Study on the Roof Dynamic Monitoring Integration Technique

The death ratio of the roof accidents is about 40% of all deaths in China collieries.About 80% of the roof accidents occur on the working face.When the information such as the abscission and breaking state (including the breaking time and location)of the terrane are monitored and acquired, the roof collapse can be forecasted and then the relevant control measures to avoid the roof accidents implemented.To integrate the existing systems for monitoring the support working resistance,the roof abscission layer,the bolt stress,drilling stress and so on,so as to real-time display all lu'nds of stress and displacement alternation,thus the dynamic monitoring for each roof can be realized, which provides a strong foundation for the colleriry production with safety and high efficiency.