暗渠排水的目的是把耕地的地下水位降低至适当的深度。也就是通常对其进行组织计划,排出土壤中过剩的水,促进土壤的物理性质适应农作物的生育,并使土壤的耐压力适应农业机械的运行。为此,研究地下排水量和暗渠的配套方式、深度、间距、坡度、流速的设计及暗渠的设置、施工、维修管理是非常必要的。 The purpose of culvert drainage is to reduce the groundwater level of the cultivated land to the appropriate depth. That is, it is usually organized and planned to discharge excess water in the soil, promote the physical properties of the soil to adapt to the growth of the crop, and adapt the pressure of the soil to the operation of agricultural machinery. For this reason, it is necessary to study the supporting methods, depth, spacing, slope, and velocity of underground drainage and culverts, as well as the design, construction and maintenance management of underdrain.