| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To easily and efficiently pack the soil for back-filling into a clearance between buried pipes. <P>SOLUTION: Two water spray members 3 respectively provided with a water spray port 11 at its lower end part, are suspended down in parallel from a tip of a bucket arm 1 of a self-propelled excavator, and the water is sprayed to the soil for back-filling charged in a groove 6 to provide the soil with the fluidity by the water, whereby the soil is naturally and efficiently packed in the clearance between the buried pipes 8. <P>COPYRIGHT: (C)2004,JPO&NCIPI</p> |
