Abstract:

The deep foundation pit in Wuhan, the surrounding environment condition of which is complex,who’s stability control requirement is very strict. Through the analysis of the conditions of its engineering geology and hydrogeology conditions, the comprehensive economic and technical comparison, finally determine the basement of deep foundation pit of the partial section cantilever piling , part of vertical injection flower tube and shotcreting composite support, the calculation of foundation pit support after the safety factor of each section are greater than 1.15, can guarantee the stability of foundation pit.

Key words: deep foundation pit, stability, control countermeasures