Mining-Induced Stress-Fissure Field Evolution and the Disaster-Causing Mechanism in the High Gas Working Face of the Deep Hard Strata
Joint Authors
Yang, Ke
Chi, Xiaolou
Dou, Litong
Liu, Wenjie
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-14, 14 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-09-29
Country of Publication
Egypt
No. of Pages
14
Main Subjects
Abstract EN
The compound dynamic disaster of coal and gas outbursts and rockburst is a typical hazard jeopardizing the mining of the high gas content coal seam under a hard roof condition.
In this study, the hard roof’s mechanism inducing this hazard is analyzed.
Physical analog modeling experiments and in situ monitoring of mining-induced stress were performed during coal seam mining under a hard roof condition.
The pattern of hard roof breakage effect on the stress-fissure field evolution was revealed.
The elastic energy was released and propagated on both sides immediately after the hard roof breaking, leading to energy accumulation.
Meanwhile, expansive roof collapse resulted in the intense weighting of the working face and rockburst.
Thus, the coal and gas outburst occurred under the joint action of the impact energy generated by breaking the hard roof and gas expansion energy.
In other words, the compound dynamic disaster happened.
Synergistic stereoextraction integrating cross-seam drilling and along-seam drilling was combined with deep hole advanced presplitting blasting technology to cope with the compound dynamic disaster in the high gas coal seam under a hard roof condition.
American Psychological Association (APA)
Dou, Litong& Yang, Ke& Liu, Wenjie& Chi, Xiaolou. 2020. Mining-Induced Stress-Fissure Field Evolution and the Disaster-Causing Mechanism in the High Gas Working Face of the Deep Hard Strata. Geofluids،Vol. 2020, no. 2020, pp.1-14.
https://search.emarefa.net/detail/BIM-1165921
Modern Language Association (MLA)
Dou, Litong…[et al.]. Mining-Induced Stress-Fissure Field Evolution and the Disaster-Causing Mechanism in the High Gas Working Face of the Deep Hard Strata. Geofluids No. 2020 (2020), pp.1-14.
https://search.emarefa.net/detail/BIM-1165921
American Medical Association (AMA)
Dou, Litong& Yang, Ke& Liu, Wenjie& Chi, Xiaolou. Mining-Induced Stress-Fissure Field Evolution and the Disaster-Causing Mechanism in the High Gas Working Face of the Deep Hard Strata. Geofluids. 2020. Vol. 2020, no. 2020, pp.1-14.
https://search.emarefa.net/detail/BIM-1165921
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1165921