Anhydrite Dissolution Phenomena: Three Case Histories of Anhydrite Karst Caused by Water Tunnel Operation |
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| Authors: | M Gysel |
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| Institution: | (1) Gysel & Preisig, Baden, Switzerland, CH |
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| Abstract: | Summary
Dissolution (karstification) of anhydrite/gypsum due to water tunnel operation of hydroelectric schemes has been experienced
sporadically in the past. Two cases which occurred in Switzerland and a very severe damage concerning the Chixoy power tunnel
in Guatemala are treated in the paper. In conclusion, it is shown which combinations of geological and hydraulic conditions
may lead to major dissolutions and therefore to great tunnel damage. |
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