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Introduction In the fields of mineral resource exploration, engineering geological surveys, and groundwater resource assessment, electrical exploration technologies have emerged as fundamental underground detection methods due to their non-destructive nature and high-resolution capabilities. This paper provides a comprehensive comparison of…

1. Introduction Geophysical exploration methods play a critical role in subsurface investigations. Among them, resistivity-based techniques are widely used due to their high sensitivity to electrical property variations. This article systematically compares four core resistivity methods: High-Density Resistivity (HDR), DC Resistivity Sounding, 2D…

1. Technical Definition & Principles ERT reconstructs 3D subsurface resistivity models through electrode arrays. When geological structures (e.g., rock layers with 10-1000 Ω·m resistivity) exhibit conductivity differences, Geotech’s systems (such as the WGMD-10X) inject 0.1-5A currents and measure millivolt-level potential…