HIDROLOGI

HIDROLOGI

MENGHITUNG LENGKUNG DEBIT (RATING CURVE)

Diketahui data sebagai berikut:Lebar dasar sungai B= 6.8 mSlope dasar sungai I= 0.002Koefisien kekasaran manning n= 0.013Talud penampang sungai= 1:1Kedalaman air (H):No12345678910

H (m)0.53.21.84.72.94.413.32.11.7

No11121314151617181920

H (m)1.44.12.20.94.952.31.23.90.6

Mengurutkan nilai HNomorH (m)

10

20.5

30.6

40.9

51.0

61.2

71.4

81.7

91.8

102.1

112.2

122.3

132.9

143.2

153.3

163.9

174.1

184.4

194.7

204.9

215.0

Rumus yang digunakan:Luas penampang basahKeliling basahJari-jari hidrolisKecepatan airDebit air

Tabel perhitungan debit:NomorH (m)A (m2)P (m)R (m)V (m/dt)Q (m3/dt)

100.0006.8000.0000.0000.000

20.53.6508.2140.4442.0037.312

30.64.4408.4970.5232.2329.909

40.96.9309.3460.7422.81819.531

51.07.8009.6280.8102.98923.318

61.29.60010.1940.9423.30531.729

71.411.48010.7601.0673.59241.236

81.714.45011.6081.2453.98157.523

91.815.48011.8911.3024.10163.490

102.118.69012.7401.4674.44283.013

112.219.80013.0231.5204.54990.064

122.320.93013.3051.5734.65397.387

132.928.13015.0021.8755.231147.145

143.232.00015.8512.0195.495175.840

153.333.33016.1342.0665.580185.983

163.941.73017.8312.3406.064253.049

174.144.69018.3972.4296.217277.821

184.449.28019.2452.5616.439317.305

194.754.05020.0942.6906.654359.633

204.957.33020.6592.7756.793389.462

215.059.00020.9422.8176.862404.866

Menghitung RegresiTabel perhitungan:NomorH (m)Q (m3/dt)log Hlog Q(log H)2(log Q)2log Q x Log H

100.0000.000.000.000.000.00

20.57.312-0.3010.8640.0910.747-0.260

30.69.909-0.2220.9960.0490.992-0.221

40.919.531-0.0461.2910.0021.666-0.059

51.023.3180.0001.3680.0001.8710.000

61.231.7290.0791.5010.0062.2540.119

71.441.2360.1461.6150.0212.6090.236

81.757.5230.2301.7600.0533.0970.406

91.863.4900.2551.8030.0653.2500.460

102.183.0130.3221.9190.1043.6830.618

112.290.0640.3421.9550.1173.8200.669

122.397.3870.3621.9890.1313.9540.719

132.9147.1450.4622.1680.2144.6991.002

143.2175.8400.5052.2450.2555.0411.134

153.3185.9830.5192.2690.2695.1511.177

163.9253.0490.5912.4030.3495.7751.420

174.1277.8210.6132.4440.3765.9721.497

184.4317.3050.6432.5010.4146.2571.610

194.7359.6330.6722.5560.4526.5321.718

204.9389.4620.6902.5900.4766.7111.788

215.0404.8660.6992.6070.4896.7981.822

Jumlah3035.6136.56338.8443.93380.87915.856

Rumus yang digunakan:

Persamaan Q regresi:

Tabel perhitungan Q regresi:NomorH (m)Q regresi (m3/dt)Q (m3/dt)

100.0000.000

20.54.3467.312

30.66.2309.909

40.913.87419.531

5117.08323.318

61.224.48631.729

71.433.19941.236

81.748.71157.523

91.854.53163.490

102.173.93383.013

112.281.04790.064

122.388.48297.387

132.9139.844147.145

143.2169.850175.840

153.3180.491185.983

163.9251.026253.049

174.1277.081277.821

184.4318.542317.305

194.7362.853359.633

204.9393.975389.462

215410.010404.866

Gambar grafik:

RIZKI A. T. CAHYANI (105060100111025)