Abstract: The relationship between the results of horizontal stresses measured from The Flat Dilatometer Test (DMT) and The Total Pressure Cell Test (TPCT) in the saturated clay was developed based on the Mindlin's elastic solution. It is concluded that the initial total stress σ  _h0is greater than the contact pressure p₀ on the DMT membrane before the inflation. This result was verified by the test results using DMT and TPCT in a railway project in Huzhou area.

Key words: The Flat Dilatometer Test (DMT), Total Pressure Cell Test (TPCT), Mindlin's elastic solution