西藏多龙矿集区拿若铜(金)矿床三维模型构建及矿体资源量估算

Three-dimensional Model Construction and Ore Body Resource Estimation of Naruo Copper(Gold)Deposit in Duolong Ore Concentration Area,Tibet

对矿床进行三维模拟分析及矿体资源量估算时,易受到矿体展布位置及形态的影响,导致建模出现误差和资源量估算不准的问题。以拿若铜(金)矿床为例进行三维模型构建及矿体资源量估算优化分析。首先,分析矿床地质和矿体特征;其次,根据特征情况,确定全部钻孔的孔口坐标、岩心基本分析数据、测量数据和地层信息相关数据,并将这些数据导入Micromine软件中,生成数据库;然后,以数据库的建立为基础,结合资源储量估算工业指标,构建矿床三维立体模型;最后,采用距离反比法进行资源量估算。通过传统地质块段法验证,证明运用距离反比法进行资源量估算方法合理、结果可靠,有利于实现矿山资源储量的动态估算,为采矿设计提供依据。

When the three-dimensional simulation analysis of the deposit and the estimation of the ore body resources are carried out,it is easy to be affected by the distribution position and shape of the ore body,resulting in errors in modeling and inaccurate estimation of the resources.Taking the Naruo copper(gold)deposit as an example,the three-dimensional model construction and ore body resource estimation optimization analysis are carried out.Firstly,the geological and ore body characteristics of the deposit are analyzed.Secondly,according to the characteristics of the situation,determine the hole coordinates of all boreholes,core basic analysis data,measurement data and formation information related data,and import these data into Micromine software to generate a database.Then,based on the establishment of the database,combined with the industrial index of resource reserves estimation,a three-dimensional model of the deposit is constructed.Finally,the inverse distance method is used to estimate the amount of resources.Through the verification of the traditional geological block method,it is proved that the inverse distance method is reasonable and reliable,which is conducive to the dynamic estimation of mine resource reserves and provides the basis for mining design.