Taking the oversized diameter mud-water balance shield tunneling underpassing through Joyful Song Commercial Complex of Beijing East Sixth Ring Road Renovation project as the background,a numerical model of the tunnel underpassing process was established to explore the settlement patterns of building foundations under different face slurry pressures,grouting pressures,and deep hole grouting ground reinforcement measures.The deep hole grouting measure has a significant effect on controlling the settlement of large-volume buildings.Compared to deep hole grouting,face slurry pressure and grouting pressure have less impact on settlement control.It is recommended to use deep hole grouting reinforcement for weak strata underpasses existing buildings,supplemented by tunneling parameters that adapt to stratum depth and physical properties.
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