Abstract: For the existing geological survey data of a leadzinc mine,this paper carried out threedimensional geological modeling and resource reserve estimation for a leadzinc mine.Based on the theory of geostatistics,a ground model,a drilling database,an ore body model,and a block model of a leadzinc mine are established.The combined analysis and statistics of the samples in the ore body are used to estimate the block grade by the power distance inverse ratio method.Finally,according to the domestic classification method of geological mineral resources,and according to the classification of different grades,industrial grades,etc.,the resource reserve verification report is obtained,which provides a reliable guarantee for the followup production of leadzinc mine.The application of surpac software provides convenience for mines in safe scheduling and mine information management.At the same time,it provides a more intuitive and effective method for calculating the depletion rate and loss rate in dynamic production.The research shows that:By constructing the mine geological database,the threedimensional model can provide technical support for mining engineering,geological engineering,reserve estimation,ore grade dynamic management.

Key words: Ground surface model,Surpac software,Geological database,Mine reserve calculation