Shield-Roof Interaction in Longwall Panels: Insights from Field Data and Their Application to Ground Control
Joint Authors
Cheng, Jingyi
Wan, Zhijun
Ji, Yinlin
Source
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-18, 18 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-12-16
Country of Publication
Egypt
No. of Pages
18
Main Subjects
Abstract EN
The shield-roof interaction as mining proceeds in longwall panels remains unclear, hindering the further increase of longwall productivity.
To uncover the mechanisms of shield-roof interaction, using our self-developed Status of Shield and Roof IntelliSense (SSRI) system, we investigated the effects of idle time, retreating rate, setting pressure, yielding, and shearer’s cutting, as well as neighboring shields’ advance on the spatial-temporal evolution of leg pressure and leg closure of shields.
Our results show that the shield-roof interaction is not only dependent on the shield capacity, but also collectively determined by the time-related factors, the geological condition, the setting pressure, yielding characteristics, and mining method.
Understanding the shield-roof interaction in longwall panels enables us to apply the SSRI system for ground control in longwall coal mines.
Early warning of severe roof weighting can be achieved by establishing a warning model based on the decision tree algorithm.
Apart from this, we can also assess the working condition of yield valve and diagnose fluid leakage of shield cylinder using the SSRI system.
Finally, we propose the research prospects on shield-roof interaction in longwall panels to achieve a more reasonable determination of shield capacity, prediction of roof fall and coal wall spalling, and self-adaptive control of the shield.
American Psychological Association (APA)
Cheng, Jingyi& Wan, Zhijun& Ji, Yinlin. 2018. Shield-Roof Interaction in Longwall Panels: Insights from Field Data and Their Application to Ground Control. Advances in Civil Engineering،Vol. 2018, no. 2018, pp.1-18.
https://search.emarefa.net/detail/BIM-1115769
Modern Language Association (MLA)
Cheng, Jingyi…[et al.]. Shield-Roof Interaction in Longwall Panels: Insights from Field Data and Their Application to Ground Control. Advances in Civil Engineering No. 2018 (2018), pp.1-18.
https://search.emarefa.net/detail/BIM-1115769
American Medical Association (AMA)
Cheng, Jingyi& Wan, Zhijun& Ji, Yinlin. Shield-Roof Interaction in Longwall Panels: Insights from Field Data and Their Application to Ground Control. Advances in Civil Engineering. 2018. Vol. 2018, no. 2018, pp.1-18.
https://search.emarefa.net/detail/BIM-1115769
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1115769