中文摘要：

在浅埋大断面大跨度双连拱隧道开挖过程中，对隧道进出口边坡点、地表点、拱顶下沉量等进行了监控量测，分析了隧道进出口边坡点、地表点、拱顶下沉量和隧道上覆岩层随开挖的运动变化规律及隧道结构的受力情况。数值模拟结果表明，浅埋大跨度双连拱隧道开挖施工对相邻隧道的受力状态和稳定性会产生很大的影响，施工过程中应加强对中导洞、隧道进出口等的监测，掌握连拱隧道开挖左右洞相互影响的规律，及时反馈指导施工，并采取相应的支护措施，确保施工安全。

英文摘要：

Monitoring and measuring of new Austrian tunnelling method （NATM） was conducted with a Leica TCA2003 Total Station and an XP99 Cymometer in a shallowly-buried long-span tunnel. The deformation and movement of country rock in tunnel were obtained to guide tunnel construction. Based on the country rock deformation, the optimum time for primary and permanent support was applied. Optimum timing successfully can avert accidents in construction and enhance construction quality. Numerical simulation indicates that tunnel excavation may have great influence on surrounding rock stability. It is important to reinforce monitoring to relevant locations during the construction process, to have timely feedback to guide construction, to adopt corresponding shoring measures, and to ensure construction safety.