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Underground openings filled with high-pressure water or air

R., Selmer-Olsen

Summary A water pressure higher than 50 kp/$ cm^{2} $ and an air pressure higher than 40 kp/$ cm^{2} $ have been used in the unlined tunnel and closed surge chamber of a hydroelectric power plant in Precambrian rock. The rock conditions demanded are discussed. In particular the resistance to hydraulic fracturing, but also the leakage problem through the rock mass, is mentioned. Some practical advice for the design is put forward.

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Underground openings filled with high-pressure water or air

R., Selmer-Olsen

Summary A water pressure higher than 50 kp/$ cm^{2} $ and an air pressure higher than 40 kp/$ cm^{2} $ have been used in the unlined tunnel and closed surge chamber of a hydroelectric power plant in Precambrian rock. The rock conditions demanded are discussed. In particular the resistance to hydraulic fracturing, but also the leakage problem through the rock mass, is mentioned. Some practical advice for the design is put forward.

Underground openings filled with high-pressure water or air

R., Selmer-Olsen

Summary A water pressure higher than 50 kp/$ cm^{2} $ and an air pressure higher than 40 kp/$ cm^{2} $ have been used in the unlined tunnel and closed surge chamber of a hydroelectric power plant in Precambrian rock. The rock conditions demanded are discussed. In particular the resistance to hydraulic fracturing, but also the leakage problem through the rock mass, is mentioned. Some practical advice for the design is put forward.

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Title:

Underground openings filled with high-pressure water or air

Contributors:

R., Selmer-Olsen (author)

Published in:

Bulletin of the International Association of Engineering Geology - Bulletin de l'Association Internationale de Géologie de l'Ingénieur ; 9

Publication date:

1974

ISSN:

DOI:

https://doi.org/10.1007/BF02635310

Type of media:

Article (Journal)

Type of material:

Print

Language:

English

Keywords:

Hydraulic Fracture , Valley Side , Rock Burst , Headrace Tunnel , Hydroelectric Power Plant

Classification:

BKL: 38.58 Geomechanik / 56.20 Ingenieurgeologie, Bodenmechanik
Local classification TIB: 050/6545

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