| 摘要 |
PROBLEM TO BE SOLVED: To provide a soil improving method which is applicable to a soft ground under the water surface, carried out on a stable scaffolding without an influence of meteorological conditions, tide level, wave force, or the like, and makes effective use of floating matter generated in bulk at the time of soil improvement. SOLUTION: The soil improving method is comprised of the following steps. In the first step, a container structure (e.g. a caisson 1) is set on the ground (G) under the water surface, and vertical boring is carried out in an area below the container structure (1) on the ground (G) under the water surface, by using soil improving devices (4, 5), followed by inserting a hardener jetting means (7) from the soil improving devices (4, 5). In the following step, the hardener jetting means (7) functions to horizontally jet a hardener while being rotated, and then the hardener jetting means (7) is drawn upward to thereby carry out the soil improvement. According to the soil improving method, waste matter (e.g. slime S) which is a mixture of the hardener and the soil of the ground (G) under the water surface generated during execution of the hardener jetting step, is housed in the container structure (1). COPYRIGHT: (C)2004,JPO&NCIPI
|
