明渠均匀流流量计算公式

渠道名称底宽b水深h边坡系数m断面面积A糙率n比降im2电站尾水段202.31.0051.290.0250.0011m=△B/h0.0225Q＜1m3/s1＜Q＜25m3/sQ＞25m3/s0.01500.01700.02500.0275~0.03卵石铺砌                       0.0250渠道糙率n参考值明渠均匀流流量计算公式(梯形断面)0.01500.01500.02500.03000.03300.035~0.0450.01200.0140渠道特征                      糙率n值  0.02000.0225砌砖护面                        粗糙的混凝土护面                  0.02250.02500.02750.0250浆砌块石护面                    干砌块石护面                    岩石经过良好修整               经过中等修整无凸出部分              经过中等修整有凸出部分             未经修整有凸出部分                 各种材料护面抹光的水泥抹面           不抹光的水泥抹面                   光滑的混凝土护面                  料石砌护                        0.0300平整顺直,养护良好              平整顺直,养护一般              渠床多石,杂草丛生,养护较差        平整顺直,养护良好              平整顺直,养护一般             渠床多石,杂草丛生,养护较差        毛渠                       支渠以下的固定渠道，渠床弯曲，养护一般  湿周χ水力半径R流量Q流速V谢才系数C校核流量26.505381.935100.7451.96444.65222100.00原始数据常数过程数据计算结果明渠均匀流流量计算公式(梯形断面)渠道名称底宽b水深h边坡系数m断面面积A糙率n比降im2湿周χ五支渠201.90.00380.0250.0027023.8干砌块石护面                    0.0275~0.03卵石铺砌                       0.0225明渠均匀流流量计算公式(矩形断面)砌砖护面                        0.0150粗糙的混凝土护面                  0.0170经过中等修整有凸出部分             各种材料护面抹光的水泥抹面           浆砌块石护面                    0.0250不抹光的水泥抹面                   0.0140光滑的混凝土护面                  0.0150料石砌护                        0.01500.0120支渠以下的固定渠道，渠床弯曲，养护一般  0.0300岩石经过良好修整               0.0250经过中等修整无凸出部分              0.03000.0330未经修整有凸出部分                 0.035~0.045平整顺直,养护一般             0.0250渠床多石,杂草丛生,养护较差        0.0275流量小于1m3s-1  毛渠                       0.0250平整顺直,养护一般              0.0225渠床多石,杂草丛生,养护较差        0.0250流量1～25m3s-1  平整顺直,养护良好              0.0225平整顺直,养护良好              0.0200渠道糙率n参考值渠道特征                      糙率n值  土质流量大于25m3s-1  水利半径R流量Q流速V谢才系数C1.597107.8942.83943.24419原始数据常数过程数据计算结果明渠均匀流流量计算公式(矩形断面)桩号长度高程高差比降高差2.71长度1000370.37比降0.00270.0027原始数据常数过程数据计算结果40501411011408600390933.392.03538.08541.47536.050.0026990.0024080.003383