| 摘要 |
PROBLEM TO BE SOLVED: To provide a drainage structure capable of effectively removing both surface water and seepage water and excellent in workability, construction cost, drainage performance, and the like.SOLUTION: In a drainage structure of a slope ground, a main vein drain channel 2 in a slope longitudinal direction is installed in a slope 1, and a lateral vein pipe 3 partly exposed from a ground surface is connected to the main vein drain channel at a downgrade from a slope lateral direction. A water collection pipe 4 having water collection holes 4a is inserted into the ground and an end thereof is connected to the lateral vein pipe. A surface water collection port 8a capable of collecting water flowing down from the upper section of the slope is provided in the lateral vein pipe. Rainwater enters inside of the lateral vein pipe from the surface water collection port of the lateral vein pipe, seepage water is taken in by the water collection pipe and enters the lateral vein pipe, and all of them flows into the main vein drain channel, flows downward, and is discharged from the slope round. Both the surface water and the seepage water can be effectively discharged. Drainage of the seepage water is carried out by utilizing the lateral vein pipe and the main vein drain channel in common with surface water collection means. Therefore, the drainage is remarkably efficient, the workability is excellent, and the construction cost can be reduced. |
