Shield-Roof Interaction in Longwall Panels: Insights from Field Data and Their Application to Ground Control
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...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2018-01-01
|
| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2018/3031714 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832565040085991424 |
|---|---|
| author | Jingyi Cheng Zhijun Wan Yinlin Ji |
| author_facet | Jingyi Cheng Zhijun Wan Yinlin Ji |
| author_sort | Jingyi Cheng |
| collection | DOAJ |
| description | 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. |
| format | Article |
| id | doaj-art-82354f9172534d6baeeab480c29c8eed |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-82354f9172534d6baeeab480c29c8eed2025-02-03T01:09:34ZengWileyAdvances in Civil Engineering1687-80861687-80942018-01-01201810.1155/2018/30317143031714Shield-Roof Interaction in Longwall Panels: Insights from Field Data and Their Application to Ground ControlJingyi Cheng0Zhijun Wan1Yinlin Ji2State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Xuzhou, Jiangsu 221116, ChinaKey Laboratory of Deep Coal Resource Mining (CUMT), Ministry of Education of China, School of Mines, China University of Mining and Technology, Xuzhou, Jiangsu 221116, ChinaSchool of Civil and Environmental Engineering, Nanyang Technological University, 639798, SingaporeThe 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.http://dx.doi.org/10.1155/2018/3031714 |
| spellingShingle | Jingyi Cheng Zhijun Wan Yinlin Ji Shield-Roof Interaction in Longwall Panels: Insights from Field Data and Their Application to Ground Control Advances in Civil Engineering |
| title | Shield-Roof Interaction in Longwall Panels: Insights from Field Data and Their Application to Ground Control |
| title_full | Shield-Roof Interaction in Longwall Panels: Insights from Field Data and Their Application to Ground Control |
| title_fullStr | Shield-Roof Interaction in Longwall Panels: Insights from Field Data and Their Application to Ground Control |
| title_full_unstemmed | Shield-Roof Interaction in Longwall Panels: Insights from Field Data and Their Application to Ground Control |
| title_short | Shield-Roof Interaction in Longwall Panels: Insights from Field Data and Their Application to Ground Control |
| title_sort | shield roof interaction in longwall panels insights from field data and their application to ground control |
| url | http://dx.doi.org/10.1155/2018/3031714 |
| work_keys_str_mv | AT jingyicheng shieldroofinteractioninlongwallpanelsinsightsfromfielddataandtheirapplicationtogroundcontrol AT zhijunwan shieldroofinteractioninlongwallpanelsinsightsfromfielddataandtheirapplicationtogroundcontrol AT yinlinji shieldroofinteractioninlongwallpanelsinsightsfromfielddataandtheirapplicationtogroundcontrol |