Based on an engineering case of the construction of prefabricated piles for Chizhou Power Plant

the distribution and dissipation laws of excess static pore water pressures induced by pile driving (prefabricated square piles) in the saturated soft clay with driven plastic drainage plates are introduced. The factors influencing the distribution and dissipation of the excess static pore water pressures in soils are analyzed. The test results show that the spacing of prefabricated piles in the saturated soft clay during their construction should be larger than 3 m; and the time interval should be 6-8 h. The control parameter for the construction of prefabricated piles is that the ratio of excess static pore water pressure to effective weight of superimposed soil should not be larger than 1.