针对大连地铁二号线某标段钻爆法暗挖盾构机引入段采取的施工监测方法，对施工过程中引起的隧道变形、周围地表及建筑物沉降进行分析, 利用midas GTS软件建立隧道三维有限元模型，对施工过程中隧道变形及围岩状态进行动态数值模拟，并将模拟结果与实际监测数据对比，掌握施工过程中土层扰动规律，准确分析各类沉降变形原因，对隧道围岩状态稳定性及支护结构安全性作出预测和评价.同时，为类似工程设计与施工提供借鉴.

According to the construction and monitoring method taken in the drilling and blasting subsurface excavation for shield machine introduced segment of Dalian metro line No.2, the paper analyzed the variation of the settlement of surrounding ground and buildings caused by the construction. And with the aid of midas GTS software, the paper also established a three-dimensional finite element model of the tunnel to make a live digital simulation for the state of tunnel deformation and surrounding rocks, so as to figure out the law of soil disturbance by comparing the simulation results with the actual monitoring data, and also to predict and estimate the stability of the surrounding tunnel rocks and the safety of the primary support structure through precisely analyzing causes of the variety of settlement and deformation. Meanwhile, the paper can provide reference for design and operation of analogous constructions.