The soft soil contain high water content

high compressibility

high creep

low permeability and low strength. Recently

some researches have dealt with soft foundation using vacuum preloading-electroosmosis method which can only discharge partial weakly bound water in soft soil

but the amount of postconstruction settlement is still too much to meet the requirements of engineering. To solve this problem

a small amount of salt solution was added on the basis of vacuum preloading-electroosmosis method

known as vacuum preloading-electrokinetics method

and achieved a better experiment result. The soft soil in the pearl river delta region was studied. The comparative test was used between vacuum preloading-electroosmosis method and vacuum preloadingelectrokinetics method（adding Cacl

2

solution） in soft ground treatment

and it came to a conclusion that vacuum preloadingelectrokinetics method is at an advantage when dealing with soft soil

which provided a scientific basis for applications of vacuum preloadingelectrokinetics method.