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利用粘弹性有限元位移反分析方法对洞室围岩粘弹性变形参数及地应力条件进行了分析，并与岩体现场变形试验及地应力测量结果进行了比较。在位移反分析计算模型中，根据洞室围岩位移观测的实际情况，分别考虑了仪器埋设断面测点的设置时间和开挖工作面推进过程中的影响。通过围岩变形观测资料，对位移反分析所涉及的某些问题进行了讨论。
The viscoelastic deformation parameters and the geostress conditions of surrounding rock were analyzed by viscoelastic finite element displacement back analysis. The results were compared with the field deformation test and the in-situ stress measurement results. In the displacement back analysis model, according to the actual situation of the displacement observation of surrounding rock in the tunnel, the setting time of the measuring point of the embedded section of the instrument and the influence during the advancing of the excavation face are respectively considered. Based on the observation data of surrounding rock deformation, some problems involved in displacement back analysis are discussed.