Multiple functions in landfill capping system, case study from feasibility until execution

• Published in: Geosynthetics: Leading the Way to a Resilient Planet pp. 1988 - 1992
• Main Authors: Márton, C., Kádár, I., Tamaro, E.
• Format: Book Chapter
• Language: English
• Published: CRC Press 2024
• Edition: 1
• DOI: 10.1201/9781003386889-266

A smart solution for covering waste storage facilities is described. It allows vegetated covers for full environmental integration while optimizing the storage volume of the landfill for a given footprint by allowing slope angles up to 2/3, depending on the shear strength of the cover soil. The design process is described for the reinforcement and drainage functions that the geocomposite solution ensures. The case study illustrates the importance of the design of the anchorages required by this application. Of the civil infrastructure sectors, the environmental sector is the one which is growing the fastest as we seek to address the multiple issues posed by man-made pollution and population growth. Landfill industry needs to keep increasing both in terms of its capacity and its ability to safely dispose of the remaining waste and ensure that the existing landfill remain safe. Within two years of the end of the operation phase of a landfill, a permanent capping has to be implemented to prevent penetration of uncontrolled water in waste and biogas emission into the atmosphere which would increase the carbon footprint of the landfill. Multi-level shearing resistances have to be checked or considered in the design of the geocomposite. Internal stability of the veneer soil layer is a first condition, its external stability is the next step, it depends on the friction angle between soil and the top layer of the basal multi-layered geosynthetic system.