从图件上量取产状对矿体厚度计算的影响  

The Effect for Orebody Thickness Calculationof Measuring Occurrence on the Map

作　　者：王勇 刘正锋 WANG Yong;LIU Zheng-feng(108 Geological Team,Sichuan Bureau of Geology&Mineral Resources Chengdu 611230,Sichuan,China;Qinghai Nonferrous Geological and Mineral Exploration Bureau third geological exploration institute,Xining 810012,Qinghai China)

机构地区：[1]四川省地质矿产勘查开发局108地质队,四川成都611230 [2]青海省有色第三地质勘查院,青海西宁810012

出　　处：《贵州地质》2022年第3期294-299,共6页Guizhou Geology

摘　　要：厚度是矿体圈定和固体矿产资源量估算的重要参数,其计算的精确性主要依据于矿体产状的准确性。目前大量隐伏有色、稀有、稀散、贵金属矿体形态多不规则,矿体边界确定多依据化验测试数据,其产状难以直接测定。在实际生产工作中,多采用从基础图件量取数据确定矿体产状,此方法简便易行。本文通过对比视倾角、伪倾角、真倾角在样品方位、剖面方向和矿体倾向间的不同夹角下计算出的矿体厚度数据,认为用从图件量取的产状数据计算出的矿体真厚度能满足矿产资源量估算的精度要求,能有效减少地质块段法与断面法估算资源量的误差。Thickness is an important parameter for ore body delineation and mineral resources estimation,the precision accuracy of its calculation is mainly based on the correctness of ore body occurrence.At present,a large number of hidden nonferrous metals,rare,rare and scattered,precious metal ore body shape is irregular,most of delimit the ore body boundary based on the test data,direct measurement of its occurrence is difficult.In the actual production work,often use from the basic map measurement data to determine the ore body occurrence,this method is simple and easy to work with.In this paper,by comparing the ore body thickness data calculated using the false dip angle and apparent dip angle and true dip angle at the different intersection angle of Sample direction and Section direction and ore body dip,it is considered that the ore body thickness was calculated using the measurement data from the map can meet the precision accuracy requirements of mineral resources estimation,it can effectively reduce the error of mineral resources estimation between the Geological block method and cross section method.

关 键 词：真厚度 产状 伪倾角 视倾角 真倾角 

分 类 号：TD17[矿业工程—矿山地质测量] P25[天文地球—测绘科学与技术]