大断面动压影响巷道锚注加固修复技术

Technology of bolting and grouting reinforcement and restoration in large section roadways under dynamical pressure

本文在分析济三煤矿北翼辅助运输巷变形破坏机理的基础上,提出了采用锚杆、锚索注浆加固修复巷道的技术方案,并确定了锚注加固的主要技术参数。北辅巷修复实践表明,巷道修复后的围岩表面位移值、顶板离层值、锚杆受力情况均符合设计和使用要求,在同类条件下,该技术具有广泛的推广应用前景。

Based on the deformation failure mechanism of North limb assistant carrying roadways in Jisan colliery,compound supporting technique with bolt,bolt rope and grouting to reinforce and restore the roadways is put forward in this paper,and the main parameters of bolting and grouting reinforcement are decided.The field experiments of north assistant roadways show the exterior deformation of surrounding rock,separation volume between roof layers and axial stress of the bolt are satisfied the designing and using demands.Therefore,the technology has a brilliant prospect in the same roadways.