| 摘要 |
PURPOSE:To complete drainage in a short time by eliminating the needs for burden of banking soil by a method in which many columns of a high-water absorptive high molecular material are erected in the weak and viscous ground in such a way as to cause the columns to swell by water absorption of the viscous soil among them. CONSTITUTION:Many column holes 2 are provided at intervals in the weak and viscous ground 1, and filled with a high water absorptive high molecular material 3, together with the surface soil 6 as needed. Since the high molecular material 3 (e.g., polyvinyl alcohol, polyethylene oxide, etc.) has high water absorbability, the water in the viscous soil 5 among the columns 4 is absorbed by the material 3 and the surrounding viscous soil 5 is compressed by the swelling of the material 3 itself. The water in the soil 5 can thus be squeezed out to enable the material 3 to absorb more water. |
