隧洞口岩体变形监测与稳定性分析

Monitoring and Stability Analysis of Rock Mass Deformation at Tunnel Exit

基于科学、实时的岩体工程监测数据,并结合其变形发展规律,采用摩尔-库伦弹塑性模型的有限差分数值模拟方法,对隧洞出口岩体变形与稳定性做了分析与计算。位移计算结果与实际变形监测具有较好的一致性,风险预测结果对岩体开挖、支护设计与施工具有一定的指导意义。

Based on scientific and real-time monitoring data of rock mass engineering,combined with its rock mass deformation development law,the finite difference numerical simulation method of Mohr-Coulomb elastoplastic model is used to analyze and calculate the deformation and stability of rock mass at tunnel exit.The displacement calculation results are in good agreement with the actual deformation monitoring data.The risk prediction results have certain guiding significance for rock mass excavation,support design and construction.