A Study on the Stability of Surrounding Rocks in Rock Fracture Zones for Tunnel Crossing with Deep Buried Mining Method
Based on the engineering of a deep buried tunnel crossing a rock fragmentation zone in a certain section of Qingdao Metro,the deformation mechanism of the surrounding rock mass of the tunnel was analyzed.Through the use of Midas finite ele-ment software,the deformation of the surrounding rock during tunnel excavation and support was simulated and analyzed.Com-bined with actual monitoring data on site,the comparative analysis showed that the numerical analysis results were consistent with the measured data,which can be used as a basis for construction;For deep buried tunnels that pass through rock fragmen-tation zones,the arch crown and arch bottom are dangerous areas for rock instability during construction;The use of support pa-rameters in this project can effectively ensure the stability of the surrounding rock support structure,providing engineering ex-perience for similar projects.
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