The article presents the spatial issue of the subsidence basin above tunnels drilled with a mechanized shield of the EBP TBM type. This issue is most often modeled in selected 2D cross-sections and spatially interpolated for the entire tunnel section along and across. The authors attempt a broader spatial analysis of monitoring data for a selected test section of a railway tunnel bored with a large-diameter disc in Quaternary soil with a relatively small overburden of soil of approximately 1 D. The analysis presents transverse subsidence basins in selected monitoring sections and a longitudinal basin above the tunnel axis. The results were analyzed as the percentage of settlements depending on the place of their origin - the front of the TBM, the shield length and the tail zone. Detailed values ​​of subsidence and their percentage share in the total subsidence, as well as the time after which individual displacements occurred, are provided. Representative results were obtained for consolidated Quaternary soils, both cohesive and non-cohesive.