Layer and Piping Detection in Dikes

A crucial activity for the safety of dikes is the early detection of piping, where water flows under dikes, as this can cause dike breaches. Current dike inspections often involve visual inspections, geophysical surveys, or piezometers to measure water pressure. These techniques often lack the precision to obtain the necessary information, especially for detecting subtle changes in internal structures or early-stage piping. Another problem is that the measurements can sometimes be difficult to perform.

The benefits of quantum sensors, especially quantum magnetometers and gravimeters, for this use case can be summarized as higher sensitivity to detect smaller variations in soil composition and water content compared to classical methods, the possibility of non-invasive measurements that eliminate the need for drilling or digging, and the ability to continuously monitor, as some quantum sensors (e.g., those based on diamond defects) exhibit very high durability and robustness.

Accurately mapping internal dike structures and detecting water flows are vital to prevent dike failures that can lead to floods, optimize maintenance and repair schedules, and improve overall flood protection strategies. Early detection of piping can save lives and prevent economic losses.