Abstract: For hollow grouting anchor in the highlands stress soft rock roadway process for technical problems，Depth study of the failure mechanism of hollow grouting anchor，anchor grouting and bearing performance is optimized，thus achieving grouting and supporting the integration of the roof to prevent accidents. According to the site investigation of zhu ji mine routing anchor damage rate reached 83.4 percent，Occurs mainly in the vicinity of the shear locks and strand breakage and grout - anchor the interface shear slip phenomenon caused withdrawal anchor. Using mechanical calculations and numerical simulation method to analyze the stress FLAC3D anchor and mortar interface status and failure mechanism，Stress formula obtained grouting anchor and stress distribution，Through simulation experiments stress evolution of grouting anchor grouting under different effects，characteristics and evolution of shear slip displacement limit，And raised the pressure grouting anchor seismic devices and a slurry hole location optimization of key technologies，Field results show that the anchor damage rate decreased to 17.3%，the deformation of the roadway has been effectively controlled，grouting effect has been significantly improved.

Key words: Hollow grouting anchor cable, Performance optimization, Integrated technology of bolting and grouting, Limit load, Decompression seismic devices