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Underground openings filled with high-pressure water or air

Ouvertures Souterraines Soumises A De Fortes Pressions D’eau Ou D’air

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Bulletin of the International Association of Engineering Geology - Bulletin de l'Association Internationale de Géologie de l'Ingénieur Aims and scope Submit manuscript

Summary

A water pressure higher than 50 kp/cm2 and an air pressure higher than 40 kp/cm2 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.

Résumé

Dans des roches Précambriennes, une pression d’eau supérieure à 50 kp/cm2, et une pression d’air supérieure à 40 kp/cm2 sont utilisées pour le founctionnement de centrales hydroélectriques. Les conditions demandées sont analysées. En particulier la résistance à l’écartement des diaclases par l’eau et le problème des pertes en air est mentionnés. Quelques conseils pratiques pour la réalisation sont exposés.

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References

  • DANN H. E. — HARTWIG W. P. — HUNTER J. R. (1964): Unlined tunnels of the Snowy Mountains hydroelectric authority, Australia. — Journal of Power Division. Proceedings of the ASCE, 90, 1964.

  • GOUDMAN R. E. — TAYLOR R. L. — BREKKE T. L. (1968): A model for the mechanics of jointed rock. — Journal of the Soil Mechanics and Foundation Division. Proc. of the American Society of Civil Engineers, 94, Sm3.

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  • SELMER-OLSEN R. (1970): Experience with unlined pressure shafts in Norway. Proc. Int. Symposium On Large Permanent Underground Openings, Oslo 1969.

  • — (1973): Lukket fordelingsbasseng med luftpute. Report to: NVE-Statskraftverkene, Oslo, Norway 1973.

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  1. Geologisk Institutt Norges Tekniske Høgskole, Trondheim, Norge

    Selmer-Olsen R. (Professor)

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  1. Selmer-Olsen R.
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R., SO. Underground openings filled with high-pressure water or air. Bulletin of the International Association of Engineering Geology 9, 91–95 (1974). https://doi.org/10.1007/BF02635310

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  • DOI: https://doi.org/10.1007/BF02635310

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