Because foundation pit dewatering causes the readjustment of stresses in soil
it brings uneven settlements and architectural damage of the building around foundation pit; accordingly
real time prediction of land subsidence caused by foundation pit dewatering has the realistic meaning; by using the theory of unsteady well flow and basic theory of soil mechanics
the real time prediction method of land subsidence has been introduced; the rationalities of different parameters in formula have been analyzed via case study; and it has certain meaning to forecast the land subsidence around foundation pit caused by foundation pit dewatering.