自然电场法在冀北围场县浅覆盖区某萤石矿勘查中的应用  

Application of the natural electric field method to the exploration of a fluorite deposits in the shallow covered area of Weichang County

作　　者：杨磊 付荣钦[1] 王晓东 付东阳[1] 张立剑[1] YANG Lei;FU Rongqin;WANG Xiaodong;FU Dongyang;ZHANG Lijian

机构地区：[1]河北省地质矿产勘查开发局第四地质大队(河北省水源涵养研究中心),河北承德067000

出　　处：《物探装备》2024年第1期52-55,共4页Equipment for Geophysical Prospecting

摘　　要：围场北部地区萤石矿床发育,多为热液充填型萤石矿床,萤石矿的产出与断层密切相关。研究区被黄土和冲洪积砂砾层覆盖,通过常规地质手段很难到达寻找矿体的目的。而自然电场法相对其他地球物理方法具有施工便捷、成本低、速度快的特征,对于寻找浅覆盖区的含水断层具有良好的效果。本次工作经过综合研究研究区的地质和矿体特征,首次通过自然电场圈出了含水构造的范围。在重点剖面布设钻孔进行验证,见到了厚度较大的萤石矿体,通过寻找含水断层间接达到了寻找萤石矿的目的。这为冀北其他此类型矿山找矿提供启示和借鉴经验。Fluorite deposits are developed in the northern area of Weichang,most of which are hydrothermal filled fluorite deposits.The exploration area is covered by loess and alluvial sand and gravel layers,so it is difficult to reach the purpose of searching for ore bodies by conventional geological means.Compared with other geophysical methods,natural electric field method has the characteristics of convenient construction,low cost and fast speed,and has a good effect on finding water-bearing faults in shallow covered areas.Through the comprehensive study of geology and orebody characteristics of the mining area,the scope of water-bearing structure was circled by natural electric field for the first time.In the key section,drilling holes were laid for verification,and a thicker fluorite ore body was found.The purpose of searching for fluorite ore was achieved indirectly by sear-ching for water-bearing faults.This provides inspiration and experience for other mines in northern Hebei Pro-vince.

关 键 词：自然电场法 浅覆盖区 萤石矿 含水断层 钻孔验证 

分 类 号：P631[天文地球—地质矿产勘探]