Numerical Simulation Of Metallogenic Dynamics Based On Flac3d And ANSYS

According to the basic theory of metallogenic dynamics, Henan MoLuanchuanpolymetallic ore district as an example, summarizes the metallogenicdynamicmathematical model and the model of geological body, established numericalsimulation of ore magma heat of liquid flow, realize the dynamic numericalsimulation of mineralization hydrothermal type deposit, prediction research and a newway for the ore-forming. The main research contents and results are as follows:1. Summed up the metallogenic dynamics simulation model.(1) Through hydrothermal metallogenic mechanism and metallogenic geologicalprocess, the hydrothermal deposit metallogenic geological model and mathematicalmodel;(2) Order tectonic stress coupling numerical simulation theory basis of numericalsimulation and force-heat flow;(3) Analysis of the coupling relation of stress field, thermal field, fluid flow fieldnumerical simulation of three subsystems of metallogenic dynamics, and thecorresponding mathematical formula of the relation between stress and strain stressfield simulation in structural.2.Formed the technical method for the numerical simulation of themineralization process.On the basis of understanding the basic principles of metallogenic dynamics,thehydrothermal deposit metallogenic dynamic mathematical model was transformedinto a computer simulation model, clarify the process of geometric model, materialparameters, boundary conditions and initial conditions and parameters selection ofmeaning of numerical simulation, the key technical links the finite elementsoftwareANSYS and finite difference software FLAC3D simulation, summarizes thenumerical simulation process of ANSYS and FLAC3D software, the formation of thenumerical simulation technology of metallogenic dynamics.3.To achieve the numerical simulation Luanchan Mo polymetallic ore districtmineralization process and results analysis.(1) The geological entity model is established in Luanchuan oreconcentrationarea of800sq km, summed up the ore district regional ore-forminggeologicalbackground, metallogenic process and summarizes metallogenicenvironmentand conditions of ore. Numerical simulation of metallogenic dynamics bymeans of ANSYS and FLAC3D on the ore district, the structural stress distribution field value distribution and strain rate, porosity, the metallogenic conditionsofextracting ore district, to predict the distribution of concealed mineral.(2)Summarizes the genetic model of hydrothermal type deposit, select theN00line and N32line of deep profile rock, rock, fractured geological entitymodel.Numerical simulation of metallogenic dynamics by ANSYS and FLAC3D,analysis of tectonic origin stress isoline distribution and the flow direction of thefluid,porosity, strain rate distribution and hydrothermal type deposit,metallogenicconditions according to the genesis of the deposit and the known oreextractionof deep profile, and carries on the forecast to the deep concealed mineral.(3) Metallogenic information collection Nannihu deposit,3D geological solidmodel, establish the Nannihu deposit by GOCAD software by programming, toachieve the FLAC3D import SGrid entities in GOCAD model. Through the FLAC3Dsoftware the numerical dynamics of Nannihu deposit rock coolingprocess simulation.The ore-forming process in the direction of fluid flow,porosity, strain rate distribution,the analysis results are displayed in theextensional stress field in the rock contact zoneNannihu group rocks near thebody strain, the formation of the expansion of space,space provided conditions for mineralization. The fluid flow and expansion spacebinding site formedconfluent area, confluence zone is the favorable ore-forming parts,also showedgreat ore prospecting potential in the deep.