Patent ID: 6612779
Filing Date: 2003-09-02
Classification: E02B,E02D

Abstract:
A method of waterproofing a dam during construction of the dam, where the dam has a longitudinal axis, an embankment body of superimposed layers of earth and/or rocks, a waterproofing geomembrane, and at least one transition zone of fine loose materials that develop from a bottom to a top of the embankment body and along the longitudinal axis of the dam, the method comprising the steps of:disposing the transition zone on at least a downstream side of the geomembrane; partially embedding and securing anchoring strips into at least one of the transition zone and the embankment body; gradually extending the geomembrane on the transition zone during construction of the dam; and anchoring the geomembrane to the transition zone by heat-welding the geomembrane to the anchoring strips.