地球物理探测技术在自然资源综合调查中的应用  

Application of Geophysical Exploration Technology in Comprehensive Survey of Natural Resources

作　　者：刘松杭 康建坤 曾冠中 张伟[1] 杨浪 李猛 LIU Songhang;KANG Jiankun;ZENG Guanzhong;ZHANG Wei;YANG Lang;LI Meng(Geophysical Survey Center of China Geological Survey,Langfang 065000,China)

机构地区：[1]中国地质调查局地球物理调查中心,河北廊坊065000

出　　处：《中国资源综合利用》2023年第11期37-39,共3页China Resources Comprehensive Utilization

摘　　要：宜城市位于湖北省西北部,地处汉江中游,是汉江生态经济带的重要节点城市。在自然资源综合调查中,常用的地球物理探测技术有两种,即高密度电法和微动勘探法。本文以宜城市为研究区,采用高密度电法和微动勘探法进行调查,获得电阻率二维成像图,对其异常形态进行分析,从而查明地表基质层厚度、基岩和破碎带发育等情况。结果表明,高密度电法与微动勘探法可用于确定地表基质层厚度,区分地表基质层和岩石的分界面,效果良好;根据电阻率的分布及变化趋势,自然资源综合调查可以较好地确定地表基质层的空间分布特征和基岩特征,但容易受到外界因素的影响,这就需要人为排除干扰。经钻探资料验证,高密度电法和微动勘探法的综合推断结果与实际情况吻合。Yicheng City is located in the northwest of Hubei Province,in the middle reaches of the Hanjiang River,and is an important node city in the Hanjiang River Ecological Economic Belt.In the comprehensive survey of natural resources,there are two commonly used geophysical exploration technologies,namely high-density electrical method and microseismic exploration method.Taking Yicheng City as the research area,this paper uses high-density electrical method and microseismic exploration method to conduct a survey,obtains two-dimensional electrical resistivity imaging map,and analyzes its abnormal form,thus identifying the thickness of surface matrix layer,development of bedrock and fracture zone,etc.The results indicate that high-density electrical method and microseismic exploration method can be used to determine the thickness of surface matrix layer and distinguish the interface between surface matrix layer and rock,with good results;based on the distribution and change trend of electrical resistivity,the comprehensive survey of natural resources can better determine the spatial distribution characteristics of the surface matrix layer and the characteristics of the bedrock,but it is susceptible to external factors,which requires human intervention.After verification by drilling data,the comprehensive inference results of high-density electrical method and microseismic exploration method are consistent with the actual situation.

关 键 词：自然资源综合调查 地球物理探测技术 高密度电法 微动勘探法 

分 类 号：P631.8[天文地球—地质矿产勘探]