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Keywords: air cushion surge chamber
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Proceedings Papers

Paper presented at the ISRM International Symposium, September 12–16, 1988
Paper Number: ISRM-IS-1988-021
... ABSTRACT: For some hydropower stations having a wide range of tailwater level, there will be many advantages if a small tailrace air cushion surge chamber is used to take the place of the conventional surge chamber. Generally, it can improve the stability of surrounding rock mass of openings...
Proceedings Papers

Paper presented at the ISRM International Symposium, May 26–28, 1982
Paper Number: ISRM-IS-1982-098
... SUMMARY: The air leaking out of air-cushion surge chambers has to be compensated for by stationary compressors. To predict the air loss, the Norwegian Geotechnical Institute has utilized a method developed by Tokheim and Janbu (1973). The paper presents calculations and measurements made...
Proceedings Papers

Paper presented at the ISRM International Symposium, May 26–28, 1982
Paper Number: ISRM-IS-1982-094
... of compressed air, as indicated in Fig. 1. The air bubble or cushion functions as shock absorber to ensure hydraulic stability of the system. In 1973 and 1974, the world''s two first high pressure air cushion surge chambers were successfully put into operation, at the Driva and Jukla power plants in Norway...

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