In this paper,the transverse ground surface settlement of DIK42 +660 cross-section of land section of Shiziyang tunnel induced by shield boring is calculated by means of Peck formula. The ground is numerically simulated by means of ANSYS finite element model,and the transverse ground surface settlement values are obtained from the numerical simulation results. The transverse ground surface settlement values obtained by means of theoretical analysis and numerical simulation respectively are estimated by means of comparing them with the measured values. The paper can provide reference for the prediction of ground surface settlement of shield-bored tunnel of similar projects in the future.%为了预测盾构隧道施工引起的地表横向沉降，针对狮子洋隧道陆地段DIK42＋660断面地层，通过理论分析，利用Peck公式对该断面地表横向沉降量进行计算；通过数值模拟，利用ANSYS建立地层的有限元模型，并从数值模拟结果中获取地表单元的横向沉降量；最后通过与现场监测结果对比，对理论分析和数值模拟的地表横向沉降量预测方法进行评价。研究结果可为盾构隧道地表沉降的预测提供有效的方法。
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