已知:设计管段长L=150m,地面坡度i=0.0036,设计流量Q=29L/s,上游管管口径250mm,充满度和h／D＝0.6,管底高程44.65m,地面高程46.60m,问:所选管径和管底末端高程为(上下游管道采用水面平接)_______mm,________mm. A:400,45.22 B:300,46.10 C:400,46.10 D:300,44.27 答案:D
A:400,45.22
B:300,46.10
C:400,46.10
D:300,44.27
答案:D
已知:设计管段长L=150m,地面坡度i=0.0036,设计流量Q=29L/s,上游管管口径250mm,充满度和h／D＝0.6,管底高程44.65m,地面高程46.60m,问:所选管径和管底末端高程为(上下游管道采用水面平接)_______mm,________mm. A:400,45.22 B:300,46.10 C:400,46.10 D:300,44.27 答案:D
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