Study on Triaxial Compression Creep Test and Numerical Simulation of Jurassic Sandstone in Northern Shaanxi

摘要

Based on the creep characteristics of the overlying Jurassic sandstone in the goaf in Yulin area of Northern Shaanxiby the RLW-2000 microcomputer controlled rock triaxial compression creep testing machine, the parameter values of Burgers creep model of the Jurassic sandstone are determined, and the creep characteristics of Jurassic sandstone are described. The parameter values of Burgers creep model of the Jurassic sandstone about FLAC3D simulation are determined by using the method of FLAC3D simulation and laboratory test, the simulated results provide the basis for long term stability evaluation by using computer simulation.