摘要
为了对特厚煤层综放面合理不放煤距离分析,文中结合8105工作面工况条件,建立了数值模拟模型,建立了不放煤距离分别为80 m、50 m、20 m、0 m时,支承压力对1070大巷及8105工作面中部回风巷的影响;在合理的停采线煤柱宽度的基础上,研究在不放煤距离为80 m、50 m、20 m和0 m时煤壁坍塌对停采线煤柱及巷道应力及围岩变形的影响。
In order to analyze the reasonable non-caving distance of fully mechanized top coal caving face in extra-thick seam, a numerical simulation model is established based on the working conditions of 8105 working face.When the non-caving distance is 80 m, 50 m, 20 m and 0 m respectively, the influence of abutment pressure on the central air return lane of 1070 main roadway and 8105 working face is established. Based on the reasonable width of coal pillar in stopping line, the influence of coal wall collapse on the stress and deformation of coal pillar and roadway in stopping line and surrounding rock is studied when the distance of non-caving is 80 m, 50 m, 20 m and 0 M.
作者
鲍永强
BaoYongqiang(Coal Industry Fenxi Mining Area Construction Project Quality Supervision Station,JiexiuShanxi 032000)
出处
《山西冶金》
CAS
2019年第1期48-49,79,共3页
Shanxi Metallurgy
关键词
特厚煤层
综放工作面
不放煤距离
extra-thick coal seam
fully mechanized top-coal caving face
non-caving distance
