- Rapport
- Vattenkraft
Echo sounding technology for inspection of earth- and rockfill dams
| 1999:27 | Roger Östberg
Vattenfall Hydropower AB has as contractor for Vattenfall Vattenkraft AB performed an investigation of the possibilities to make a detailed survey of the upstream slope of earth and rockfill embankment dams with modern echo sounding technology.
\u003Cp\u003EThis work includes a study of repeatability of measurement at two different occasions. The result of the investigation shows that it today is possible to make a detailed high resolution map even if the surface is rough. We have also established that the error in the repeatability between two different measurements was 0.5-1.0 % of actually depth. According to the supplier of the equipment there are possibilities to halve the error in future measurements.\u003C/p\u003E