3D Geological Modeling And Quantitative Prediction Of Julong'an Deposit In Xiangshan Uranium Ore Field

The Julong'an deposit has been over 60 years since its discovery and has experienced many times of research which is given priority with two-dimensional geological survey.With the situation of the increasing shortage of uranium ore in China,it is more and more important for the follow-up development of the gulongan deposit.This article is based on the three-dimensional platform.On one hand,we were on the basis of the three-dimensional modeling theory and the geostatistical statistical analysis related theory.On the other hand,we combined the Geological geological background with the mineralization rule to do the three-dimensional prediction of the deposit with the help of the concealed orebodies quantitative forecasting system software which is developed by Chen Jianping's team.We have realized the quantitative prediction of the three-dimensional deposit and pointed out the direction for further exploration.This study has analyzed the mineral resources of the deposit by the following stages.First,According to the systematic summary of the geological background and geological characteristics of the deposit,we found the metallogenic rules and patterns,and on the basic of which we built the prospecting model.Second,we collected the relevant geological data of the deposit,and transformed the data format according to the requirements of the modeling,and established the geological database,including the basic geological data,the mining exploration data and the drilling data and so on.Then,we selected the appropriate 3D geological modeling software to establish a three-dimensional geological model of the deposit by utilizing a well-established geological database.based on the prospecting model of mineral deposits,a quantitative analysis is made of the attribute models of each ore-controlling element.We can establish the three-dimensionality prediction model according this.With the help of three-dimensional information method and three-dimensional evidence weight method in applied geostatistics,we made a quantitative forecasting and the range of favorable metallogenic regions was determined as information value is greater than 1.8 and posterior probability value is greater than 0.9.According to this,the known ore body positions were eliminated and 5 favorable target areas were delineated.The final calculation of the 5 favorable target areas of the deposit was 10982.8 tons,and the results of the study were evaluated in a probabilistic manner,and the risk assessment was 86.75%.This study puts forward some suggestions for the follow-up exploration and development of mineral deposits through the work of locating,quantifying and predicting the three-dimensional metallogenic prognosis,delineating the target area and predicting the amount of resources.At the same time,it provides some technical support and ideas for the exploration and development of other deposits in the Xiangshan Basin.