Small Decentralized Hydropower Program National ... - Cd3wd.com

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Canales Trapezoidales
w L*H -I Inclination 2: 1
Velocidad
Velocity
v = m/s
y Capacidad
and
Capacity
Q = l/s
Medidas
Measurements
Pendiente
Slope
Revestimiento
Lining
Ancho de1 Fondo
Width of Bottom L
Altura
Height H
Borde Libre f
Free Edge
Tirante de Agua t
Depth of Water
Area Mojada A
Wet Area
Perimetro Mojado
Wet Psrimeter ’
Radio Hidraulico
Hydraulic Radius R
Nota: Las medidas f y t varian ligeramente segin la pendiente y revestirniento ( f 2 cm.)
Espesor de revestimiento = 10 cm.
Perfiles Profiles
I k-k’ v II1 ’ Iv
V "IQ Q
0.23 43 0.26 65 0.28 100
0.56 100 0.62 155 0.70 250
Note: The measurements f plus t vary slightly depending rw slope and lining (f 2 cm.) Thickness of lining.
0.46 165
1.13 1 400
c.31
0.73
0.47
1.18
Trapezoidal Canals
Grade 21
130
310
200
500
0.35 0.45 0.50 0.60 0.70
0.45 0.55 0.60 0.70 0.80
0.10 0.16 0.13 0.20 0.20
0.35 0.39 0.47 0.50 0.60
O.i80 0.252 0.355 0.425 0.600
1.12 1.32 1.58 1.72 2.04
0.295 0.190 0.225 0.247 0.294
Forebay
V
---I-
V Q
0.35 210
0.83 500
0.55 330
1.33 800
aumentando profundidad y longitud, de manera que A forebay with a complete sand trap has been
!a superficie de! rlewenahr que - de @..I$ J’ !s designed (sedimentation to 0.3 mm in diameter).
velocidad de1 agua no pase de 10s 20 cm/s - (Ver Sometimes when the terrain is steep, it is
Tabla de Desarenadores) La entrada a la Tuberia de necessary to reduce the width of the sand trap.
- Presih, protegida por uria reja fina y una com- To preve;lt the cost of construction from
puerta de cierre, debe quedar a 80 cm por debajo de escalating, either a complete sand trap is built
la superficie de1 agua en la Taza y tendr8 forma de near the intake or the decreased width of the
embudo, con bordes redondeados. sand trap is compensated for by increasing the
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