Capping sand device and capping sand construction method

摘要

P To provide a device and a method for sand covering and which do not pollute an water area. PSOLUTION: Slurry prepared by mixing water and sand is discharged toward the bottom of water with a substantially horizontal flow. Water in the amount substantially equal to the amount of the discharged sand is suctioned from the vicinity of the discharge port and is used to make the slurry. PCOPYRIGHT: (C)2011 and JPO& INPIT