- References
- 35
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4281895538
All OpenAlex metadata
Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W4281895538Canonical identifier for this work in OpenAlex
- DOI
-
https://doi.org/10.2113/2022/6238642Digital Object Identifier
- Title
-
Research on the Floor Rockburst of Panel Entry under the Mining Influence: A Case StudyWork title
- Type
-
articleOpenAlex work type
- Language
-
enPrimary language
- Publication year
-
2022Year of publication
- Publication date
-
2022-06-09Full publication date if available
- Authors
-
Hao Feng, Xiang Ma, Yang Zhao, Lishuai Jiang, Xinglin Wen, Qian Cong, Wang ChenList of authors in order
- Landing page
-
https://doi.org/10.2113/2022/6238642Publisher landing page
- PDF URL
-
https://pubs.geoscienceworld.org/gsa/lithosphere/article-pdf/doi/10.2113/2022/6238642/5627495/6238642.pdfDirect link to full text PDF
- Open access
-
YesWhether a free full text is available
- OA status
-
goldOpen access status per OpenAlex
- OA URL
-
https://pubs.geoscienceworld.org/gsa/lithosphere/article-pdf/doi/10.2113/2022/6238642/5627495/6238642.pdfDirect OA link when available
- Concepts
-
Roof, Rock mass classification, Longwall mining, Geotechnical engineering, Mining engineering, Geology, Brittleness, Deformation (meteorology), Coal mining, Coal, Stress (linguistics), Engineering, Structural engineering, Oceanography, Thermodynamics, Waste management, Philosophy, Physics, LinguisticsTop concepts (fields/topics) attached by OpenAlex
- Cited by
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1Total citation count in OpenAlex
- Citations by year (recent)
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2023: 1Per-year citation counts (last 5 years)
- References (count)
-
35Number of works referenced by this work
- Related works (count)
-
10Other works algorithmically related by OpenAlex
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