Abstract

This paper proposes the construction of steel pipe sheet pile (SPSP) cutoff walls for promoting remediation of water-soluble toxic substances and containment of water-soluble toxic substances at landfill sites in order to maintain and ensure the environmental safety of waste landfill sites over time. It investigates environmental safety at coastal waste landfill sites by applying water cut-off and remediation promotion techniques to the joint sections of SPSP water cut-off walls that provide shore protection for waste landfills. Results from the research herein show that the construction of SPSP water cut-off walls with features such as the containment of water-soluble toxic substances and remediation promotion is possible by applying water cut-off and remediation techniques to H–H joints, which are structural joint components of SPSP walls. In addition, they show that the performance of remediation in H–H joints can be controlled by adjusting the water cut-off efficiency of the H–H joint flange.

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