Rigid and brittle rocks trend to rockburst，which is generalized by uniaxial compressive strength ? c

ratio of compressive strength and tensile strength ? c /? t and exponential of strike energy WB. Before physical model is made

some similar materials

such as quartz sand

gypsum

cement

water

glycerin and glutin

are blended by different proportions of ingredients according to the principle of orthogonal test design. In course of the proportioning

the small model samples are produced and uniaxial compressive test and split test are done with them. From the results of the tests

it is found that the different proportions of similar materials influence ? c

? c /? t and WB differently. Based on physical simulation

? c

? c /? t and WB are checked in general and the directions for the material generalization are confirmed. The mechanical parameters of materials by the directions

which are steady

not only meet with requests for rockburst

but are convenient for making big model. Therefore

great physical simulation for rockburst is feasible.