基于流固耦合模型的隧道施工数值分析

Numerical Simulations of Tunnel Construction Using the Fluid-solid Coupling Model

地铁隧道施工将不可避免地扰动岩土体,破坏原有地下水渗流场与应力场的平衡状态,从而引起地表沉降和变形,影响地面建筑物的安全和地下管线的正常使用,这些问题都涉及地下水的问题.从地下水与岩土体耦合共同作用角度来分析和研究隧道施工引起的地面沉降问题,运用FLAC3D有限差分程序进行数值模拟,并把数值模拟的结果与工程实测曲线进行比较.

When tunneling, the disturbance induced by construction necessarily inevitably destroys the intrinsic stress and seepage balance of geotechnical material followed by, causing ground surface movement and deformation which affects safety of the ground construction and the normal operation of underground pipeline directly. This paper analyses and studies surface settlement from the angle perspective of fluid-solid coupling theory, addresses applies numerical simulation with FLAC3D, and compares the result of numerical simulation with the measured curves.