风化壳淋积型稀土矿勘探网度优化的特征点法  

Characteristic point method for optimizing exploration network of weathered crust elution-deposited rare earth ore

作　　者：邓祖建 龙平[1] 洪本根 黄豪 王明照 王观石[1] 钟贞明 DENG Zujian;LONG Ping;HONG Bengen;HUANG Hao;WANG Mingzhao;WANG Guanshi;ZHONG Zhenming(School of Civil and Surveying&Mapping Engineering,Jiangxi University of Science and Technology,Ganzhou 341000,Jiangxi,China;Xiamen Tungsten Industry Co.,Ltd.,Xiamen 364000,Fujian,China;Jiangxi College of Applied Technology,Ganzhou 341000,Jiangxi,China)

机构地区：[1]江西理工大学土木与测绘工程学院,江西赣州341000 [2]厦门钨业股份有限公司,福建厦门364000 [3]江西应用技术职业学院,江西赣州341000

出　　处：《有色金属科学与工程》2025年第1期152-162,共11页Nonferrous Metals Science and Engineering

基　　金：国家自然科学基金资助项目(52364015);江西省自然资源厅科技创新项目(ZRKJ20222402)。

摘　　要：风化壳淋积型稀土矿稀土品位具有明显的空间变异性,均匀布置勘探孔容易出现品位变异性大的区域勘探孔不足和变异性小的区域勘探孔过多的问题。本文假设矿体的单位面积稀土质量分布与地形高程的变化剧烈程度存在正相关关系,以地形的特征点作为稀土储量勘探点,建立了风化壳淋积型稀土矿勘探网度优化的特征点法,通过实际矿体讨论该方法的合理性。结果表明,单位面积稀土质量与勘探孔孔口高程的平均曲率的相关系数大于0.390,说明基本假设是合理的。当勘探线与正东的方向夹角在90°附近时,勘探孔数量取得最小值。与实际勘探结果相比,特征点法可以减少20.00%的勘探孔数量,稀土储量的计算误差小于8.00%。研究成果可以为风化壳淋积型稀土矿的高效勘探提供技术支持。Weathered crust elution-deposited rare earth ore exhibits significant spatial variability in rare earth grades.Uniform placement of exploration holes is prone to the problem of insufficient exploration holes in areas of high-grade variability and too many exploration holes in areas of low variability.Assuming that there is a positive correlation between the distribution of rare earth mass per unit area in the ore body and the intensity of changes in terrain elevation,a characteristic point method for optimizing the exploration network of weathered crust elutiondeposited rare earth ore was established by taking terrain features as exploration points for rare earth reserves.The rationality of the proposed method was varied through actual ore bodies.The correlation coefficient between the rare earth mass per unit area and the orifice elevation of exploration holes is higher than 0.390,indicating that the assumption was reasonable.The direction angle of the exploration line is around 90°to due east,where the number of exploration holes reaches a minimum.Compared to the actual exploration results,the characteristic point method can reduce the number of exploration holes by 20.00%,and the calculation error in rare earth reserves is less than 8.00%.The research provides theoretical support for the efficient prospecting for weathered crust elution-deposited rare earth ore.

关 键 词：风化壳淋积型稀土矿 勘探 特征点 垂距法 

分 类 号：TD865[矿业工程—金属矿开采]