梯形、矩形渠道水力计算

梯形渠道断面尺寸、水深计算

水深底宽边坡过水面积湿周水力半径糙率谢才系数坡比降流速流量h(m)b(m)m A(m*m)χ(m)R(m)n C(m^1/2/s)I v(m/s)Q(m^3/s) 0.400.30 1.000.280 1.4310.1960.025030.4760.01 1.3480.377 0.64 1.000.410 1.8100.2260.022534.6940.000250.2610.107

0.600.600.500.540 1.9420.2780.012067.3270.03 6.150 3.321 0.400.500.500.280 1.3940.2010.018042.5130.03 3.3000.924 0.600.320.400.336 1.6120.2080.012064.1640.03 5.073 1.705 0.750.80 1.00 1.157 2.9150.3970.02534.2920.01 2.1607 2.5004

说明：1、计算的范围为尾水（即尾0+000~尾0+017.5）。

2、计算时假设该渠水流为明渠均匀流进行水力计算。

3、该渠道的衬砌为浆砌块石衬砌，其糙率n值取为n=0.025。

水 深过水面积湿 周水力半径糙 率谢才系数底坡比降流 速流 量

h(m)A(m*m)χ(m)R(m)n C(m^1/2/s)I v(m/s)Q(m^3/s)0.6700 1.608 3.740.42994650.022538.6117860.00120.8770 1.41030.40000.16 1.20.13333330.01259.5628140.03 3.76710.6027.0#VALUE!#VALUE!0.014#VALUE!0.0012#######VALUE!0.80000.56 2.30.24347830.01843.9006410.01 2.1662 1.21311.3800 2.208 4.360.5064220.02535.7118290.002 1.1365 2.50950.30000.090.90.10.01256.7743390.03 3.1097

0.27990 1.600.02500.0020.00000.00001.3770 2.2032 4.3540.50601750.02535.7070720.002 1.1359 2.50271.3800

2.208

4.36

0.506422

0.025

35.7118290.002 1.1365

2.5095

20188

2.400.401.800.70矩形渠道断面尺寸、水深计算

底 宽b(m)1.60

1.600.301.601.60

水 位湿 周水力半径糙 率比降h(m)χ(m)R(m)n I 4014 4.188810.064870.0810.0083401524.73240.6629390.0810.0083401641.99927 1.1770520.0810.0083401756.68853 1.7723470.0810.0083401860.01827 2.6099290.0810.0083401963.96554 3.3681810.0810.0083402068.29129 4.0660120.0810.0083402171.52681 4.7937480.0810.0083402274.59941 5.4991830.0810.0083402377.67202 6.1762850.0810.00834024

80.74461

6.828291

0.081

0.0083

14.0209061270931,401561.9852860896954,4016165.499744002757,40170.0493423963017573,4014水位~流量关系795.6114.02156.643397215.447505277.673195河道流量~水位关系曲线

333.978518041592,4018544.493160351384,4019795.610327806321,4020流 量Q(m 3/s)0.05A(m 2)过水面积0.27172916.39606949.435331100.471771479.724499342.881492410.235771437.541816.34551.347679

2231.97

1437.53901810852,40221816.34129695998,40232231.96604967931,4024

61.99165.50333.981096.43156212984,40211096.43544.49

河道流量~水位关系曲线

河道流量~水位关系曲线

河道流量~水位关系曲线

河道流量~水位关系曲线

河道流量~水位关系曲线

河道流量~水位关系曲线

河道流量~水位关系曲线

0.2780.466.90.160.2231780.040.297571

3 1.1902850.124191

66860325

393

625640

高程

261577.6 470332.5

5293136.5

6996

7 2.054854796.2

80.507464530.8

9

10 2.29723770

110.959472

0.8916

220.5

841393

3690.433333

286

0.2780.552.80.790.107641

0.2780.552.80.10.73392

高程

4

51282

6

7

8

9

1096

110.58

120.4

13

14

2775 1.25