【摘要】 煤柱合理宽度直接影响孤岛综放面沿空巷道围岩控制效果。针对8105孤岛综放面地质条件,提出采用锚梁网索联合支护技术控制围岩变形。基于8105轨道运输巷支护方案,采用非线性数值计算方法对不同宽度煤柱条件下围岩控制效果进行了优化分析,确定了合理煤柱宽度为6.5 m。实施效果表明了留设煤柱宽度合理,支护方案能有效控制巷道围岩变形,取得了满意的技术经济效果。更多还原

【Abstract】 The coal pillar’s rational width directly affects the gob-side entry surrounding rock control effect of the isolated fully mechanized caving face.Aiming at the geological conditions of the 8105 isolated fully mechanized caving face,and the combined supporting technique of wire meshes beam and cable anchor was put forward.Based on the support scheme of the 8105 track transport roadway,the nonlinear numerical calculation method was adopted to analyze the surrounding rock control effect under the condition of different coal pillar width.The project application effect indicated that the coal pillar width of 6.5 m was reasonable,and the supporting scheme can control the roadway’s deformation effectively,and the satisfactory technical and economic effects were obtained.更多还原