一种改进的激发极化测量方法和对比实验研究

发布时间：2018-05-14 10:13

本文选题：激发极化法 + 偶极-偶极　；参考：《地球物理学进展》2017年01期

【摘要】：偶极-偶极测量装置是电法测量中最常见的方法.在本文所提及的斑岩铜矿的勘探项目中,偶极-偶极激电测量作为主要的地球物理勘查方法被广泛使用.但是由于研究区某些区域十分崎岖的地形和很差的进入条件,我们对偶极-偶极装置进行了一定的改进以适应环境的需要.改进后的方法称之为"双极-偶极".为了研究"双极-偶极"的有效性及其与偶极-偶极之间的差异,在同一测线,相同点位上,利用相同的设备,以相同的点距和仪器参数对两种方法进行了对比实验测量.并且简便起见,采用了与偶极-偶极相同的成图方法.随后,对测量数据和拟断面进行了详细的数据分析,最后对两种数据进行了二维反演.分析结果表明:(1)双极-偶极和偶极-偶极方法同样有效(2)双极-偶极和偶极-偶极在充电率结果上有一定差异,但差异很小(3)双极-偶极和偶极-偶极所测得的电阻率有较明显差异,但依然显示出总体的一致性.总而言之,对比试验证明,双极-偶极是非常有效的测量方法.在偶极-偶极难以实施的地方,可以作为偶极-偶极装置的有效补充和替代方法.
[Abstract]:Dipole-dipole measuring device is the most common method in electrical measurement. In the exploration project of porphyry copper deposit mentioned in this paper, dipole-dipole geoelectric survey is widely used as the main geophysical prospecting method. However, due to the rugged terrain and poor entry conditions in some areas of the study area, we have improved the dipole-dipole device to meet the needs of the environment. The improved method is called "bipolar-dipole". In order to study the validity of "bipolar dipole" and the difference between dipole-dipole and dipole-dipole, the two methods are compared and measured by using the same equipment and the same point distance and instrument parameters on the same measuring line and the same point position. For simplicity, the same mapping method as dipole-dipole is used. Then, the measured data and the pseudo section are analyzed in detail, and the two kinds of data are inversed in two dimensions. The results show that the bipole-dipole and dipole-dipole methods are equally effective, and the dipole-dipole and dipole-dipole have some difference in charge efficiency. But the difference is very small (3) the resistivity measured by dipole-dipole and dipole-dipole is obviously different, but it still shows the overall consistency. In a word, the comparison experiment proves that the bipolar-dipole is a very effective measurement method. Where dipole-dipole is difficult to implement, it can be used as an effective supplement and substitute method for dipole-dipole device.
【作者单位】：中国科学院地质与地球物理研究所;中铝矿产资源有限公司;黑龙江省齐齐哈尔矿产勘查开发总院;
【分类号】：P631.324

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