Different proportions of aggregate and adhesive materials of low strength similar material were developed by similar proportioning test

and the influences of sand-binder ratio and cement content of cemented material on similar material properties were analyzed. Then three feasible and effective proportions of similar materials were determined and a multilayer shale deposits model was established based on condition of deposit and experimental. The results show that the density

uniaxial compressive strength (UCS)

elastic modulus

and Poisson's ratio increase with the cement content of cemented material increasing. And the density

porosity

elastic modulus

and Poisson's ratio are less volatility in low sand-binder ratio. Further studies prove that the error between actual similar constant and design similar constant of low strength similar material is less than 1.77%. Meanwhile

combining with the results of numerical simulation

the pillar strain variation between numerical simulation and similar simulation test is less than 8.76%

and the deformation characteristics agree well with each other. It indicats that test model is reasonable and effective in studying multilayer shale deposits model experiment. The study results provide an effective scientific basis and experimental basis of multilayer shale deposit underground mining research.