Numerical Simulation And Metallogenic Prognosis Of Metallogenic Dynamics Based On FLAC3D

Based on the fluid-solid coupling module of FLAC3 D and the numerical simulation method,the tectonic stress field and fluid field are coupled to simulate the tectonic evolution and fluid flow in the ore-forming process of Dongpo Orefield.According to the obtained principal stress,the maximum principal stress is obtained.Quantitative results of maximum shear stress,normal stress,principal strain rate,maximum principal strain rate,maximum shear strain rate,volume strain rate,etc.According to this conclusion,the FLAC3 D metallogenic dynamics numerical simulation was carried out in Jinshiling area,and the metallogenic regularity of Jinshiling area was summarized.The main research results are as follows:(1)Summing up the numerical simulation model of metallogenic dynamics,establishing the metallogenic dynamics model of hydrothermal deposits,analyzing the coupling relations among structure,stress field and seepage field in metallogenic system,arranging the characteristics of FLAC3 D and ANSYS software,writing programs.The numerical simulation process of metallogenic dynamics is realized by software.(2)The geological entity model of Dongpo Orefield is established,and the geological background data,regional metallogenic process,metallogenic environment and conditions are analyzed.The dynamic simulation of ore-forming process in Dongpo Orefield is realized by using ANSYS and FLAC3 D,and the principal stress,shear stress and differential stress are obtained.The distribution of principal strain rate,shear strain rate and volume strain rate,combined with the distribution of known ore deposits,the control of structure,stress field and fluid field on the location of orebody is analyzed,and the favorable metallogenic conditions of Dongpo ore field are extracted.(3)Realizing the numerical simulation of metallogenic dynamics in Jinshiling area,analyzing the favorable metallogenic conditions of Jinshiling,and obtaining that the area with stress and strain rate is the favorable part of mineralization.We predict the location of the hidden ore in Jinshiling and mark the most potential areas.