Problem:

Water leakage in the power station cooling tower

Project Objective:
Soil Assessment to highlight areas of weakness and risk that needs an immediate solution and reparation.

Interpretation:

A GPR survey was conducted to the cooling tower with the water leakage problem where we used two types of filters first to spot the water saturation zones and the second one to spot the weak, fractures & possible voids that could be created due to the high-pressure water leakage.

A second survey was conducted to the same building after engineering treatment to the spotted weak zones using injection method to check the reliability of the solution.    

Conclusion:

Using the processed radargrams for soil investigation, no significant anomalies revealed during the second survey beneath ground surface till 5 m depth.

Based on the results of the second GPR survey at cooling tower URA-20 and compared to the results of the first conducted GPR survey, the following can be concluded:

1- The possible voids highlighted in the first survey had been treated, as nearly all the prominent anomalies for the possible voids either vanished or severely retreated during the conducted second survey.

2- The water saturation filter shows significant declination at the water saturation levels compared to the first survey results, in addition to the disappearance of the revealed weak zones spotted during the first survey.

3- In general, the treatment process that took place in the last 3 months has a significant positive impact on the soil conditions beneath cooling tower with respect to the conducted GPR survey before and after the treatment.