基于顶板离层监测的锚固巷道稳定性控制

Controlled Stability of Rock Bolting Roadways Based on Roof Abscission Layer Monitor

在提出顶板离层概念的基础上 ,对顶板离层与锚固系统的变形协调条件以及离层临界值、失稳临界值及工程估计值的确定进行了分析 ;通过实例 ,说明了离层监测与反馈的应用 ;工程实践表明 ,采用顶板离层监测是锚固巷道稳定性控制的简易技术手段 ,其技术经济效果明显 。

Based on the concept of roof abscission layer, the coordinated deformation condition of the roof abscission layer and rock bolting system, and determination of the critical value of abscission layer, critical value due to stability loss and estimation of engineering value are analyzed. Application of engineering monitor and feedback are exemplified. Practices indicate that this rather simple technique could achieve significant technical and economic benefit, and would be worthy to be widely applied.