Knowledge base

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…