直流电阻率测深中二维反演程序对三维数据的近似解释  

Approximate Interpretation of 3-D Data Using 2-D Inversion Program in the DC Resistivity Sounding

作　　者：熊彬[1] 阮百尧[2] 黄俊革[2] 

机构地区：[1]中国地质大学物探系,湖北武汉430074 [2]桂林工学院,广西桂林541004

出　　处：《地球科学（中国地质大学学报）》2003年第1期102-106,共5页Earth Science-Journal of China University of Geosciences

基　　金：国家自然科学基金 (No .40 0 64 0 0 1) ;广西自然科学基金匹配项目 ;教育部优秀青年教师基金项目 ;广西培养新世纪学术和技术带头人专项资金资助的部分研究内容 .

摘　　要：直流电阻率测深剖面数据解释最好的方法是二维反演 ,这是由于它反演速度快 ,而三维反演则需要很多的实测数据、很长的计算时间 .而且通过对几种三维模型测深数据的二维反演结果的研究 ,发现尽管对无走向的良导矿体 ,二维反演方法所圈定的异常中心与真实矿体中心有一定的误差 ,但基本上还是能反映矿体的真实形态和中心位置 .当矿体具有一定的走向长度时 ,则无论对高阻矿体还是良导矿体二维反演的效果都很好 .The 2 D inversion is the best method in the interpretation of DC resistivity sounding profiles data owing to its high speed, but the 3 D inversion, by contrast, needs more measured data and more computer time. Through the 2 D inversional study of several 3 D models, we know that for the good conductor ore body without strike, there is some deflection between the center of real ore body and the center of anomaly enclosed by the 2 D inversion, however, the anomaly can still reflect the true shape and the center position of the ore body in the main. When the ore body has certain lengths in strike, the effect of 2 D inversion is good to it, no matter its resistivity is high or low.

关 键 词：直流电阻率测探 二维反演 三维模型 地质构造 矿体 

分 类 号：P631.322[天文地球—地质矿产勘探]