Being last capping structure

摘要

PROBLEM TO BE SOLVED: To use a highly versatile material without needing special labor for its construction.;SOLUTION: Protective sheets 4 formed of nonwoven fabric, irregular sheets 5 made of synthetic resin having given holes 50 and separation sheets 7 formed of nonwoven fabric are laid on flattened surface of waste 2 in order, to have a water permeation factor of the three-layered body of 1×10^-2 to 1×10 cm/sec, and water permeation performance of 1×10^-1 cm²/sec or more, and soil covering 8 is provided thereon.;COPYRIGHT: (C)2005,JPO&NCIPI