通过对顶板安全仪器仪表检测合格率低的要因分析，制定出相应的对策，使煤矿顶板安全仪器仪表检测合格率明显提高。
Through the analysis on main factors that cause low qualification rate at the roof safety meters, corresponding counter measure has been made, resulting in obvious increase at qualification rate.
顶板离层是锚杆支护巷道最大的安全隐患之一。
The roof abscission layer is the biggest security hidden danger in bolting support tunnel.
应用表明，采场顶板长锚索预锚固技术施工安全，成本低，支护效果好，值得推广应用。
The application of this technique shows that it is well worth developing because of its safe construction, low cost and good supporting effects.
应用推荐