摘要
借助矿业三维建模软件3DMine建立了矿床的钻孔数据库,对矿体内部的样品分析数据进行组合。面对形态复杂的矿体,根据实际情况,结合其样品品位统计分布特征,对样品分析数据进行分段,并应用地质统计学理论对数据进行了处理,使其满足普通克里格计算。建立了符合区域化变量TCu品位参数变异规律的数学模型,采用球面模型拟合求得变异函数参数,经过交叉验证,优选出理想的实验变异函数参数。采用计算获取的参数值,使用普通克里格法对矿块的TCu品位进行估值,并估算出整个矿体的品位及其资源量。与传统方法进行对比结果表明,所建模型有效,估算结果准确可靠,可用于矿山后续设计工作。
Boreholes database of the deposit is created by using software 3DMine,and the data of samples from the ore bodies are combined together.Since the authors were dealing with complicated ore bodies,they divided the analytic data of the samples into sections by taking consideration of the actual situation and the statistical characteristics of the grades of samples.The authors also treated the data based on geostatistical theories to ensure the data could meet the requirements of Ordinary Kriging method.The paper set up a mathematical model which was consistent with variation regularities of regional variable TCu grade,and optimal experimental variation function parameters were acquired after variation function parameters were calculated by using a spherical model fitting and cross verification.Based on the referential values,the authors estimated the TCu grades of ore blocks by applying Ordinary Kriging method,hence the grade and quantity of the resource of the entire mine were estimated.Compared with the traditional method,the model set up in this paper is proved to be effective with accurate and reliable estimation results,and it can be used in the follow-up design of the mine.
出处
《矿产与地质》
2017年第4期826-832,共7页
Mineral Resources and Geology
