Investigation on the Ground Pressure Induced by Hard Roof Fracturing at Different Layers during Extra Thick Coal Seam Mining
Joint Authors
Liu, Hongjie
Gao, Rui
Yang, Jingxuan
Kuang, Tiejun
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-15, 15 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-11-05
Country of Publication
Egypt
No. of Pages
15
Main Subjects
Abstract EN
The fracturing of hard roofs in different layers would result in complex ground pressure on the working face, such as supports collapsed and severe roadway deformation.
However, the mechanism of the ground pressure induced by hard roof fracturing in different layers is still unclear.
In the paper, a physical model of a 20 m extrathick coal seam mined with hard roofs existing was established based on the physical simulation similarity criterion.
The overburden fracturing structure, abutment stress distribution, and failure characteristics of the coal body were monitored by a noncontact strain measurement system and resistance strain gauges, to reveal the mechanism of ground pressure induced by hard roof fracturing.
Furthermore, on-site measurement was used to monitor and analyze the ground pressure affected by hard roofs in different levels.
The results provide a theoretical basis for the control of ground pressure in extrathick coal seam mining with hard roofs.
American Psychological Association (APA)
Gao, Rui& Yang, Jingxuan& Kuang, Tiejun& Liu, Hongjie. 2020. Investigation on the Ground Pressure Induced by Hard Roof Fracturing at Different Layers during Extra Thick Coal Seam Mining. Geofluids،Vol. 2020, no. 2020, pp.1-15.
https://search.emarefa.net/detail/BIM-1165692
Modern Language Association (MLA)
Gao, Rui…[et al.]. Investigation on the Ground Pressure Induced by Hard Roof Fracturing at Different Layers during Extra Thick Coal Seam Mining. Geofluids No. 2020 (2020), pp.1-15.
https://search.emarefa.net/detail/BIM-1165692
American Medical Association (AMA)
Gao, Rui& Yang, Jingxuan& Kuang, Tiejun& Liu, Hongjie. Investigation on the Ground Pressure Induced by Hard Roof Fracturing at Different Layers during Extra Thick Coal Seam Mining. Geofluids. 2020. Vol. 2020, no. 2020, pp.1-15.
https://search.emarefa.net/detail/BIM-1165692
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1165692