Abstract: With the rapid development of urban construction, urban planning adjustments have become more frequent, and the construction of the rail transit has become a common need for large cities. Deep excavations have a particularly complicated impact on the stability of adjacent structures and utilities. To analyze the impact of adjacent facilities due to the deep excavations has a significant importance in the safe project developments. This paper presents a case history of the deep excavation for the Honggutan Central Financial Street foundation construction. This excavation project was adjacent to the transfer station for Nanchang Metro No. 1 and No. 2 lines. The finite element method was used to quantify the hazards induced in the construction. The hazards that corresponding to each factor are evaluated separately.

Key words: deep excavations, adjacent constructions, subway, risk assessment, numerical simulation