In process of excavation and mining

the stress distribution of roadway surrounding rock is complex and changeable

therefore

real-time monitoring of roadway layer displacement and surrounding rock pressure is an important factor to guarantee roadway work normally. Design a kind of coal mine roadway on-line monitoring system based on FBG sensor network

which achieves 700 m downhole data acquisition

Inoue analysis and processing

and also provides time series trend variation

structure and distribution variation

threshold alarming

and other functions. According to characteristics of the Zhuxianzhuang coal roadway

system is installed 4 FBG displacement sensors

4 FBG earth pressure sensors and 4 FBG temperature sensors

and on-line monitoring on layer displacement

surrounding rock pressure and temperature variation of drivage area is carried out. Result of monitoring indicates that the system is sensitive to layer displacement

surrounding rock pressure and temperature variation of roadway

which effectively ensures roadway drivage on the rails

and provides data support and theoretical basis for the subsequent construction of roadway.