| 摘要 |
PURPOSE:To perform uniform water-holding and draining work of sloped ground by a method in which a water-impermeable sheet is laid on the excavated subgrade, partition plates are erectly provided along a contour line, a water collecting tube is set on the lower end of the partition plates, and a non-woven cloth is erectly provided perpendicular to the partition plates. CONSTITUTION:In a golf course, etc., excavation is made by a depth D form the ground surface H or the green face, and the subgrade B is graded. Plural partition plates 1 are erectly set in a tiered form along a contour line on the subgrade B, and a water-impermeable sheet 2 is laid on the whole surface of the subgrade B. A water collecting tube 3 is provided on the sheet 2 on the higher side of each partition plate and large numbers of a non-woven cloths 7 are erectly provided in the perpendicular direction to the partition plates 1. Sand 8 as a solid delivered is laid on the sheet 2 and surface soil 9 for vegetation is laid on the sand 8. Water can thus permeate uniformly by the capillary phenomenon of the non-woven cloths and thereby the water-holding and draining work can be uniformly controlled. |
