STUDY OF ROADWAY DEFORMATION INDUCED BY EXCAVATION WITH SOFT ELASTIC MATERIAL SIMULATED EXPERIMENT

Laboratory simulation experiment is an important method for studying roadway deformation condition and mechanism. Based on the theory of solidification pressure, we built a vertical experimental model used by low strength material. This model, which initial strain energy equaled zero, simulated the solidification pressure. And this model made up for the deficiency of displacement field of horizontal solidification method. According to similarity theory, the material is desirable. In solidification process, this experimental model simulated physical and mechanical property in different depth. The simulated object was ore-body in 14-exploration line used two-sublevel mining under self-weight stress. Experiment results matched numerical simulation. Roadway deformation mechanism has been analyzed based on experiment results and numerical simulation.