深部大巷围岩支护优化设计研究

Optimization Design of Rock Support of Deep Alleys

以某矿的围岩性质、地质特征为依据,在充分分析原有支护破坏原理的情况下,以FLAC3D为技术手段,提出了长锚杆顶锚索不对称二次联合支护的对策。通过对模拟结果的分析,得到巷道的围岩变形量控制在了安全范围以内,为该类矿井的支护提供了设计参考。

Deep large deformation of roadway has been plagued by deep mining of the mine.With of the nature of the surrounding rock mine,geological characteristics as the basis,in the case of a fully analysis the original supporting damage principle,technology mainly by means of FLAC3 D,puts forward the long bolt top countermeasures of asymmetric secondary anchor combined support,which is obtained by the analysis of simulation results,the deformation of surrounding rock of tunnel control within the scope of security,prove that the support scheme is put forward scientific and reasonable,and provides the support of the mine design reference.