采动应力影响下巷道变形破坏机理及加固技术

Failure mechanism and reinforcement technology of roadway deformation under the influence of mining stress

为了揭示留巷巷道变形破坏机理,文中分析了留巷巷道围岩裂隙发育规律和围岩变形特征。针对分析结果提出了注浆加固方案,现场应用表明:注浆加固有效提高了围岩的完整性和强度,高预应力注浆锚索有效控制了留巷巷道进一步变形破坏。

In order to reveal the failure mechanism of retaining roadway deformation, the development law of surrounding rock fracture and the deformation characteristics of surrounding rock were analyzed. In view of the analysis results, the grouting reinforcement scheme was put forward. The field application showed that the integrity and the strength of the surrounding rock were improved effectively by the grouting reinforcement, and the high prestress grouting anchor cable could effectively control the further deformation and damage of the roadway.