Analysis of Pressure Relief Effect on the Protective Layer of Hard Roof and Extra-Thickness Coal Seam Mining

Analysis of Pressure Relief Effect on the Protective Layer of Hard Roof and Extra-Thickness Coal... Geotech Geol Eng https://doi.org/10.1007/s10706-018-0600-1 ORIGINAL PAPER Analysis of Pressure Relief Effect on the Protective Layer of Hard Roof and Extra-Thickness Coal Seam Mining Zhongchang Wang Wenrui Bian Received: 31 March 2018 / Accepted: 4 June 2018 Springer International Publishing AG, part of Springer Nature 2018 Abstract The roof of Tashan coal mine was hard compacted with the advance of the working face. The and difficult to fall. In the process of fully mechanized maximum principal stress of the liberated layer was W coal caving in the Carboniferous extra-thick coal type distribution. The expansion deformation of 3–5 seam, the strong pressure and rock burst appeared in coal was M type distribution. The working resistance the working face. To obtain the pressure relief effect of of the 8107 working face was mainly distributed in the exploitation of Shan 4 protective seam in Tashan 8000–12,000 kN. The working resistance of the 8108 coal mine, The stress distribution and displacement working face was mainly distributed in variation of the roof and floor of Shan 4 protective 4000–10,000 kN. The vertical stress of the roof of layer were obtained by numerical simulation. And by the 3–5 coal was decreased by about 30% after mine http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Geotechnical and Geological Engineering Springer Journals

Analysis of Pressure Relief Effect on the Protective Layer of Hard Roof and Extra-Thickness Coal Seam Mining

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Publisher
Springer International Publishing
Copyright
Copyright © 2018 by Springer International Publishing AG, part of Springer Nature
Subject
Earth Sciences; Geotechnical Engineering & Applied Earth Sciences; Hydrogeology; Terrestrial Pollution; Waste Management/Waste Technology; Civil Engineering
ISSN
0960-3182
eISSN
1573-1529
D.O.I.
10.1007/s10706-018-0600-1
Publisher site
See Article on Publisher Site

Abstract

Geotech Geol Eng https://doi.org/10.1007/s10706-018-0600-1 ORIGINAL PAPER Analysis of Pressure Relief Effect on the Protective Layer of Hard Roof and Extra-Thickness Coal Seam Mining Zhongchang Wang Wenrui Bian Received: 31 March 2018 / Accepted: 4 June 2018 Springer International Publishing AG, part of Springer Nature 2018 Abstract The roof of Tashan coal mine was hard compacted with the advance of the working face. The and difficult to fall. In the process of fully mechanized maximum principal stress of the liberated layer was W coal caving in the Carboniferous extra-thick coal type distribution. The expansion deformation of 3–5 seam, the strong pressure and rock burst appeared in coal was M type distribution. The working resistance the working face. To obtain the pressure relief effect of of the 8107 working face was mainly distributed in the exploitation of Shan 4 protective seam in Tashan 8000–12,000 kN. The working resistance of the 8108 coal mine, The stress distribution and displacement working face was mainly distributed in variation of the roof and floor of Shan 4 protective 4000–10,000 kN. The vertical stress of the roof of layer were obtained by numerical simulation. And by the 3–5 coal was decreased by about 30% after mine

Journal

Geotechnical and Geological EngineeringSpringer Journals

Published: Jun 6, 2018

References

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