Research on the Deformation Mechanism and Control Technology Application of Surrounding Rock in Large Section Tunnels
In order to solve the problem of poor stability of surrounding rock in large section tunnels under goaf,Tongde Mine takes the 5316 working face as the engineering background.Through a combination of theoretical analysis and numerical simulation,the stress environment changes of the bearing structure of large section tunnels under complex geological conditions,the deformation and failure performance of tunnels,the deep reasons for roof anchor cable breakage,and the control technology of tunnel surrounding rock are studied.Using FLAC 3D to simulate the failure pattern of the working face after mining,optimizing the support parameters,and ultimately determining the support plan.Through on-site deformation monitoring,the deformation of the surrounding rock in the roadway has been effectively controlled,and the new support scheme is relatively ideal in terms of support effect and cost control.
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