综合物探方法在张家口地区矽卡岩型铁矿的找矿应用  

The application of comprehensive geophysical method in skarn\|type iron deposit prospecting at Zhangjiakou region

作　　者：田玉杰 贾晓鹏 王文文 TIAN Yujie;JIA Xiaopeng;WANG Wenwen(The 9 th Geological Team of Hebei Geology and Mineral Exploration&d Development Bureau,Xingtai 054000,Hebei,China)

机构地区：[1]河北省地质矿产勘查开发局第九地质大队,河北邢台054000

出　　处：《地质装备》2024年第3期26-31,共6页Equipment for Geotechnical Engineering

摘　　要：矽卡岩型铁矿是一种重要的矿产资源,具有较高的开采价值。随着找矿理论和找矿方法的不断进步,张家口地区具有巨大的找矿的潜力。本次在以往工作的基础上,利用最新的1∶25 000航磁图圈定成矿的有利位置,开展地面高精度磁测和数据处理解译工作,对磁异常进行了详细解剖,确定了钻孔位置,并利用井中磁测寻找井旁、井底盲矿体,指导钻机钻进。通过“航–地–井”结合的综合物探方法,借鉴邯邢式铁矿床的找矿经验进行地球物理模型的建立和反演处理,更加准确地确定矿体的位置、形状和规模,为地质找矿提供重要的技术支持。同时,钻探结果也证明了综合物探方法的有效性。本次工作资源量增加1800余万吨,发现的矽卡岩型矿床是张家口地区,甚至是河北省内矽卡岩型接触交代式铁矿的一个新类型。Skarn iron ore is an important mineral resource with high mining value.With the continuous progress of prospecting theory and methods,there is great potential for prospecting at Zhangjiakou region.On the basis of previous work,this paper uses the latest 1∶25,000 aeromagnetic map to delineate the favorable location of mineralization,carries out high-precision ground magnetic survey and data processing interpretation,detailed dissection was conducted on the magnetic anomaly to determines the borehole position,and use magnetic survey in boreholes to search for blind ore bodies near and at the bottom of boreholes to guide the drilling machine to drill.Through the comprehensive geophysical prospecting method of‘air-ground-borehole’,the geophysical model is established and inverted by referring to the prospecting experience of Hanxing style iron ore deposit to more accurately determine the location,shape and size of the ore body and provide important technical support for geological prospecting.At the same time,the drilling results also prove the effectiveness of the comprehensive geophysical prospecting method.The amount of resources for this work has increased by more than 18 million tons,and the discovered skarn type deposit is a new type of contact metasomatic iron ore deposit of skarn type at Zhangjiakou region,or even in Hebei province.

关 键 词：综合物探 矽卡岩型铁矿 航磁 

分 类 号：P631[天文地球—地质矿产勘探]