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地铁隧道施工引起地表的沉降变化直接影响到城市环境、引起建筑物损伤，开展地表沉降预估方法研究可有效地为设计地表沉降值和城市地下空间规划提供理论依据。本文建立有限元计算模型，得出本地等效围岩参数，进而得出不同地质条件下地表沉降变化特性。结果表明：地表沉降预估值与实测结果吻合较好，且修正参数较小、有效地保证了准确度。
Subway tunnel construction caused by changes in surface subsidence directly affect the urban environment, causing damage to buildings, to carry out research on surface subsidence prediction method can effectively provide the theoretical basis for the design of surface subsidence values and urban underground space planning. In this paper, the finite element calculation model is established, and the local equivalent parameters of surrounding rock are obtained, and the variation characteristics of surface subsidence under different geological conditions are obtained. The results show that the estimated values of surface subsidence are in good agreement with the measured results and the correction parameters are small, which can effectively ensure the accuracy.