低密度高强度支护技术在8118工作面煤巷的应用

Application of Low Density and High Strength Supporting Technology in Coal Roadway of 8118 Working Face

为解决8118工作面回风巷在现有支护方式下巷道围岩变形量大的问题,通过对回风巷的地质情况进行具体分析,决定采用低密度高强度支护技术,结合低密度高强度支护原理对回风巷的支护方案进行具体设计,并对支护后的巷道进行矿压监测。结果表明:支护方案实施后,顶底板的最大移近量为144mm,两帮最大移近量为166mm,保证了巷道围岩的稳定。

In order to solve the problem that the deformation of the surrounding rock of the roadway in the 8118 working face is severe in the existing support mode,through the specific analysis of the geological conditions of the return airway,it is decided to adopt low-density and high-strength supporting technology.Base on the principle of low-density and high-strength support,the supporting scheme of return airway is designed in detail and the mine pressure monitoring in the roadway is carried out after supporting.The results show that the maximum roof-to-floor convergence is 144mm,and the maximum convergence of the two gangs is 166mm after the supporting scheme is implemented,which ensures the stability of the surrounding rock of the roadway.