The project is to study environmental effect of utilization of metro underground space both theoretically and practically which is based on Nanjing Subway. We intend to analyze and calculate it with finite element method or study interaction between strata and structure using computer simulation technology directly and make quantitative prediction with different construction method. Then we will compare and analyze all observation datum and form systematical and informational construction observation technology.

   We also test the typical polluted soil, sum up and present estimation criteria. At last wewill incorporate all theoretical, observational and practical experience and make scientific systematical software to predict environmental effect of underground engineering.