煤矿安全2019，Vol.50Issue(8)：166-172,7.DOI:10.13347/j.cnki.mkaq.2019.08.041
采动影响下煤柱巷道布置优化研究
Study on Coal Pillar Roadway Layout Optimization Under Mining
李成海 1柏建彪2
作者信息
- 1. 中国矿业大学 矿业工程学院,江苏 徐州221116
- 2. 中国矿业大学 煤炭资源与安全开采国家重点实验室,江苏 徐州221116
- 折叠
摘要
Abstract
To further study the layout horizon of roadway and the width of coal pillar after mining working face of upper section in thick coal seam, the 6208 working face of a mine in Shanxi Province is taken as the background of the project. A combination method of theoretical analysis and numerical simulation is used. Under the influence of mining, the width of coal pillar is calculated to be 7 m and the stress distribution characteristics of coal pillar are analyzed. The distribution of deformation and stress in the roof and floor, solid coal sidewall, pillar sidewall of the roadway and pillar on one side of the roadway under the roadway is excavated along the roof or floor of coal seam are analyzed by UDEC numerical software. It is found that the optimal pillar width is also different when the horizon of roadway is different. Compared with the wide pillar, the narrow pillar has a fairly stable effect on the pillar roadway, which is more conducive to the conservation and recovery of coal resources. Under the condition of permissible deformation, the test roadway is driven along the floor of coal seam, and the width of the pillar is 7 m finally, and the surrounding rock has good control effect.关键词
采动影响/煤柱巷道/煤柱宽度/巷道层位/数值模拟Key words
mining influence/pillar roadway/pillar width/horizon of roadway/numerical simulation分类
矿业与冶金引用本文复制引用
李成海,柏建彪..采动影响下煤柱巷道布置优化研究[J].煤矿安全,2019,50(8):166-172,7.
