基于放射性测量的离子吸附型稀土矿勘探方法设计  

Design of exploration method for ion-adsorption rare earth ore based on radioactivity measurement

作　　者：赵立志 Zhao Lizhi(The Fifth Geological Survey Institute of Qinghai Province,Xining Qinghai 810000,China)

机构地区：[1]青海省第五地质勘查院,青海西宁810000

出　　处：《煤化工》2023年第5期141-144,149,共5页Coal Chemical Industry

基　　金：2022年度第一批青海省清洁能源矿产专项资金项目(2022013031qj021)。

摘　　要：为推进离子吸附型稀土矿的勘探进程,提出基于放射性测量的离子吸附型稀土矿勘探方法。分析了稀土元素在风化壳中的分布特征,采用γ能谱测量方法测量离子吸附型稀土矿内稀土元素的放射性,根据放射性测量结果,以Delaunay三角剖分原理为基础,划分矿块的最优剖面,同时引入基于剖面的反距离加权空间插值算法,计算矿体微元的品位以及稀土氧化物的储量,实现对离子吸附型稀土矿的勘探。测试结果表明:该方法可准确地勘探矿区的矿石量、稀土资源量以及平均品位,具有较高的勘探精度。In order to promote the exploration process of ion-adsorption type rare earth ore,a new exploration method of ion-adsorption type rare earth ore based on the radioactivity measurement was proposed.The distribution characteristics of rare earth elements in weathering crust were analyzed,and the radioactivity of rare earth elements in ion-adsorption rare earth ore was measured withγspectrum measurement method.Based on the radioactive measurement results and the Delaunay triangulation principle,the optimal section of the ore block was divided.At the same time,the profile-based inverse distance weighted spatial interpolation algorithm was introduced to calculate the grade of ore body microelements and the reserves of rare earth oxides,achieving the exploration of ion-adsorption type rare earth minerals.The test results indicated that this method could accurately explore the amount of ore,rare earth resources and average grade in the mining area,with high exploration accuracy.

关 键 词：放射性测量 离子吸附型稀土矿 γ能谱测量方法 Delaunay三角剖分原理 反距离加权空间插值算法 

分 类 号：P577[天文地球—矿物学]