http://repositorio.lnec.pt:8080/jspui/handle/123456789/45 DG Sat, 04 Apr 2026 21:09:14 GMT 2026-04-04T21:09:14Z http://repositorio.lnec.pt:8080/jspui/handle/123456789/1018859 Installation of Geosynthetics at the Cerro do Lobo Tailings Storage Facility Barroso, M. P.; Manso, J.; Brito, A.; Marcelino, J.; Galrão, R.; Oliveira, M. IGS-França The Cerro do Lobo Tailings Storage Facility is part of the Neves-Corvo Mine, located in Portugal. The mine is operated by Somincor, a Portuguese company and a subsidiary of Lundin Mining Corporation. The mine has been in operation since 1988 and processes copper and zinc with an annual capacity of 2.8 million tonnes and 2.5 million tonnes, respectively. The facility consists of a zoned rockfill tailings dam. The tailings storage area was recently expanded by approximately 10%. This expansion involved the construction of a new embankment in the southern area of the tailings facility. Technical assistance for the design and construction of the new southern embankment was provided by an independent and impartial research and development institute. The embankment incorporates a liner system with geosynthetic barriers. The use of geosynthetic barriers presented several challenges during both the design and construction phases. This paper discusses the main challenges faced during the construction of the liner system, mainly related to the installation of the geosynthetics. Mon, 15 Sep 2025 00:00:00 GMT http://repositorio.lnec.pt:8080/jspui/handle/123456789/1018859 2025-09-15T00:00:00Z http://repositorio.lnec.pt:8080/jspui/handle/123456789/1018821 Characterisation and diagnosis of timber floor of the Ajuda National Palace in Lisbon Fontul, S.; Mota, R.; Pereira, M. M.; Cruz, H.; Matias, L.; Duarte, S.; Mera Marques, A. This paper presents a case study of Ground Penetrating Radar (GPR) application for multidisciplinary diagnostic of timber floor of Ajuda National Palace (ANP), which was the official royal house in the second half of the 19th century. Several inspection and diagnostic techniques were used in order to detect a possible termite infestation of the wood of floors and walls. The results obtained confirmed the potential of using GPR, thermography and a multidisciplinary approach to characterising and diagnosing heritage structures. Main results and recommendations are presented herein. Tue, 01 Jul 2025 00:00:00 GMT http://repositorio.lnec.pt:8080/jspui/handle/123456789/1018821 2025-07-01T00:00:00Z http://repositorio.lnec.pt:8080/jspui/handle/123456789/1018820 Construction of the Southern Expansion of the Cerro do Lobo Waste Facility Manso, J.; Brito, A.; Barroso, M. P.; Marcelino, J.; Galrão, R.; Oliveira, M. Carlos Pina; Eliane Portela; Laura Caldeira Neves-Corvo is a copper-zinc mine producing copper, zinc and lead concentrates. The mine is owned and operated by Lundin Mining's Portuguese subsidiary SOMINCOR. Lundin Mining acquired Neves-Corvo through the merger with EuroZinc Mining in 2006. It is located in the Alentejo district of southern Portugal. The ore is processed on site and the tailings are deposited at the Cerro do Lobo Waste Facility. During the operational phase, the mining waste will be deposited vertically, in stages, from the current five levels to thirteen levels (with an average slope of 5 %). In order to accommodate this process, it has been necessary to expand this infrastructure, including the southern expansion of the tailings dam. The dam will contain waste up to level 8 (at an elevation of 272 m), with a maximum height of 17 m, and walls with slopes of 1(V):2.5(H) upstream, allowing the use of geosynthetics, and 1(V):2(H) downstream. Apart from of the left abutment, the dam’s foundation was constructed on the natural terrain. The dam’s lining system consists of a transition layer, composed of a sandy material, a geosynthetic clay liner and a high-density polyethylene (HDPE) geomembrane. This paper provides a detailed description of the methodology employed in the dam’s construction, with particular emphasis on the use of soil-rockfill mixtures as the primary building material. It also outlines the specific techniques employed to ensure the quality and durability of the construction. Wed, 16 Apr 2025 00:00:00 GMT http://repositorio.lnec.pt:8080/jspui/handle/123456789/1018820 2025-04-16T00:00:00Z http://repositorio.lnec.pt:8080/jspui/handle/123456789/1018818 Installation of geosynthetics at the Cerro do Lobo Tailings Storage Facility Barroso, M. P.; Manso, J.; Brito, A.; Marcelino, J.; Galrão, R.; Oliveira, M. The Cerro do Lobo Tailings Storage Facility is part of the Neves-Corvo Mine, located in Portugal. The mine is operated by Somincor, a Portuguese company and a subsidiary of Lundin Mining Corporation. The mine has been in operation since 1988 and processes copper and zinc with an annual capacity of 2.8 million tonnes and 2.5 million tonnes, respectively. The facility consists of a zoned rockfill tailings dam. The tailings storage area was recently expanded by approximately 10%. This expansion involved the construction of a new embankment in the southern area of the tailings facility. Technical assistance for the design and construction of the new southern embankment was provided by an independent and impartial research and development institute. The embankment incorporates a liner system with geosynthetic barriers. The use of geosynthetic barriers presented several challenges during both the design and construction phases. This paper discusses the main challenges faced during the construction of the liner system, mainly related to the installation of the geosynthetics. Thu, 18 Sep 2025 00:00:00 GMT http://repositorio.lnec.pt:8080/jspui/handle/123456789/1018818 2025-09-18T00:00:00Z