Research On Forward And Inversion Forecasting Of Concealed Orebody Under The Guidance Of Deposit Model

Ore-bearing hydrothermal solution of hydrothermal type deposit is the precondition of deposit formation,structure is the passage of ore-bearing hydrothermal solution and provide the favorable space to the mineralization,strata not only effect the precipitation of mineral but also the mineralization modes,orebody scale and mineral components is the most important condition of the hydrothermal type deposit.Gejiu tin deposit is a super large tin polymetallic ore concentrating area,contain abundant tin,copper,plumbum,tungsten and other non-ferrous metal and rare metal mineral.As a development ore field of Gejiu,Kafang ore-field contains rich mineral resources and less project layout which are mainly distributed in the northwest of the study area,still have great mining value.So,it has great value and significance to use the new techniques to evaluate the mineral resources potential.Combined with the geological background,the prospecting model of Kafang ore-field is the type of"gong",the deu-teric high-temperature hydrothermal copper-tin polymetallic deposit were formed with the characteristic of controlled by time and space,strata,structure and magmatic rock.The process simulation of ore-generating geological anomaly use a new forward modeling method by discussing the evolution of various factors which affect the development of geological processes in space and time,using numerical simulation method simulated thermal-hydraulic-mechanical coupling process,we understood the geological evolution process and metallogenic mechanism,and finally find out the favourable geological conditions and metallogenic positions.Based on the materialized experimental results,it is visualization and scientific and without constrained by the time and space and follow the natural law and objective law.The quantitative prediction of mineral geological anomaly use a inversion method,this research,based on understand the geological background,we collected the information of geology,geography,remote sensing and geochemical exploration,then established digital ore-field by using the new modeling techniques of computer.by using the theory of Cube prediction model and geo-statistics methods,extraction the mineralization information and elect the mineralization vision area.Finally,combine the forward and inverse forecast result and discussion the most favorable metallogenic area of xinshan exploration area,we achieved the prediction of interlayer deposit and deep deposit and final block out the target region of mineralization and calculated the resource quantity,and has realized a great breakthrough in location,quantity and probability.A comparative analysis of forward and inversion forecasting of concealed orebody,we study of the favourable metallogenic positions,it have a guidance meaning for search for deep orebody and has broad development prospect.