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Evolution Mechanism of Interconnected Vertical Fractures in the Overburden of Longwall Coal Mining
Joint Authors
Changchun, He
Weiyong, Lu
Wenhua, Zha
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-11-19
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
Whether a tensile failure fracture will penetrate a stratum is difficult to ascertain at present.
In view of this, the method of similar simulation and field verification are used to carry out a systematic study.
Similar simulations show that tensile failure fractures will penetrate the layered strata if the compressive stress is greater than the compressive strength.
Theoretical analysis points out that whether the tensile failure fractures will penetrate the layered strata can be expressed by the value of criterion of interconnected vertical fractures and the compression-tension ratio.
When the value of criterion of interconnected vertical fractures is greater than the compression-tension ratio, the layered strata will break.
This criterion was qualitatively verified with a field test.
The results of this paper are of great significance for the prevention of water inrush in coal mines, and it can also promote the understanding of the law of strata movement.
American Psychological Association (APA)
Changchun, He& Weiyong, Lu& Wenhua, Zha. 2020. Evolution Mechanism of Interconnected Vertical Fractures in the Overburden of Longwall Coal Mining. Geofluids،Vol. 2020, no. 2020, pp.1-12.
https://search.emarefa.net/detail/BIM-1166043
Modern Language Association (MLA)
Changchun, He…[et al.]. Evolution Mechanism of Interconnected Vertical Fractures in the Overburden of Longwall Coal Mining. Geofluids No. 2020 (2020), pp.1-12.
https://search.emarefa.net/detail/BIM-1166043
American Medical Association (AMA)
Changchun, He& Weiyong, Lu& Wenhua, Zha. Evolution Mechanism of Interconnected Vertical Fractures in the Overburden of Longwall Coal Mining. Geofluids. 2020. Vol. 2020, no. 2020, pp.1-12.
https://search.emarefa.net/detail/BIM-1166043
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1166043