Abstract: Orebody delineation is the basis for reserve calculation and mining design and also an important basis for an accurate description of orebody spatial distribution pattern, law of valuable mineral change and ore reserve distribution.In view of the defects in conventional orebody delineation methods such as strong subjectivity and low efficiency, the automatic delineation of ore-rock boundary based on the artificial neural network technique was proposed.Its practical application has verified that the method can greatly improve the efficiency of orebody delineation and well solve the problems existing in other available methods, with the accuracy remarkably better than that of conventional methods.

Key words: Orebody, Nerual network, Automatic delineation, Boundary