Abstract
Abstract The construction of digital city provides powerful data support for the large-scale underground engineering construction. Analysis on the effect of underground excavation on surface building damage based on GIS data management can quickly evaluate the effect of underground excavation on surface building damage, and provide technical support for the disaster prevention and mitigation of underground engineering during excavation. The data management of GIS platform was first reviewed and called through professional model, which predicted the deformation of wallrock and subsidence of overlying rock mass caused from tunnel excavation. The range disturbed by excavation and numerical analysis model of underground engineering and surface buildings were determined and also the stress-strain relationship of surface buildings caused by deformation were obtained. The feedback of the analysis results to the data management of GIS platform was received. Through comparison with corresponding standard damage evaluation rules, it can provide technical support for decision makers. By analysis and verification of an example about the effect on buildings caused by the excavation of an undersea tunnel terminal, it can ensure the safety of surface buildings influenced by the excavation.
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