Research On Automatic Updating Method Of 3D Ore Body Model Based On Implicit Function And Geostatistics

Since China vigorously promoted technological innovation in the field of mining,domestic mines have successively invested in the construction of digital mines,forming a certain digital scale,and gradually increasing the timeliness of the expression of mining,exploration,and survey results.This puts forward new requirements for the traditional 3D modeling of mine geology,that is,from static to dynamic,from manual interaction to automatic intelligence,and from low efficiency to high efficiency.This article takes the data of mine exploration drilling data,exploration profile,existing explicit ore body model,and mining boundary information in the production process of the mine as the original data,and aims at the automatic and efficient update of the ore body solid model and grade model in the mine geological work Conduct research,the specific research content and work carried out are as follows:1)Automatic update method for ore body model.Aiming at the problem that the ore body entity model is difficult to update automatically and the amount of artificial interaction is large,the Hermite radial basis implicit function surface is introduced,and an ore body entity under the control of the boundary conditions of the ore body such as mining boundary,borehole test and grade threshold is proposed.The model automatically rebuilds and updates methods.The method does not require manual interaction,and automatically reconstructs the ore contour model by point and normal vector,which conforms to the spatial position of the original boundary data and the local occurrence of the ore body.2)Local update method of ore body grade model.Aiming at the problem that the local update of ore body grade model needs global reconstruction or manual designation of update range,this paper introduces multi-point geostatistical stochastic modeling method and anisotropic ellipsoid,and automatically searches for local update range based on incremental data.Partial automatic and rapid update of the ore body grade model.3)Design and develop an automatic model of ore body model based on implicit function and geostatistics,which realizes the reading of ore body exploration data,automatic/semiautomatic delineation of ore body,renewal of ore body model,renewal of ore body grade model,3D visualization operations,results output and more.Based on the above methods and processes,a model update experiment was carried out for the actual geological exploration and measurement data of mines at home and abroad,realizing the resampling and overall implicit reconstruction of the ore body solid model and the automatic definition of the local variation range of the ore body grade model.Partial update.The model verification,borehole verification and probability distribution consistency analysis of the experimental results show that the automatic updating method of ore body model based on implicit function and geostatistics proposed in this paper can automatically update the ore body model and local update of the grade model.It can provide important reference for the 3D geological modeling of digital mines.