草皮水道的设计比混凝土或其他稳定材料衬砌渠道的设计复杂,因为其糙率系数随水流深度、植物生长阶段、水力半径和流速而变化。 1 草皮水道的用途坡地径流通过不致形成冲沟的控制手段而流向低洼地。任何情况下,顺坡而下的径流所产生的大量能量都会被消耗。1.4m~3/s的径流沿着5％的坡度下降30 m,可 The design of the turf waterway is more complicated than the design of the concrete or other stabilizing material lining canal because its roughness coefficient varies with water depth, plant growth stage, hydraulic radius and flow rate. Use of a turf waterway Slope runoff flows into low-lying areas through controls that do not cause gullys. In any case, much of the energy generated by downslope runoff is consumed. 1.4m ~ 3 / s runoff along the 5% slope down 30 m, can