| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a bank protection retaining wall structure A1 capable of surely preventing the stability of the entire backfill material from being damaged by using the backfill material capable of evading the generation of buoyancy by the rise of a water level even while it is a lightweight banking material. <P>SOLUTION: The backfill material on the back surface of a bank protection retaining wall 1 includes: a lower backfill layer 3 by earth and sand or the like; a laminated structure layer 4 comprising a resin material having gaps through which underground water can infiltrate; and an upper backfill layer 5 by earth and sand or the like. <P>COPYRIGHT: (C)2012,JPO&INPIT |
