煤矿采掘交锋期间掘进巷道支护设计研究

Design of Tunnel Support for Excavation Roadway during Coal Mining Intersection

在对煤矿地下埋藏煤层开采后,会引起空间围岩应力重新分布,巷道在掘进的过程中受采动压力、构造应力等作用力的影响,巷道围岩会出现不同程度变形,顶板会出现局部冒顶、破碎等情况,尤其是在临空动压掘进期间显现得更为明显。基于此,对受强烈采动影响巷道、沿空掘巷等复杂条件支护设计进行论述,真正实现了锚杆锚索的主动、及时支护,充分发挥了锚杆锚索的支护作用,减少了巷道围岩变形与破坏,保证巷道掘进期间的安全。

After mining the underground buried coal seam in coal mine,it will cause the redistribution of space surrounding rock stress,and the roadway wil be affected by the mining pressure,tectonic stress and other forces in the process of digging,and the surrounding rock of the roadway will be deformed to different degrees,and the top plate will be partially roofed,broken,etc.Especially in the pro-air dynamic pressure during the digging period,it is more obvious.Based on this,the support design of the tunnel affected by strong mining action,along the air excavation and other complex conditions are discussed,and the active and timely support of anchor rods and anchors is really realised,giving full play to the support role of anchor rods and anchors,reducing the deformation and damage of the tunnel peripheral rock,and guaranteeing the safety during the roadway excavation.