In the case of the Varaždin spa area, thermal imaging cameras and UAV equipped with RGB cameras were used to detect hot spots and create a 3D model of the observed condition.
Thermal imaging cameras are capable of detecting temperature differences in the ground.
The thermal water in buried pipelines is warmer than the surrounding soil, which heats the ground directly above the pipeline.
The warmer positions on the ground indicate the flow of thermal water under the ground, and these positions were detected by the thermal imaging cameras.
This allows for a better understanding of the thermal water flows in the observed area.
The thermal imaging was performed at night, when the ambient temperatures were as low as possible, and solar radiation did not affect the results.
This allowed for accurate detection of hot spots and warm positions on the ground.
In addition to the thermal imaging, an unmanned aerial vehicle equipped with an RGB camera was also used to analyze the specifics of the location and collect photos to create a 3D model and orthophoto of the observed condition.
A Total of 5 Hot Wells and 4 Hot Spots
This allowed for a clear interpretation of the results obtained from the thermal imaging and helped place them spatially precisely.
The use of different tools and cameras allowed for the detection of five hot wells, four hot spots indicating the flow and rotation of thermal water, and a pipeline line from the middle of the road to the tap in the survey area.
These detected warm positions will help the client better understand the unknown thermal water flows under the ground, along with their prior knowledge of the situation on the ground.
In conclusion, the use of advanced technologies and tools like thermal imaging cameras and unmanned aerial vehicles equipped with RGB cameras is crucial for detecting unknown pipelines and defining the flow of underground thermal water.
The results obtained from these technologies and tools will help the clients better understand the flow of thermal water and make informed decisions regarding their management and utilization.