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Analytical Analysis and Field Observation of Break Line in the Main Roof over the Goaf Edge of Longwall Coal Mines
Joint Authors
Guangchao, Zhang
Fulian, He
Lishuai, Jiang
Source
Mathematical Problems in Engineering
Issue
Vol. 2016, Issue 2016 (31 Dec. 2016), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2016-10-13
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
This paper presents an integrated approach for analytical analysis and field tests to estimate the break line in a main roof over the goaf edge.
An analytical model which treated the main roof as a beam seating on the Winkler foundation and subjected to nonuniformity roof loading was established.
Further analysis of the bending moment distribution of such a main roof beam was undertaken.
Based on the geological conditions pertaining to a case study at Wangjialing coal mine, Shanxi Province, China, the break line in the main roof in a typical longwall panel was calculated in the rib-sides at a distance of 5.6 to 7.4 m from the goaf edge.
The influence of main roof flexural rigidity and foundation rigidity and so forth on the bending moment distribution was revealed by a parametric study.
Borehole camera detection was employed to further validate the analytical model and its results.
The results of the field test demonstrated that the break line detected in the main roof was about 5.5 to 6.8 m away from the goaf edge, which was in good agreement with the analytical model.
American Psychological Association (APA)
Guangchao, Zhang& Fulian, He& Lishuai, Jiang. 2016. Analytical Analysis and Field Observation of Break Line in the Main Roof over the Goaf Edge of Longwall Coal Mines. Mathematical Problems in Engineering،Vol. 2016, no. 2016, pp.1-11.
https://search.emarefa.net/detail/BIM-1112215
Modern Language Association (MLA)
Guangchao, Zhang…[et al.]. Analytical Analysis and Field Observation of Break Line in the Main Roof over the Goaf Edge of Longwall Coal Mines. Mathematical Problems in Engineering No. 2016 (2016), pp.1-11.
https://search.emarefa.net/detail/BIM-1112215
American Medical Association (AMA)
Guangchao, Zhang& Fulian, He& Lishuai, Jiang. Analytical Analysis and Field Observation of Break Line in the Main Roof over the Goaf Edge of Longwall Coal Mines. Mathematical Problems in Engineering. 2016. Vol. 2016, no. 2016, pp.1-11.
https://search.emarefa.net/detail/BIM-1112215
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1112215