| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To reduce the amount of earth and sand to be excavated and to greatly reduce execution time when burying a pipe into the ground by an open-cut method, and further to surely prevent the subsidence of the ground surface after backfill. <P>SOLUTION: After an excavation groove 2 for burying the pipe 1 is excavated by an extremely small width having a margin of a maximum of 10cm to the left and right to a diameter D of the pipe 1 to be buried and then the pipe 1 is arranged in the excavation groove 2, slurry-like fluidized soil 5, where water, earth and sand, and a setting agent are mixed at a position without exceeding the 1/2 of the diameter of the pipe 1, thus immediately throwing the earth and sand 6 to the upper portion of the fluidized soil for rolling. <P>COPYRIGHT: (C)2004,JPO</p> |
