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美国丰特纳尔(Fontenelle)坝位于怀俄明州的西南部,是一座高43.4m,长1,652m的土坝,库容4.26亿m~3,隶属于垦务局,自从1965年建成以来就成为该局的一个疑难问题。1965年6月水库蓄水,几乎随即就发现西岸坡漏水。3个月后就发展到5,236L/S,把下游坝面的填筑冲蚀掉7,650m~3。经迅速泄放水库蓄水,保住了坝的安全。据认为,问题在于砂岩岸坡里夹有薄层石膏和石灰岩,通过岸坡的渗流溶解了石膏,助长了渗漏。
The Fontenelle dam, located in the southwestern part of Wyoming, is a 43.4m high and 1,652m long earth dam with a storage capacity of 426 million m 3 under the Reclamation Bureau and since 1965 it became the Bureau of a difficult problem. In June 1965, the reservoir was filled with water, and water leakage on the West Bank was discovered almost immediately. After 3 months it developed to 5,236L / S, filling the downstream dam surface erosion 7,650m ~ 3. The rapid discharge of reservoir water, to keep the safety of the dam. The problem is believed to be the thin gypsum and limestone sandwiched between the sand banks and the seepage through the slope dissolving gypsum.