基于室内盾构模拟试验，研究管隧垂直、斜交和平行工况下盾构开挖对管线变形的影响。以合肥在建地铁为工程背景，主要对管线的沉降、变形和相对转角等规律进行模拟试验研究。研究结果表明，二次扰动更容易使土体产生沉降，对土体中的地下管线的位移影响更大；隧道在开挖过程中沿隧道轴向的管线变形与沿隧道环向的影响范围不同，隧道开挖对地下管线产生的环向变形影响大于轴向变形影响；隧道开挖使管线下方土压力发生变化，中间段管线下方产生荷载临空区域，土压力逐渐减小，两边缘端产生附加应力逐渐增大。研究成果可为盾构施工对地下管线变形影响的预测提供相应的控制破坏依据。

By performing laboratorial shield tunneling simulation tests, the effect of shield tunneling on the deformation of underground pipelines is studied under the condition of three kinds of relative positions between tunnel and pipelines, namely vertical, heterotropic, and parallel. With ongoing construction of subway in Hefei region as engineering background, the laws of settlement, deformation, and relative angle of the underground pipelines are mainly researched. Results show that the second disturbance is more likely to induce settlement in soil, which exerts a greater influence on the displacement of underground pipelines. The range where the pipeline deforms along the tunnel axial direction is found to be different from that along the tunnel radial direction during shield tunneling, showing a greater induced deformation of underground pipeline along the radial direction than that along the tunnel axial direction. After the tunnel excavation, the earth pressure under the pipelines change, and an area of load free appears below the middle section of the pipeline, which gradually reduces the earth pressure while increases the additional stress under the two marginal sections of the pipeline. The conclusions can provide a reference of damage controlling for the prediction of the effect of shield tunneling on the underground pipelines.