农田水利工程灌区滴灌计算(玉米)教学文案

2024年2月22日发(作者：)

项多孔管(毛管)平坡多孔管支管(90薄壁管)顺坡多孔管支管(90薄壁管)逆坡项目s(单孔间距m)0.41.11.1管道编号OAABBCCDDEAA'管长m6011561Q(管流量L/h)流量2253015015750管径计算值d267.0238.8206.8168.9119.484.4干管分干管滴头工作压力（m）毛管水头损失(m)支管水头损失(m)干管水头损失（m）过滤器水头损失(m)地形高差(m)水泵管总水头损失动水位（m）水泵扬程3830030150

水损计算表qd单孔流量(L/h)d(管径mm)N(多孔数)多孔系数沿程水损(m)总水损(m)1.5161500.3670.2770.30545086.8670.3710.9201.01245086.8350.3780.1600.175选择管径d选D(内径mm)L(管长m)沿程水损(m)总水损(m)流速(m/s)315297.4610.230.251.21250232.41761.421.561.58225207.41761.471.611.49225207.41760.720.790.992001841760.370.410.631101037257.147.861.01100.3050.17512.488-83127.028.5KQW150/370-30/43826209M3/S1234510.4823.42

oABCDE