Suggested method for deformability test of layered rock masses

Traditional plate bearing test of rock mass deformability is based on homogeneous semi-infinite rock mass and Boussinesq formula under centralized force. It can only obtain a synthetic (or equivalent) elastic(or deformability)modulus. The modulus of soft and thin seam(or fault) in rockmasses can not be measured individually. Hence, suggested layered rockmass plate bearing test is not only necessary but also important. According to this test, the rlastic modulus of every layer of rockmasses can be determined using elastic moduli calculation of divided layers .The principle and process, calculation method and application example are presented.