我们在室外排水工程中,用水平滑模法施工排水沟,效果很好。排水沟的截面见图1。起点深度300毫米,3‰的排水坡度,最深点达900毫米。当沟深在500毫米以内时,沟壁厚度为100毫米,沟深大于500毫米时为200毫 In the outdoor drainage project, we use the water smoothing method to construct the drainage ditch, which works well. The cross section of the drain is shown in Figure 1. The starting point has a depth of 300 mm and a drainage gradient of 3 inches. The deepest point is 900 mm. When the groove depth is within 500 mm, the groove wall thickness is 100 mm, and when the groove depth is greater than 500 mm, it is 200 millimeters.