全长锚固技术在深井软岩巷道支护中应用研究

Application of full-length anchoring technology in deep soft rock roadway support

以淮南矿区丁集煤矿某采区轨道大巷穿越应力集中区为例进行巷道支护设计研究。针对轨道大巷所处地质条件,采用工程类比法和数值模拟优化法选取巷道最佳支护参数。通过对比选用全长锚固+锚索支护的方式,并结合巷道围岩变形观测表明,巷道支护整体性较好,围岩变形量较小,较好地解决了轨道大巷穿越应力集中区的巷道大变形问题,为工程的施工和设计提供了一定的参考意义。

In this paper,the design of roadway support is carried out by taking the stress concentration area of a mining track in a mining area of Dingji Coal Mine in Huainan Mining Area as an example.According to the geological conditions of the track and alleys,the optimal support of the roadway is selected by engineering analogy method and numerical simulation optimization method.parameter.The support system with full-length anchoring+long anchoring+anchor cable support shows that the roadway surrounding rock deformation observation shows that the roadway support has better integrity and the surrounding rock deformation is small,which better solves the tunnel roadway crossing stress.Large deformation of the roadway in the concentration area.It provides a certain reference for the construction and design of the project.