地表注浆对隧道邻近建筑物变形控制规律分析

为了分析地表注浆对隧道邻近建筑物变形控制规律，采用有限元数值模拟方法，从不同层高、与隧道中心线成不同角度、离隧道不同距离等3方面探讨地表注浆加固对建筑物的变形控制规律。研究结果表明：注浆加固对距离隧道中线1～1．5倍开挖跨度范围内地表的沉降控制起到了显著的作用。建筑物与隧道间距离是影响地表注浆加固控制建筑物变形效果的主要因素。建筑物层高越高，距离隧道越远，注浆对周围建筑物作用效果越不明显；随着建筑物与隧道所成角度的增大，作用效果反而越明显。

Analysis of deformation controlling law for buildings nearby tunnels with grouting from the ground surface

To analyze deformation controlling law of buildings nearby tunnels with grouting from the ground sur- face, the finite element numerical simulation method was used to discuss it in terms of different height, different angles and distance between tunnel central line and buildings. The results show that grouting reinforcement plays a significant role in controlling the subsidence of surface, when buildings are 1 - 1.5 times excavation span dis- tance away from tunnel central line. The distance between buildings and tunnels is the main factor in controlling building deformatia effect. The higher the buildings and the further distance between buildings and tunnels, the less effect of grouting on surrounding buildings. In addition with the increase of the angle between buildings and tunnels, the effect of grouting reinforcement is in turn more obvious.