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Technical paper: Rehabilitation of Beaver Dam: a major seepage cut-off wall

DA Bruce & S Stefani. This paper was first published in GE’s June 1996 edition.

A major seepage cut-off wall has been installed through karstic rock at Beaver Dam, Arkansas. Given the geological, hydrological and logistical restraints, this curtain was formed by overlapping 864mm diameter concrete piles. Special equipment was needed for every phase of the work. Following the construction of the 19,300m2 cut-off, to depths of over 56m, the remnant seepage had been reduced by a factor of several hundred. This successful project was undertaken under a partnering agreement between the owner and the contractor. 

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