Abstract: For the defect of steel bolt used in the soft and broken rocks of Jinshandian Iron Mine，a field test had been tested which using GFRP bolting in the mining area of -242 m level of Yuhua Temple，and staggered arrangement of deformation monitoring network in test approaches，constructed roadway deformation displacement and convergence rate time series，analysis the effect of GFRP bolting，and had known the deformation characteristics and the relationship between the roof and two bands of the testing tunnel.According to the form of damage of roadway，proposed a supporting way which used GFRP bolt together with the prestressed metal nut to improve support effect，could effective maintain the stability of the roadway.

Key words: Roadway engineering, GFRP bolt, Support, Monitor, Deformation displacement