Residual Liquefaction of Silt Seabed Induced by Wave at the Chengdao Sea Area

One simplified silt seabed liquefaction calculation method induced by wave based on Biot one dimensional consolidation theory was put forward.Taking the Chengdao seabed at the Yellow River estuary as an example,the pore pressure growth of silt were measured in the dynamic triaxial tests,and the growing parameters a=0.613,b=0.185 were gotten.The calculation shows that the seabed liquefaction depth is maximum at the water depth 7-8 m,and under the wave loads with a recurrence period of 50 years,the liquefaction depth reaches 5.2 m,which corresponds with the geological disaster disturbed depth and the water depth of concentrated distributed geological disasters.