角域地形点源电场解析计算及其在高密度电阻率法地改中的应用  

The analytical calculation of the angle domain topographic point-source electric field and its application to high density resistivity method for topographic correction

作　　者：徐志敏 昝崇信 肖晓[2] 李晋[2] 辛会翠[2] 

机构地区：[1]西北综合勘察设计研究院,陕西西安710003 [2]中南大学地球科学与信息物理学院,湖南长沙410083

出　　处：《物探与化探》2014年第3期534-538,共5页Geophysical and Geochemical Exploration

基　　金：国家自然科学基金项目(41174105);湖南省教育厅资助科研项目(11B074)

摘　　要：通过角域叠加的方法获得由纯地形引起的视电阻率异常,采用比值法对边坡地形条件下的高密度电阻率法测量数据进行地形校正,并结合测区钻孔地质剖面分析地改效果。结果表明:角域地形改正的方法是有效的,地改后的反演断面与实际的地质情况更加接近,效果较好。With the angle domain overlay method, the apparent resistivity anomaly produced on pure landform was obtained;by adop-ting the ratio method, topographic correction was made for high density resistivity measuring data under the condition of slope topogra-phy;in combination with the drill hole geological sections in the surveying area, the effects of the topographic correction were analyzed. The results show that the method of angle domain topographic correction is effective, as is shown by the facts that the inverse sectional drawing after the topographic correction is closer to the practical geological situation, and the effects are fairly satisfactory.

关 键 词：高密度电阻率法 地形校正 角域 边坡 

分 类 号：P631[天文地球—地质矿产勘探]