近距离煤层采动影响下采区大巷围岩控制技术研究

Research on surrounding rock control technology of mining roadway under the influence of coal seam mining in close distance

为解决3#煤层胶带大巷在现有支护方式下巷道围岩变形量大的问题,通过对胶带大巷进行具体分析,决定采用采场远距离及关键层钻孔爆破卸压技术,结合动压巷道的控制技术的原理对巷道修复方案进行具体设计,并对支护后的巷道进行矿压监测,结果表明:修复方案实施后,顶底板的最大移近量为449mm,两帮最大移近量为130mm,保证了巷道围岩的稳定。

In order to solve the problem of large deformation of surrounding rock in the roadway of 3#coal seam belt in the existing support mode,through the specific analysis of the belt roadway,it is decided to adopt the long distance of the stope and the key layer drilling and blasting pressure relief technology.The principle of control technology of dynamic pressure roadway is designed specifically for the roadway repair scheme,and the mine pressure monitoring is carried out on the roadway after support.The results show that after the repair scheme is implemented,the maximum displacement of the top and bottom plates is 449mm,and the maximum displacement of the two gangs The near amount is 130mm,which ensures the stability of the surrounding rock of the roadway.