Abstract：The new achievements of the geomechanical model experiment techniques are introduced in the paper，including the functions and characteristics of the triaxial loading facility for the geomechanical model of underground structures of PYD-50 type which was awarded the first Prize of the National Science and Technology Progress，the apparatus for tensile strength or compression test on specimen with unequal load in triaxial directions which was awarded the third Prize of the National Science and Technology Progress and the multipurpose apparatus for geotechnical engineering model experiments of YD-A type. The development situations of several experiment techniques which are necessary and complementary for the above equipment in application are also introduced in brief，including simulation techniques for the material of rock mass，the technological process of shotcrete and bolting support construction，the technology for measuring the deformation in rock mass，the plane deformation control technology in the experiment model，the synchronizing technology for the flexible loading and the deformation in transverse direction on the model boundary surface，etc. and their applications in engineering.
