In geotechnical engineering

agricultural engineering and hydraulic and hydro-Power Engineering etc.

many problems such as long-term stability of dam and slope

could be regarded as the plane strain issue. Hence

these questions are always figured out though as the plane creep tests

which are more suitable to the engineering conditions. In order to deeply investigate the plane creep properties of loess soil

a series of laboratory consolidated plane creep tests of loess are conducted by a reformed plane creepmeter in this paper

and the tests results show that the deformation of plane creep is dramatic under high water content

high deviatoric stress and low consolidation condition. Base on the analysis of experimental data

a new empirical model is proposed. In addition

it is found that the two existed models named SinghMitchell and Mesri models

which are usually utilized to model the creep problems of soils

are not suitable for loess in the plane strain condition. However

the model proposed in this paper can better describe the creep proprieties of loess in the plane strain condition

due to its merits in both higher accuracy and fewer parameters.