Theoretical Investigation of the Sliding Instability and Caving Depth of Coal Wall Workface Based on the Bishop Strip Method
Joint Authors
Li, Chao
Kang, Tianhe
Li, Xiaopo
Li, Ligong
Zhang, Xiaoyu
Zhang, Runxu
Source
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-09-08
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
As mining height increases, the influence of coal wall caving on safety production becomes stronger.
There is no systematic and effective method to analyse the risk of coal wall caving and its slip caving depth.
First, this paper established the Bishop mechanical model of sliding instability of coal wall, and then it deduced the general equation of a safety factor for every slip surface, which can be used to judge the stability of the coal body on the slip surface.
Moreover, taking the 8102 workface in the Wulonghu Mine, China, as an example, this paper evaluated the calculation method of slip surface safety factor in detail and obtained the critical slip surface position and the maximum slip depth of a coal wall.
Overall, the results showed that the maximum slip depth based on the Bishop strip method is more consistent with the measured data compared with other methods and thus has strong significance and practical engineering value for selecting the most suitable method and its parameters of regulating coal wall caving.
American Psychological Association (APA)
Li, Chao& Kang, Tianhe& Li, Xiaopo& Li, Ligong& Zhang, Xiaoyu& Zhang, Runxu. 2019. Theoretical Investigation of the Sliding Instability and Caving Depth of Coal Wall Workface Based on the Bishop Strip Method. Advances in Civil Engineering،Vol. 2019, no. 2019, pp.1-8.
https://search.emarefa.net/detail/BIM-1115905
Modern Language Association (MLA)
Li, Chao…[et al.]. Theoretical Investigation of the Sliding Instability and Caving Depth of Coal Wall Workface Based on the Bishop Strip Method. Advances in Civil Engineering No. 2019 (2019), pp.1-8.
https://search.emarefa.net/detail/BIM-1115905
American Medical Association (AMA)
Li, Chao& Kang, Tianhe& Li, Xiaopo& Li, Ligong& Zhang, Xiaoyu& Zhang, Runxu. Theoretical Investigation of the Sliding Instability and Caving Depth of Coal Wall Workface Based on the Bishop Strip Method. Advances in Civil Engineering. 2019. Vol. 2019, no. 2019, pp.1-8.
https://search.emarefa.net/detail/BIM-1115905
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1115905