Ground Penetrating Radar Underwater for Condition Assessment of Stilling Basins


 In today’s infrastructure inspection world, advanced technologies like Ground Penetrating Radar (GPR) are revolutionizing how we assess the health of underwater structures. One such important application is the condition assessment of stilling basins, which are crucial components in dams and hydro projects. These basins reduce the energy of flowing water and protect downstream structures, making their maintenance vital for overall safety.

Parsan, a leader in geophysical services, is among the few companies successfully deploying GPR under challenging underwater environments for accurate analysis.

What is Ground Penetrating Radar (GPR)?

GPR is a non-destructive technique that uses radar pulses to image the subsurface. It is widely used in geotechnical surveys, infrastructure assessments, and now — thanks to recent advancements — even in underwater conditions.

Using GPR Underwater for Stilling Basin Inspection

Inspecting stilling basins is traditionally difficult due to water depth, turbidity, and accessibility. However, with modified GPR systems and waterproof antennas, it is now possible to perform subsurface imaging underwater. This allows engineers to detect:

  • Voids or erosion under the concrete structure
  • Cracks and delamination in the basin floor
  • Sediment accumulation
  • Structural weakening over time

With Parsan’s expertise, underwater GPR surveys are conducted with precision, ensuring minimal disruption and maximum data accuracy.

Why Use GPR for Stilling Basin Assessment?

  • Non-invasive: No drilling or excavation needed
  • High Resolution: Detects even small subsurface defects
  • Efficient: Covers large areas in shorter time
  • Cost-effective: Prevents future failures by early detection

Conclusion

As infrastructure ages, tools like Ground Penetrating Radar become essential for proactive maintenance. Parsan is proud to be at the forefront of using GPR for underwater stilling basin assessments, ensuring long-term safety and operational reliability. With such technologies, we can protect vital water structures and optimize repair strategies before problems grow severe.

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