某隧道施工过程的近似数值模拟

APPROXIMATE NUMERICAL SIMULATION IN THE PROCESS OF A CERTAIN TUNNEL CONSTRUCTION

为研究某暗挖施工隧道在开挖完成后的沉降数据,使用有限差分程序FLAC3D软件对某地铁隧道施工过程进行了模拟,并与某近似断面进行对比分析,数值模拟数据显示隧道跨度接近时,其特征点沉降数据差异不明显,可在一定范围内对此隧道采取其近似断面的数值模拟结果,以简化建模工程量,为设计和施工提供一定的借鉴依据。

This paper applies FLAC3D–the finite difference procedure software to simulate the construction process for a certain subway tunnel,for the purpose of researching the settlement data upon excavation of a certain undercut tunnel,and conducts comparative analysis with a certain approximate section.When the numerical simulation data is close to the tunnel span,difference between settlement data of feature points is small and within a certain range,numerical simulation result from the approximate section can be taken,to simplify the modeling workload and provide a certain reference for design and construction.