巷道构造应力区顶板联合支护技术

Combined Support Technology of Roof in Structural Stress Zones under Roadway

针对5211巷掘进期间过X5陷落柱时,受构造应力影响巷道掘进至425 m处时顶板出现破碎、肩角煤柱垮落等现象,燕家河煤矿通过技术研究,分析了巷道过陷落柱应力区顶板破碎机理,并提出了"大锚杆支护+L型钢带+双顶梁钢棚"等联合支护措施。从实际应用效果来看,采取联合支护措施,控制了顶板破碎现象,取得了显著的应用成效。

When passing through X5 collapsed column during the driving of the 5211 roadway,the roof will be cracked and the shoulder coal pillar will collapse when the roadway was driven to 425 m under the influence of structural stress.In response to these phenomena,the mechanism of roof fracture was analyzed when passing through the collapse column stress zone under roadway in Yanjiahe Coal Mine by technical research.The combined support measures such as"large bolt support+L-shaped steel belt+double roof beam steel shed"were proposed in this paper.The practical application effect shows that the combined support measures can control the roof fracture,and can achieve significant application results.