myGeobrugg
Zastosowane systemy
Rok Instalacji / montazu
2014
Opis sytuacyjny projektu
During construction of the headrace tunnel in July 2012 for a hydro power plant some severe rockburst occured. The high internal stress in the rock and overburden over 1000 m on top of the tunnel as well as the brittle metamophic character with a rock mass rating RMR › 65 caused some severe problems during the project.
Opis zastosowanego rozwiazania
The tunnel was divided in sectors to analyse the stress level in regard to the high stress classification whereas it shows that some rockbursts of level 2 and 3 occured. In the most critical zone a support system with MINAX® 80/4 was applied in combination with mechanized installation thanks to Geobrugg's MESHA® handler. The installation time had been decreased between 20 to 25% and safety for workes was significantly improved.
Kraj / region
Peru
Inwestor
-
Chroniony Objekt
Other
Ochrona przeciwerozyjna
GEOBRUGG SUPERCOATING
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