Seepage detection-based hydropower dam monitoring
XSeepT, from HydroResearch, is a high-precision distributed fibre optic sensing-based seepage monitoring system that provides continuous understanding of dam conditions. It uses the ULTIMA™ DTS distributed temperature sensor to detect small seepage flow changes and to calculate seepage rates in a dam structure. To read more click here.
High-resolution strain monitoring
Silixa’s distributed strain sensing (DSS) system provides continuous measurements the strain applied on fibre optic cable. Movements along the dam can be detected, and the location and magnitude identified.
Using ambient noise for passive seismic monitoring
Recent developments in Silixa’s DAS technology, including both monitoring and analysis techniques, give an additional method to monitor the seepage and internal erosion phenomena in dams to provide more accurate information on the integrity.
The extreme sensitivity of Silixa’s Carina® Sensing System, the precision engineered distributed acoustic sensor, enables passive seismic monitoring using recordings of the ambient noise field or monitoring of the sound of flowing water, making use of acoustic emissions.
Using pre-installed fibre optic cables for a more detailed insight into structures — distributed acoustic measurements
There are many dams that have fibre optic cables already installed, in most cases for temperature or strain monitoring.
Using Silixa’s intelligent Distributed Acoustic Sensor (iDAS™), complementary acoustic measurements can be acquired to detect anomalous seepage flow in dams without a drainage system, and to detect this flow at some distance from the cable. This can give a more detailed and reliable insight into the integrity of dams.
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