注浆与锚索联合加固技术在软岩巷道中的应用

Application of combined reinforced technology with grouting and anchor to mine soft rock roadway

下霍煤矿副井马头门及周边硐室围岩具有典型的软岩特征,采用传统的锚网索喷支护配合钢筋混凝土浇注的支护方式,出现了不同程度的破坏。在分析软岩硐室变形与破坏机理的基础上,提出并采用注浆与锚索联合加固技术,获得了比较合理的支护加固参数,井下应用中围岩变形得到有效控制,取得了良好的加固效果。

The surrounding rocks of the ingate and the chambers near the mine auxiliary shaft of Xiahuo Mine,Shanxi Sanyuan Coal Mining Company Ltd.,had the typical soft rock features.The surrounding soft rocks were supported with traditional bolt-steel mesh-anchor-shotcreting support and reinforce concrete liner.There were different failures occurred on those supports.Based on the analysis of the deformation and failure mechanism of the soft rock chambers,a combined reinforced technology with the grouting and anchors...