Traditional monitoring techniques are faced with the problems of low acquisition frequency and easy to be affected by the construction environment during the shield tunneling, which cannot meet the actual needs of timeliness monitoring of surrounding environmental impact on shield tunnel construction. Based on this actual demand, a wireless sensor network (WSN) system was used to monitor the response of shield tunnel segments and surrounding buildings during the shield tunneling in this study. According to the result of the signal transmission test, an optimization scheme of microelectromechanical system (MEMS) sensor layout is designed to improve the monitoring efficiency of the WSN system. Through the comparative analysis of WSN system monitoring data and traditional monitoring data, it is found that, with the increasing distance between the monitoring section and the tunnel face, the convergence value of tunnel lining clearance gradually tends to be stable, and the wireless monitoring results of transverse clearance convergence of the tunnel in this section are consistent with the overall deformation trend of the convergence gauge monitoring results. This study also simulated the shield tunneling adjacent buildings using a nonlinear finite element method. A parameter sensitivity analysis of the support pressure of the excavation face and the grouting pressure at the tail of the shield is carried out. The results show that the surface settlement can be reduced by properly increasing the grouting pressure and the support pressure of the excavation face. Moreover, increasing the support pressure of the excavation face has a better inhibition effect on the settlement of the surface soil than increasing the grouting pressure.

中文翻译：

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盾构掘进的影响研究：WSN监测和数值模拟

传统的监测技术面临盾构施工过程中采集频率低，易受施工环境影响的问题，不能满足及时监测周围环境对盾构施工影响的实际需要。基于此实际需求，本研究使用无线传感器网络（WSN）系统监视盾构隧道施工期间盾构隧道段和周围建筑物的响应。根据信号传输测试的结果，设计了一种微机电系统（MEMS）传感器布局的优化方案，以提高WSN系统的监测效率。通过对WSN系统监视数据和传统监视数据的比较分析，发现，随着监测断面与隧道工作面距离的增大，衬砌间隙净值的收敛值逐渐趋于稳定，该区段横向净距收敛的无线监测结果与隧道整体变形趋势相吻合。收敛规监测结果。这项研究还使用非线性有限元方法模拟了盾构施工邻近建筑物的情况。对开挖面的支撑压力和盾构尾部的灌浆压力进行了参数敏感性分析。结果表明，适当增加开挖面的注浆压力和支护压力可以减少地表沉降。而且，