Sep 04, 2026
The main purpose of a gold mining heap leach pad is to control the movement of process solution and direct it into the collection system while minimizing seepage into the underlying ground. In this process, containment, protection and drainage are closely connected. HDPE geomembrane, geotextile and geocomposite drainage net perform different functions, but they need to work together as one engineered system.
As process solution moves downward through the ore heap, the HDPE geomembrane provides the primary seepage barrier and limits downward migration into the subgrade. Where required by the liner design: Geotextile is installed to protect the geomembrane from mechanical damage caused by the subgrade, construction activities or loading: The geocomposite drainage net provides a draina...
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