Based on the analysis of loading path of flat dilatometer test in Jingjiang area situ, with standard stress path triaxial system produced by GDS of UK used, laboratory simulation on stress path of flat dilatometer test (DMT) were carried out. Many geologic parameters are acquired, such as lateral pressure coefficient, horizontal coefficient of subgrade reaction and vertical drainedconfined tangent modulus, by analyzing the laboratory experiment result. The comparative analysis between DTM and laboratory experiment showed that differentiation on result, especially on lateral pressure coefficient and horizontal coefficient of subgrade reaction, but a little differentiation on vertical drainedconfined tangent modulus.
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