Water reservoirs on Madeira Island: (essential) waterproofing with geosynthetics
DOI:
https://doi.org/10.14195/2184-8394_extra2024_1_2Keywords:
dam, reservoir, volcanic formations, lining system, geosyntheticsAbstract
The island of Madeira has several water reservoirs for different purposes, including the Pico da Urze and Portela dams. A common feature of these infrastructures is that the characteristics of the volcanic geological formations and the materials used in the construction of the dams do not guarantee the necessary waterproofing, making the use of geosynthetics in lining systems essential. A geocomposite (PVC geomembrane thermally coupled to a geotextile) was used in the Pico da Urze dam and a PEAD geomembrane in the Portela dam. The use of these materials presented some challenges in terms of the design and construction of their lining systems. This paper presents the main challenges faced during the design and construction of the lining systems, which were supported by the Laboratório Nacional de Engenharia Civil as part of the technical assistance provided to the dam owners.
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References
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