By burying pore water pressure gauges at the side of the piles,the variation discipline of the pore water pressure in saturated powder soil around piles is studied,and the mechanism of deformation displacement of soil body around piles caused by constructions during the process of construction of the pressure pumped CFG pile by continuous auger drilling is discussed.

Along with the high speed developing of country economic, high speed and heavy load come to be the basic characteristic of road and railage, while traffic load will put on the buildings pile-soil system nest to the road.