The deformation mechanism of soft coal roadway under dynamic mining influence and its optimization support design
- 10.2991/icadme-15.2015.144How to use a DOI?
- Soft coal roadway; Dynamic mining pressure; Surrounding rock control; Optimization support
In light of the coal roadway deformation and breakage problems in soft rock conditions under dynamic pressure influence, based on coupled-supporting principle, combined theories and computer numerical simulation, the floor heave and spalling mechanism under the influence of multiple mining activities were analyzed and a rational pillar size was calculated and bolt-cable coupling improvement support projects were designed on the basis of the original support plan. The study result shows that it was expansion-flexural composite of floor heave and rib spalling affected by coal pillar size. It can effectively control the volume expansion at the roadway bottom plastic zone and reduce the impact of the surrounding rock pressure of two sides on the floor by increasing coal pillar size to 25m and using “add floor rock bolt & increase support density in two sides of roadway & enlarge anchor length” comprehensive reinforced support means.
- © 2015, 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 - Z.G. Sun AU - Y. Gou AU - J. Yang AU - Z.W. Bi AU - S.G. Li PY - 2015/10 DA - 2015/10 TI - The deformation mechanism of soft coal roadway under dynamic mining influence and its optimization support design BT - Proceedings of the 5th International Conference on Advanced Design and Manufacturing Engineering PB - Atlantis Press SP - 726 EP - 732 SN - 2352-5401 UR - https://doi.org/10.2991/icadme-15.2015.144 DO - 10.2991/icadme-15.2015.144 ID - Sun2015/10 ER -