高密度电阻率法在章丘—邹平地区地表基质层调查中的应用

Application of High Density Electrical Resistivity Method in Zhangqiu—Zouping Surface Matrix Layer Survey

摘要:

依托山东省章丘—邹平地区地表基质层调查项目，探索高密度电阻率法在地表基质层调查中的应用效果。对同一剖面不同观测装置的观测效果进行了研究，通过与地质、钻探等资料的对比分析，阐述了温纳装置、偶极-偶极装置在高密度电法研究地层分层方面的可行性，为相同地质条件地表基质层调查规范的拟定提供了技术支撑。完成高密度电法测线5条，分别用2 m极距和5 m极距探明了10 m以浅和50 m以浅地层电阻率异常规律，反演解释了地层层位分布，对地表基质层的划分提供了依据。

Abstract:

Based on the investigation project of surface matrix layer in Zhangqiu—Zouping area in Shandong province, application effect of high density resistivity method in the investigation of surface matrix layer has been studied. The resistivity reflects different rules under different device conditions at the same point of the same section. Through comparative analysis with geological and drilling data, the feasibility of Wenner device and dipole-dipole device in the study of stratigraphic stratification by high-density electrical method has been expounded. It will provide technical support for the formulation of the investigation standard of surface matrix layer under the same geological conditions. Five high-density electrical survey lines have been completed, and the resistivity anomalies of shallow strata above 10m and 50m are proved by 2m polar distance and 5m polar distance respectively. The inversion has explained stratigraphic distribution and provided a basis for the division of surface matrix layers.