| 摘要 |
<p>PURPOSE:To facilitate uniform compaction by providing a refilling carriage at the bottom of a burying open groove to automatically perform compaction of refilled soil which is guided near the pipe bottom via a slope guide. CONSTITUTION:An underground buried pipe 2 is arranged at the center in a cross direction Y of a burying open groove 9. Next, a refilling carriage l is provided at the bottom 9a of the burying open groove 9 to connect hydraulic pipes for a rammer 6, a mobile catapillar 7... to a pressure source on the ground. When the rammer 6 is actuated and at the same time refilled soil 10 is thrown into the burying open groove 9, the refilled soil 10 is pushed into the underground buried pipe 2 side with the forward and backward movement of the rammer 6 to perform compaction. The mobile catapillar 7... are actuated to move the refilling carriage l to the axial center X of the underground buried pipe 2 and stop the same at an adjacent position adequate for compaction, where compaction of the refilled soil 10 is then performed likewise.</p> |
