Research on Surrounding Rock Control Technology of Roadway Excavated in Residual Coal Pillar
- 10.2991/coal-18.2018.20How to use a DOI?
- old mining, residual coal pillar, grouting changing performance system, surrounding rock control, bolt-grouting support
In order to research surrounding rock control technology of roadway excavated in residual coal pillar, this article took excavation roadway in coal pillar that was between the two parallel empty roadways as the research background , used field investigation, theoretical analysis and calculation, similar material grouting test, numerical simulation analysis, field engineering application and other methods, Analyzed stress state in pillar when excavating in coal pillar; analyzed grouting reinforcement mechanism of cracked coal-rock mass the consolidation body strength and analyzed the diffusion radius of slurry through three-dimension broken coal-rock mass grouting changing performance system developed independently; researched stress and deformation damage of roadway surrounding rock after bolt-grouting through using numerical simulation software FLAC3D. Through field practice we can draw: that damage depth and deformation of roadway surrounding rock decreased through using bolt-grouting support way, besides, anchor and anchor cable can play a role effectively, bolt-grouting support can improve stability of roadway surrounding rock effectively.
- © 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 - Donghai Jiang AU - Tongxu Wang AU - Mingguang Zhang AU - Yuanjie Wang PY - 2018/10 DA - 2018/10 TI - Research on Surrounding Rock Control Technology of Roadway Excavated in Residual Coal Pillar BT - Proceedings of the 9th China-Russia Symposium "Coal in the 21st Century: Mining, Intelligent Equipment and Environment Protection" (COAL 2018) PB - Atlantis Press SP - 115 EP - 121 SN - 2352-5401 UR - https://doi.org/10.2991/coal-18.2018.20 DO - 10.2991/coal-18.2018.20 ID - Jiang2018/10 ER -