南秦岭迭部地区碳硅泥岩型铀矿资源定量预测评价

通过对南秦岭迭部地区碳硅泥岩型铀矿成矿地质条件和成矿地质特征的研究,确定了铀矿床的关键控矿因素和成矿远景预测要素。在此基础上,利用MapGis软件对各要素进行了空间定位,并系统编制了成矿要素图和预测要素图;应用MRAS软件对预测要素进行配置,选取其最佳的预测要素组合,构置预测变量,并计算变量与铀成矿的相关性、最小单元成矿有利度,利用人机联合圈定、优选出最小靶区。最后,采用修正体积法和德尔菲法对资源进行定量和半定量估算,并对靶区进行可信度评价和分级。

Quantitative Resource Evaluation of Carbonaceous siliceous argillaceous Rock Type Uranium Deposit in Diebu Area,South Qinlin

By studying the typical uranium deposits in Diebu region of southern Qinling mountains,this paper systematicaly analyzed the geological conditions and features of the deposits,and defined the critical metallogenic factors and prediction elements.MapGis software was used to orientate each factor's spatial location and compiled the map of metallogenic and predict factors.MRAS software was applied to arrange the prognosis factors,select the best prognosis factors combination,compose prediction variables,and calculate the correlation between variables and uranium mineralization and the ore-forming favorability of the minimum unit,locate and optimize the best areas with human interpretation.The resource was quantitatively and semi-quantitatively estimated with the method of modified volume and Delphi,the target units was classified and valued.