Роберт Дэнис

Вице-президент по инженерным разработкам, Solmax

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Господин Дэнис является дипломированным инженером с высшим техническим и химическим образованием. В течение последних 30 лет он работал в геосинтетической промышленности. Является основателем и президентом Международной ассоциации монтажников геосинтетических материалов. Господин Дэнис - хорошо известный специалист в данной отрасли, является автором более 100 научных работ. В настоящее время он работает вице-президентом по инженерным разработкам в компании Solmax, ведущем производителе полиэтиленовых геомембран в мире.


Linear Low Density Polyethylene Geomembranes in Mining Applications

Mineral processing from mining activities is an industrial sector that is especially environmentally sensitive on account of the large volumes and nature of the mineral elements and compounds, as well as their processing agents used for metallurgical extraction such as hydrometallurgy (heap leaching). For similar reasons, disposal of mine tailings is furthermore one of the most important environmental issues during both active and post-closure mine phases. To that effect, sound engineering designs must prevent downstream surface run-off of contaminants as well as their percolating migration towards the underlying water tables through the use of efficient and long lasting hydraulic barriers. Geomembranes are impervious sheets of polymeric material primarily used to reduce the hydraulic conductivity of in situ soils. They represent a branch of engineering materials called geosynthetics which are specifically designed to enhance the technical properties of natural soils which have been deemed deficient from an engineering point of view. Geomembranes are thus extensively used to provide long term additional imperviousness to natural soils. This paper specifically addresses the use of Linear Low Density Polyethylene geomembranes (LLDPE) for mining applications all too often associated with extremely harsh environmental conditions including permafrost, rugged subgrades, substantial overburdens, highly corrosive compounds and solutions, low-level radioactivity and correlated site installation concerns such as stress-cracking.