| 摘要 |
PROBLEM TO BE SOLVED: To provide a filling construction method capable of closely filling a filler in a horizontal hole grave cavity part. SOLUTION: This filling construction method of the horizontal hole grave cavity part injects, foams and fills field foaming hard polyurethane foam up to the height of a foaming styrene block of a first layer into a clearance formed of a wall surface of the horizontal hole grave cavity part and the foaming styrene block of an end part, by laying the foaming styrene block of the first layer all over, after sticking Japanese paper to a surface of the horizontal hole grave cavity part, and then, injects, foams and fills the field foaming hard polyurethane foam up to the height of a ceiling surface into a clearance formed of the ceiling surface of the horizontal hole grave cavity part and the foaming styrene block in a certain n-th stage being the uppermost stage, by repeating similar work up to the n-th stage. COPYRIGHT: (C)2008,JPO&INPIT
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