目前用于分析研究盾构隧道开挖诱发地层变位的室内模型试验往往无法模拟地层损失、隧道埋深、隧道动态推进等因素的影响效应。为此,采用自行研制的室内模型试验装置进行砂土中盾构隧道一次开挖完成及不同地层损失率条件下盾构隧道动态开挖的室内模型试验,获得的天然砂土地面沉降分布曲线特征与已有研究成果基本相符,表明该装置可模拟不同地层损失及盾构隧道动态施工。 At present, the indoor model tests that are used to analyze and study the displacement induced by shield tunneling often can not simulate the influence effects of formation loss, tunnel depth and tunnel dynamic propulsion. Therefore, the indoor model test device of self-developed indoor model test device is used to carry out the excavation of shield tunnel in sand and the dynamic model of tunnel excavation under different formation loss rates. The characteristics of natural sand ground subsidence distribution curve It basically accords with the existing research results, which shows that the device can simulate the different formation loss and the dynamic construction of shield tunnel.