Watch our video above to learn how XSeepT reduces the risk of dam failure
XSeepT utilises the highest spatial resolution temperature data from Silixa’s ULTIMA DTS, distributed temperature sensor, to detect small seepage flow changes and to calculate seepage rates in a dam structure. Any change in the seepage flow rates can be an indication of erosion, one of the most common causes of dam failure.
The seepage flow causes a seasonal temperature variation inside the dam. With Silixa’s range of distributed fibre optic sensing technologies and fibre optic cables this seasonal temperature variation can be measured with excellent spatial resolution along an embankment or tailings dam.The measured data can then, via XSeepT (a real-time data evaluation system), be used for automatic evaluation of the seepage flow through the dam.
This temperature variation is therefore dependent on seepage flow, the seasonal variation at the inflow boundary, and the distance from the boundary to the measuring point. As the seepage flow increases the temperature in the dam will change, and the seasonal variation will increase as shown in the figure. Generally, a constant temperature indicates a minimal seepage of fluid, whilst large seasonal variations may indicate significant seepage.
Temperature variation at increasing seepage