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Eignung und Auswahl von Vortriebsverfahren für Druckstollen von Hochdruck‐Wasserkraftanlagen
Author(s) -
Gerstner Reinhold,
Vigl Alois,
Jäger Manfred,
Wilfinger Nicole
Publication year - 2019
Publication title -
geomechanics and tunnelling
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.317
H-Index - 18
eISSN - 1865-7389
pISSN - 1865-7362
DOI - 10.1002/geot.201900010
Subject(s) - dimensioning , hydropower , excavation , civil engineering , engineering , computer science , geotechnical engineering , aerospace engineering , electrical engineering
In the construction of high‐pressure hydropower plants, the headrace is often the decisive cost component and determines the economic feasibility of the plant. For this reason, the selection and dimensioning of the most suitable tunnelling method is of fundamental importance. This starts with the determination of a suitable layout followed by a reliable geological prediction and covers the geotechnical interpretation and identification of geotechnical requirements. This is followed by the most accurate forecast of the performance of different excavation systems and risk assessments for each estimate. Finally, the development and comparison of different construction process scenarios is required to determine the most practical and safest combination of the most suitable excavation methods. Subsequently, these individual steps are explained and a comparison is drawn with experience gained in construction practice in the implementation of numerous headraces of high‐pressure hydropower plants.