Deformation characteristics of surrounding rock of deep soft rock roadway and mechanism of full anchor cable supporting

In view of the large deformation of surrounding rock and the deformation and failure of supporting components in the original return air lane 9102 of Xinyuan coal mine, the crack development, the deformation and failure characteristics of surrounding rock in the original return airway under the action of complex high horizontal stress and vertical stress field are analyzed, and a new return airway is excavated at 20 m of the original return airway.In this paper, the stress environment of surrounding rock in the newly excavated return airway is analyzed by means of numerical simulation.The field monitoring shows that the surrounding rock deformation of the roadway is reduced obviously and the supporting components have no deformation and failure after adopting the full anchor cable supporting technology in the new excavation return airway, which realizes the surrounding rock control of deep soft rock roadway.