特长隧道安全建造技术和适应隧道高质量、高效率建设的管理水平亟待研究与提高。秦岭终南山特长公路隧道是典型洞室群工程，断面结构多，新开挖隧道还要多次跨越既有公路、铁路隧道，其空间结构、受力特点异常复杂。通过工程地质调查、室内实验和现场监测等方法及手段，开展了秦岭终南山特长公路隧道洞群稳定性评价。 现场调查表明：跨越工程地质单元多，水文地质条件复杂，工程地质问题复杂，且有岩爆及诱发其他工程灾害的可能性。基于室内实验测试，获得了岩石物理力学性态及相关指标参数，为现场围岩稳定性控制对策提供依据。 采用FLAC3D程序对秦岭终南山特长公路隧道及洞群进行数值模拟，结果表明：在通风系统的施工中，风道跨越隧道和四连拱区域位移变化量大，应力状态复杂。四连拱段附近拱脚为高应力集中区域，具有岩爆动力破坏倾向。借助综合监测，减缓隧道围岩超-欠挖。根据现场综合监测的结果分析，优化了施工设计方案，成功控制了隧道表面变形，实现了快速施工，提高了隧道洞群建造效率。研究成果对同类条件下公路隧道洞群安全施工与高效建造具有借鉴价值。

Safety construction technology in extra-long tunnel and adapting to high quality and efficient management are important to be researched and improved.Zhongnanshan tunnel is a typical tunnel group project.There are many sections and geological structure，and new excavation tunnels will span the existing roads and rail tunnels several times，its spatial structure and mechanical characteristics are very complex.According to the methods and means，including to field geological investigation，experiment and field monitoring，etc.，the stability of tunnels were monitored and predict. The in-situ investigation showed that the Zhongnanshan tunnels spaned many engineering geology units.The character of engineering geological are very complex.And there had rockburst-prone and other engineering disasters. Based on laboratory tests，the physical and mechanical behavior of rock and parameters were achieved，which provides basis for the site construction decisions. In terms of FLAC3D numerical computation and analysis showed taht the displacement of across the tunnel in air duct and four-arch was large，the stress state was very complex in the construction of ventilation systems.Fourth-arch high arch foot section near is the stress concentration region，where had a prone of dynamic failure and rockburst.The over-less excavation of surrounding rock of tunnels was decreased based on hybrid monitoring. The blasting parameters and design are adjusted，the blasting effect and the disturbance of the main tunnel destruction were successfully controled.All of these achieved a rapid construction and improves efficiency of the tunnel.The research provides a reference for the safe construction and efficient construction to the others same conditions tunnels.