高应力软岩条件下巷道支护失稳机理及稳定性控制分析

Instability Mechanism and Stability Control Analysis of Roadway Support Under High-stress Soft Rock Condition

针对玉溪煤矿中央辅运大巷出现的严重变形破坏问题,采用了"锚网索+U型钢闭合环+底板注浆"联合支护方案。从现场勘查情况来看,新返修支护方案实现了对巷道围岩变形的有效控制。

In view of the serious deformation and damage of the central auxiliary haulage roadway in Yuxi Coal Mine, the combined support scheme of "Anchor Mesh Cable + U-shaped steel closed ring + base plate grouting" is adopted. According to the field investigation, the new support scheme can effectively control the deformation of surrounding rock.