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Frontiers of Structural and Civil Engineering >> 2011, Volume 5, Issue 1 doi: 10.1007/s11709-010-0016-3

Influence of soft rock-fill material as dam embankment with central bituminous concrete membrane

Institute of Hydraulic Engineering and Water Resources Management, Vienna University of Technology, Vienna, Austria

Available online: 2011-03-05

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Abstract

This paper demonstrates the difficulties in determining the relevant material parameters for a valuation of the deformation behavior of the up- and downstream dam shell by means of an embankment dam of medium height. Laboratory as well as field tests on solid rock-fill material were performed before the beginning of construction. During the construction the properties of the available rock-fill changed from solid to soft materials. This gave rise to the necessity of adjusting the dam design of the downstream dam shoulder. Several times higher dam settlements as well as significant differential settlements between the up- and downstream dam shell were observed during construction and operation. Apart from this situation, the dam has been operated for nearly 20 years and the behavior of the water barrier has been very good.

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