煤矿顺槽顶板钢带支护机理分析

Study on the Principle of the Strip in Coal Entry Bolt-system

通过研究发现巷道围岩和钢带的变形规律与传统的解析分析结果不同,结合这一现象运用材料力学做出了相关解释,指出钢带突起弯曲变形的原因是围岩体与钢带在变形过程中钢带在两个锚杆间产生压杆失稳的结果,这种压杆失稳现象会造成钢带支护失去其体系力学作用,用此分析结果来指导顺槽支护设计提出煤矿顺槽顶板支护钢带设计基本要领和支护断面与钢带的耦合作用。

The study found that the deformation law of surrounding rock and strip traditional analytic results. Use of this phenomenon, the mechanics of materials to make the explanation, pointed out that the the strip projec- tion bending deformation because the surrounding rock and the steel strip in the strip in the deformation process be- tween two bolt lever instability, such lever cause instability strip support lose the mechanical role of the system, with the results of this analysis to guide trough supporting the design to coal mine roof of support strip design basic essentials and support section and strip coupling effect.