NUMERICAL SIMULATION OF THE TECTONIC STRESS FIELD AND FORECASTING OF FRACTURES BASED ON MSC MARC

MSC MARC is a nonlinear FEA program.Its ability of highly nonlinear finite element analysis and good secondary development interface enable us to construct a complicated 3D geological numerical model and perform 3D tectonic stress modeling and nonlinear analysis,and complex constitutive equations and fracture critera of rocks can be established by secondary open subroutines.Based on the finite element analysis software MSC MARC.a 3D finite elemant model of the Baobei anticline the Yanqi basin,Xinjiang,is established, and the simulation analysis of the tectonic stress field and fracture forecasting are performed.The predicted regions with high-density fractures are in agreement to the real case.