In general, the seepage and drainage method is adopted, and the underground seepage system is closely related to the site structure, and the form of blind ditch is mostly adopted. The drainage slope of the outdoor site of the foundation of the artificial turf should be controlled within the range of 0.3%~0.8%, the slope of the artificial turf site (without water seepage function) is not more than 0.8%, and the slope (with water seepage function) is 0.3%. The drainage ditch of the outdoor site shall not be less than 400mm.

First, the water and rapids groove must be made of slurry masonry structure, the height of the steps can be determined according to the terrain, geology and other conditions, the height of the multi-step steps can be different, the ratio of height to length should be adapted to the slope of the original ground, the height of the steps should generally not be 0.5~0.6m, usually 0.3~0.4m.

Second, the water can be poured with slurry stone or cement concrete, the thickness of the side wall of the trench wall and the dissipation pool: the slurry stone is 0.25~0.4m, the concrete is 0.2m, the height should be at least 0.2m higher than the calculated water level, the thickness of the bottom of the groove is 0.25~0.4m, and the outlet is provided with a water barrier.