In recent years, the construction of digital city provides great data support for people developing and
using the broad resource in underground space. But realizing the counting which is based on mechnial
principals using GIS technology has sizeable difficulty. Some questions like the fusion of professional
model and multi-source datas in GIS platform and model fusion must be resolved well. Therefore, the
research-tunnel excavation foundation and key is the design and establish of database. The database
includes property database, graph database, damage assessment database, professional model database,
metadatabase and other numerical software data interface part. Database is consisted by variety of
information sources, multiple data types and multi-purpose datas. The data process is shown in figure 1.