Theory and Application of Gob-Side Entry Retaining in Thick Three-Soft Coal Seam
With the characteristic of less roadway excavation and high resource recovery, gob-side entry retaining (GER) technology is a safe and efficient green mining technology. Many experts and scholars have done extensive research on its principle and application. However, GERs are rarely used in thick so...
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| Published in | Geofluids Vol. 2021; pp. 1 - 16 |
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| Main Authors | , |
| Format | Journal Article |
| Language | English |
| Published |
Chichester
Hindawi
02.07.2021
John Wiley & Sons, Inc Wiley |
| Subjects | |
| Online Access | Get full text |
| ISSN | 1468-8115 1468-8123 1468-8123 |
| DOI | 10.1155/2021/6157174 |
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| Abstract | With the characteristic of less roadway excavation and high resource recovery, gob-side entry retaining (GER) technology is a safe and efficient green mining technology. Many experts and scholars have done extensive research on its principle and application. However, GERs are rarely used in thick soft coal seams. In this paper, based on the geological conditions of a coal mine in China, we propose a novelty approach of GER in thick three-soft coal seam (it means a single seam with a soft roof and a soft floor). The engineering scheme includes roadway expansion, large section roadway support, cutting roof to relieve pressure, and road-inside backfill body construction. The established mechanical and numerical calculation models effectively guide the engineering practice. Field observations showed that all the processes met the requirements of field production. The research results could provide theoretical guidance for the application of GER under similar geological conditions. |
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| AbstractList | With the characteristic of less roadway excavation and high resource recovery, gob-side entry retaining (GER) technology is a safe and efficient green mining technology. Many experts and scholars have done extensive research on its principle and application. However, GERs are rarely used in thick soft coal seams. In this paper, based on the geological conditions of a coal mine in China, we propose a novelty approach of GER in thick three-soft coal seam (it means a single seam with a soft roof and a soft floor). The engineering scheme includes roadway expansion, large section roadway support, cutting roof to relieve pressure, and road-inside backfill body construction. The established mechanical and numerical calculation models effectively guide the engineering practice. Field observations showed that all the processes met the requirements of field production. The research results could provide theoretical guidance for the application of GER under similar geological conditions. |
| Audience | Academic |
| Author | Shen, Junchao Zhang, Ying |
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| Cites_doi | 10.1016/j.ijmst.2019.12.019 10.1016/j.ijmst.2020.07.006 10.1016/j.enggeo.2016.05.016 10.1016/j.ijmst.2020.06.007 10.1007/s12665-021-09648-w 10.1007/s11069-021-04594-z 10.1016/j.ijmst.2020.06.003 10.1007/s11069-020-04388-9 10.1016/j.ijmst.2020.01.003 10.1016/j.enpol.2019.02.031 10.1016/j.ijmst.2020.06.002 10.1016/j.ijmst.2018.10.006 10.1016/j.ssci.2011.09.010 10.1016/j.ijmst.2020.08.002 10.3390/en10111785 10.1016/j.ijmst.2019.03.003 10.1016/j.enpol.2017.07.001 10.1007/s10064-021-02250-1 10.1007/s11069-020-04337-6 10.1016/j.ijmst.2019.12.010 10.3390/en11102539 10.1016/j.ijrmms.2016.01.017 10.1016/j.ijrmms.2013.02.009 10.1155/2019/1354652 |
| ContentType | Journal Article |
| Copyright | Copyright © 2021 Junchao Shen and Ying Zhang. COPYRIGHT 2021 John Wiley & Sons, Inc. Copyright © 2021 Junchao Shen and Ying Zhang. This is an open access article distributed under the Creative Commons Attribution License (the “License”), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. https://creativecommons.org/licenses/by/4.0 |
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| SubjectTerms | Bituminous coal Coal Coal industry Coal mines Coal mining Design Dredging Engineering Excavation Geology Masonry Mineral industry Mines Mining accidents & safety Mining industry Occupational health and safety Resource recovery Roads & highways Roofs Technology |
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| Title | Theory and Application of Gob-Side Entry Retaining in Thick Three-Soft Coal Seam |
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