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Author(s):	Schorn, Roland; Rieder, Christian; Hager, Andreas
Title:
Abstract:	Construction of the Verbund project Limberg III pumped storage power station is currently underway in the area of the Kaprun/Salzach power station group. Preliminary work started on 6 April 2021, the main construction work started on 7 January 2022 and the overall facility is scheduled to be commissioned the end of 2025. Kaprun has a long history in the construction of power stations. The Kaprun storage power stations in the 1950s were an outstanding engineering feat and is symbolic of the reconstruction efforts that took place in Austria in the wake of World War II. The power station facilities at the main and upper stage have been in existence since the 1950s and have since been continuously expanded. From 2006 to 2011 the all-year-round reservoirs Mooserboden and Wasserfallboden were extended to include the Limberg II pumped storage station. The group is currently expanding the Kaprun/Salzach power station group by building the Limberg III pumped storage station, for which the same design as Limberg II has been adopted for implementation purposes. In addition to the significant logistical challenges posed by the high mountain location of the construction site, this report also covers the tunnelling systems. Das Verbund Projekt Pumpspeicherwerk Limberg III wird aktuell im Bereich der Kraftwerksgruppe Kaprun/Salzach realisiert. Die Vorarbeiten haben am 6. April 2021 begonnen, die Hauptbauarbeiten befinden sich seit 7. Januar 2022 in Bau, die Inbetriebsetzung der Gesamtanlage ist Ende 2025 geplant. Kaprun hat eine lange Geschichte im Kraftwerksbau. Die Errichtung der Speicherkraftwerke Kaprun in den 1950er-Jahren zählen zu den herausragenden Ingenieurleistungen und sind ein Symbol für den Wiederaufbau Österreichs nach dem Zweiten Weltkrieg. Die seit den 1950er-Jahren bestehenden Kraftwerksanlagen der Haupt- und Oberstufe wurden in der Folge ständig erweitert. In den Jahren 2006 bis 2011 wurden die Jahresspeicher Mooserboden und Wasserfallboden um das Pumpspeicherwerk Limberg II erweitert. Aktuell erweitert Verbund die Kraftwerksgruppe Kaprun/Salzach um das Pumpspeicherwerk Limberg III, das bauartgleich zu Limberg II realisiert wird. Neben den schwierigen logistischen Herausforderungen dieser Hochgebirgsbaustelle wird im Bericht auf die Vortriebssysteme eingegangen.
Source:	Geomechanics and Tunnelling 15 (2022), No. 5
Page/s:	478-490
Language of Publication:	English/German

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