盾构隧道壁后注浆压力对土体变形影响分析

The deformation effect analysis for shielding tunnel grouting pressure on the ground

采用FLAC3D软件对隧道施工过程及注浆压力进行数值模拟计算,分析注浆压力对土体变形的影响,通过分析得出:采用不同注浆压力进行充填壁后空隙时,盾构隧道壁后土体变形差异较大;当壁后注浆压力控制在0.2 MPa时,盾构隧道壁后土体变形量较小,地表沉降可以得到一定控制。

Using FLAC 3D software construction process of the tunnel grouting pressure and numerical simulation analysis,analysis of grouting pressure effects on soil deformation and concluded as follows： in the case of different grouting pressure,soil disturbed to different extents,when grouting pressure controlled at 0. 2 MPa,the tunnel deformation of the less soil can be some control over.