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Long-term dam safety monitoring of Punt dal Gall arch dam in Switzerland

Frontiers of Structural and Civil Engineering 2012年第1期6卷 76-83页

作者： M.WIELAND G.F.KIRCHEN Poyry Energy Ltd. Hardturmstrasse 161Zurich CH-8037Switzerland Engadiner Kraftwerke AG Zernez CH-7530Switzerland

The 130m high Punt dal Gall dam is located at the Swiss-Italian border in the South-eastern part of Switzerland and was completed in *** dam is founded on highly folded and partially crushed dolomite and limestone formations.A grout curtain with an area of 120,000m^(2) was provided for controlling *** the monitoring of the dam deformations five inverted pendulums were installed in the dam and three in the rock foundation of the right abutment outside of the *** a seasonal water level fluctuation in the reservoir of about 60 m the maximum amplitude of the radial displacement is 25 mm,which includes both the effects of the water load and temperature *** a comprehensive geodetic network was established,57 joint meters were installed and cracks in the crest gallery are monitored by crack *** are also thermometers,piczometers and *** at the left and fight banks of the dam are monitored and chemical analyses of the seepage water and springs are performed *** dam is equipped with strong motion instruments and several near-field earthquakes have been recorded in the *** paper describes the long-term safety monitoring of this 42 years old arch dam.A short description of the Swiss practice in dam safety monitoring and emergency planning is also given.

关键词： dam safety concept arch dam dam instrumentation dam safety monitoring

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