The Tupakulagudem project proposed across Godavari River by construction of a barrage at Tupakulagudem (V), Eturunagaram (M), Warangal District and diverting water through tunnels and lifts. It is then essential to construct a model to know the performance of barrage at various design discharges. The model studies are carried out to verify adequacy of vent way for a discharge of 85000 cumecs, trend of velocities in spillway and under sluice sections, energy dissipation arrangement.

1. 2D HYDRAULIC MODEL
STUDY OF
TUPAKULAGUDEM
BARRAGE
Project Guide : Mr. S. Peddaiah
BY
S. DEEPAK
V. KAVYA
V. AKHIL
M. NAZEER
A. JAYASURYA

2. HYDRAULIC PARTICULARS
OF BARRAGE
 FLOOD DISCHARGE(500YRS): 1,02,000cumecs
 FLOOD DISCHARGE(100YRS): 85000cumecs
 LENGTH OF BARRAGE : 1132 m
 FULL POND LEVEL : +83 m
 CREST LEVEL FOR SPILLWAY BAYS: 71 m
 CREST LEVEL FOR SLUICE BAYS : 70 m
 NO. OF GATES IN SPILLWAY BAYS : 48
 NO. OF GATES IN SLUICE BAYS : 11
 TYPE OF GATES: RADIAL
 TYPE OF ENERGY DISSIPATION : HYDRAULIC JUMP ON
CISTERN FLOOR
 SCALE RATIO : 1:75

3. STEPS FOR CONDUCTING
MODEL STUDIES
 SELECTION OF THE MODEL SITE
 LEVELLING OF THE BED
 STUDYING OF SPILLWAYAND UNDERSLUICE SECTION
DRAWINGS
 CONSTRUCTION OF 2D MODEL
 PUMPS , GAUGES AND RECTANGULAR NOTCH SETUP
 TESTING OF ADEQUANCY OF SPILLWAYAND UNDERSLUICE
SECTIONS FOR VARIOUS DISCHARGE CONDITIONS
 MEASURING THE VELOCITIES ON THE DOWNSTREAM OF
BARRAGE
 PREPARATION OF FINAL REPORT FROM RESULTS OF STUDIES

4. STEP:1 Selection of the site

5. STEP:2 Leveling of the bed
By using Auto level, the bed is levelled.

6. Step 3: Studying of Section Drawings
SECTION OF SPILLWAY

7. SECTION OF UNDER SLUICE

8. STEP:4 CONSTRUCTION OF THE MODEL
Design of model spillway is done on the basis of wooden template
Design of model under sluice bay is done on the basis of wooden template

10. FINAL OUTLOOK OF
MODEL

11. STEP-5 : NOTCH AND GAUGE SETUP
Gauge setup at U/S Level,
D/S level , Notch
RECTANGULAR NOTCH
Q = 2/3 Cd 2𝑔H3/2 L
H – Notch Head , L = length of notch ( 3ft)
Cd = 0.65 .

12. STEP -6 : DISCHARGE CALCULATIONS:
 For 100yrs Discharge is 85,000cumecs(59 gates)
 Dicharge through 11gates(sluice bays):16747cumecs
 Discharge through 48gates(spillway bays):68253cumecs
 We want dicharge through 3 gates i.e. 1 sluice and 2 spillway bays.
Qp=(1/11*16747 + 2/48*68253)=4366.329cumecs
 From Froudes model law,
Qr= Lr2.5
Qp/Qm=(75)2.5
Qm=4366.329/ (75)2.5
=0.0896cumecs*35.16
=3.1653cusecs
 Tail water level=+86.95m

13. DISCHARGE :100%
Qm=3.1653cusecs
tail water level=+86.95m
Hm=13.79cm
INITIAL
READING
(CM)
HEAD
READING
(CM)
FINAL
READING
(CM)
REMARKS
NOTCH
READING
63.94 13.79 77.64
UPSTREAM
READING
48.69 21.88 70.50
70.65
Mean:70.57
U/S WATER
LEVEL
87.41m
DOWNSTREM
READING
71.55 19.93 91.48

14. TABULATION OF VARIOUS DISCHARGE CONDITIONS:
S.NO DISCHARGE
CONDITION
PROTOTYPE
DISCHARGE
MODEL
DISCHARGE
TAIL
WATER
LEVEL
NOTCH
HEAD
UPSTREA
WATER
LEVEL
1 50% of 100yrs 77087.55
cusecs
1.5826 cusecs 82.11m 8.77cm 82.31m
2 75% of 100yrs 115646.385
cusecs
2.373 cusecs 84.19m 11.44cm 84.78m
3 500yrs 185005.93
cusecs
3.798 cusecs 88.15m 15.51cm 89.3m abo
HFL

15. 50% Discharge Condition 0f
100yrs
100% Discharge
Condition of 100yrs
75%
Discharge
Condition
of 100yrs

16. 500yrs Discharge
Condition

17. Step-7 Measuring of velocities at different distances from barrage
axis:
 Velocities are measured with the help of Pitot Tube and U-tube
Manometer.
 Velocities are measured at 125m , 175m , 200m , 225m from barrage axis
along the downstream side.
 Pitot tube should be placed at a height of 0.4h from bottom where h is the
depth of water.

18. Thank you