PRIMARY STUDY ON SEEPAGE DEFORMATION IN DEEP FOUNDATION PIT AND THE COUNTERMEASURES

In deep foundation pit, piping and flowing soil are two kinds of seepage deformation, causing many accidents directly. In this paper, the mechanism of seepage deformation is primarily summed up and discussed. Good dewatering is suggested as the main countermeasure to avoid seepage deformation in deep foundation pit, meanwhile, dewatering also proves to be very important to ensure the smooth excavation of deep foundation pit through case history.