One of the main risks of cost-effective mining is the lack of sufficient geological information about the concession area, without which effective mine planning cannot be realized. By omitting the necessary steps of research, it can easily happen that investors choose a long-term unprofitable investment.
Numerous studies point out that geological uncertainty is one of the main causes of mining failures.
To understand local geological conditions, it is recommended to apply engineering geophysical methods at the very beginning of the planning process. Both electrical resistivity tomography (ERT), induced polarization measurements (IP), and magnetic measurements play an important role in raw material exploration. There are several application areas where these methods can support mining activities:
1. Exploration of rocks and minerals
By performing measurements, sand bodies, gravel aggregates, and igneous rocks (basalt, andesite) with significant resistivity differences compared to their surroundings can be well identified. The cost of research is orders of magnitude lower compared to the unpredictable costs associated with the extraction and movement of waste rock, making geophysical exploration of concession areas a highly profitable investment.
Our methods help in the detection of ore bodies by examining various physical parameters. Different minerals have specific resistivity and electrical chargeability characteristics, based on which the locations of metallic ores or non-metallic minerals can be identified. Our magnetic surveys provide valuable information about geological structures, which can help determine the extent and depth of ore deposits.
2. Mapping fault lines
With the application of ERT, geological structures, including fault lines and stratigraphic boundaries, can be mapped. This information is crucial for determining the feasibility of mining operations.
- Detection of fractures: AIdentifying fault lines can reduce the risks of structural instability.
- Rock quality determination: By applying high-resolution tomography, the geological sequence described by geotechnical drilling can be extended laterally, thereby assisting in making decisions for mine development and tunnel construction.
3. Mud reservoir monitoring
The ERT method is suitable for checking stability and integrity tasks. Waste management facilities pose significant environmental risks if they fail.
- Detection of leaks and seepage points: ERT can identify areas where water is seeping through the reservoir.
- Assessment of structural integrity: By continuously monitoring resistivity changes, ERT can assess the internal structure of the reservoir, providing early warning signs of instability.