Analysis of Interlayer Roof Structure and Breaking Model of Close-range Coal Seams
- DOI
- 10.2991/iceep-18.2018.191How to use a DOI?
- Keywords
- close seam;3DEC numerical simulationinter;floor roof;breaking law
- Abstract
Based on the analysis of the breaking of the roof between the lower layers of the short distance thin coal seam group with different spacing, it is proposed that the roof of the short distance thin coal seam can be divided into three types according to its lithology and the development of joints and cracks: the unstable interlayer roof structure. Medium stable interlayer roof structure and stable interlayer roof structure. The breakage mode of roof under different roof structure is also analyzed in this paper. The 3DEC numerical simulation model of different interstory roof structures is established, and the displacement and stress distribution of the roof between different propulsive distances are analyzed. It is concluded that the unstable interstory roof structure is broken by loose body. The structure of medium stable interlayer roof is block broken and stabilized interlayer. The roof structure is plate broken.
- Copyright
- © 2018, the Authors. Published by Atlantis Press.
- Open Access
- This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).
Cite this article
TY - CONF AU - Zhanjin Lu AU - Fei Ji AU - Zunyu Xu PY - 2018/09 DA - 2018/09 TI - Analysis of Interlayer Roof Structure and Breaking Model of Close-range Coal Seams BT - Proceedings of the 2018 7th International Conference on Energy and Environmental Protection (ICEEP 2018) PB - Atlantis Press SP - 1093 EP - 1098 SN - 2352-5401 UR - https://doi.org/10.2991/iceep-18.2018.191 DO - 10.2991/iceep-18.2018.191 ID - Lu2018/09 ER -