中心回线瞬变电磁法和直流电测深资料一维Occam联合反演  

One-dimensional Occam joint inversion of central-loop TEM data and direct current sounding data

作　　者：刘晓 郑芳文[1] 宋双林 梁运涛 LIU Xiao;ZHENG Fangwen;SONG Shuanglin;LIANG Yuntao(National and Local Joint Engineering Laboratory of Hydraulic Engineering Safety and Efficient Utilization of Water Resources in Poyang Lake Basin,Nanchang Institute of Technology,Nanchang 330099,China;National Key Laboratory of Coal Mine Safety Technology,CCTEG Shenyang Research Institute,Fushun 113122,China)

机构地区：[1]南昌工程学院鄱阳湖流域水工程安全与资源高效利用国家地方联合工程实验室,江西南昌330099 [2]煤科集团沈阳研究院有限公司煤矿安全技术国家重点实验室,辽宁抚顺113122

出　　处：《南昌工程学院学报》2019年第6期115-118,共4页Journal of Nanchang Institute of Technology

基　　金：江西省教育厅科学技术研究项目(GJJ171006);国家自然科学基金资助项目(51574148)

摘　　要：瞬变电磁方法对高阻层反应不灵敏,一维反演会带来一些虚假构造信息,为提高瞬变电磁反演的精度,将中心回线瞬变电磁的视电阻率数据和直流电测深视电阻率数据联合起来进行反演,应用Occam方法找到拟合观测数据的最平滑模型。结果表明联合反演能有效消除单一方法存在的一些缺陷,并具备一定的抗干扰能力,较好地还原了五层模型算例中的高阻目标层和低阻目标层,联合反演显著地改善了反演效果。The transient electromagnetic method is insensitive to high resistance formation and one-dimensional inversion may bring some false structural information.To improve the accuracy of TEM inversion,we study in this paper the joint inversion of direct current sounding data and central-loop TEM data and use Occam method to find the smoothest model fitting observation data.The results show that the joint inversion can effectively eliminate some defects of the single method and have a certain anti-jamming ability.The high-resistance target layer and the low-resistance target layer are effectively restored in the example of five-layer model.The joint inversion improves the inversion effect significantly.

关 键 词：瞬变电磁法 联合反演 OCCAM反演 

分 类 号：P631.325[天文地球—地质矿产勘探]