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在高密度电法等工程地球物理实践中,往往采用传统的如最小二乘等光滑反演手段,对其它反演方法及先验信息的利用考虑得较少。本文针对地下电性异常存在尖锐边界的地质体,将传统最小二乘光滑反演和不常用的迭代重加权尖锐反演结果进行了对比分析,通过针对性模型试验和实际资料处理,证明在解决该类地质问题时通过采用合理的反演手段和方法,可达到增加反演精度,突出电性目标和便于地质解释的目的。
In engineering geophysical practice such as high-density electrical method, the traditional methods of smooth inversion such as least squares are often used, and the use of other inversion methods and prior information is considered less. In this paper, aiming at the geologic bodies with sharp boundary in the anomalous underground electricity, the contrastive analysis of the traditional least square smooth inversion and the less commonly used iterative reweighted sharp inversion results are carried out. Through the targeted model test and the actual data processing, This kind of geological problems can achieve the purpose of increasing the accuracy of inversion, highlighting the electrical targets and facilitating geological interpretation by adopting reasonable inversion methods and methods.