Geological Stress Detection Systems for Tailings Dams Monitoring

Tailings Dams are massive structures used all over for the bulk storage of mineral processing wastes. These earthen structures can measure tens of kilometers in length and width and be hundreds of meters tall. In terms of total volume tailings dams are the largest manmade structures in existence. However, over the last 20 years, the rate of tailings dams failing has doubled. Failures of tailings dams are perhaps the worst possible case scenario for any mineral extraction operation. Events causing loss of life, environmental fines reaching billions of dollars and the loss of facility infrastructure and production are a major concern.

HAWK Fiber Optics, a leading provider of fiber optic tailings dam monitoring systems, has developed a solution to prevent tailings dam failure. HAWK's Praetorian Geological Stress Detection System utilizes fiber optic sensing technology for the real-time monitoring of field strain within earthen structures. This revolutionary technology uses fiber optic cables that are then inserted into the structure through drilled boreholes. These cables monitor field strain and deflection caused by dam loading and report both the borehole position and depth where the strain or deflection is occurring within the retaining wall structure. Sensitivities achievable with the Praetorian Geological Stress Detection System means that potential issues with ground shift can be detected and intercepted well in advance of visual symptoms of structural issues.