Abstract:In order to strictly control the ground subsidence and minimize the influence of construction on the non-replicating architectural heritage, this paper combined with the actual project of Zhengzhou Metro Line 3 running through the Zhengzhou Memorial Tower, a national key cultural relic protection unit, at a short distance, analyzed the shield construction technology and the effect of reinforcement measures by means of numerical simulation and field measurement. Analysis of reinforcement effect around the tower before shield construction, optimization analysis of construction technical parameters, comparison analysis of field measured value and numerical calculation value were carried out to verify the rationality of construction technical parameters selection, reinforcement effect of pile row, consistency of numerical calculation and monitoring data. Finally, it has effectively controlled the surface settlement and the shield successfully passed the memorial tower, ensuring its safety and integrity. It could provide reference for similar construction projects.