| Autor: |
H. Armbruster, W. Mazur, G. P. Merkler, J. Brauns |
| Rok vydání: |
2005 |
| Předmět: |
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| Zdroj: |
Detection of Subsurface Flow Phenomena ISBN: 3540518754 |
| DOI: |
10.1007/bfb0011627 |
| Popis: |
A research project was carried out over a period of 3.5 years, dealing with the hydraulics of leaks in dam seals and with geophysical methods to detect and to localize these leaks. The main object of the investigations was a large model dam (H=3.5 m, L=20 m, V=600 m3) in a huge open pit which was sealed with HDPE plates to form a watertight basin and an "impervious base" of the dam. The dam body was made of sand and had an upstream sealing face which was constructed with a number of artifical leaks to be operated under full reservoir conditions. The instrumentation of the dam body consisted of a number of piezometer and temperature gauges for observing the seepage processes and the related temperature changes. A net of self-potential electrodes was installed in the downstream face of the dam which were observed along with the numerous tests performed under varying conditions. A thermo-camera was also installed and was used to observe the infrared thermo-reflection of the downstream face of the dam during the leakage tests. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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