Presentation on my summer internship program at Singoli Bhatwari Hydroelectric project, Rudraprayag.

1. Internship Presentation on
Singoli-Bhatwari Hydro Electric Project, 3x33 MW
(Rudraprayag, U.K.)
by
VIVEK KUMAR
R680216055
University of Petroleum and Energy studies
Dehradun, Uttarakhand

2. Introduction
• Project Name: Singoli Bhatwari
Hydroelectric Project
• Place : Rudraprayag, Uttarakhand
• First hydel project in Uttarakhand
which is being developed by Larsen
and Toubro.
• The project was awarded in 2006 on
build, own, operate and transfer
(BOOT) basis.
• Capacity- 3X33 MW
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3. Organizational Structure of L&T construction limited
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Head
Office
North South
PM
Planning Store
PM
East
Time office
Plant &
Machinery
Safety Quality Site
West
PM-Project Manager

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SBHEP
Barrage HRT
Drop
Shaft
Surge
Shaft
Power
House

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Fig 1. Layout of the SBHEP

6. BARRAGE
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7. Specifications of Barrage in the Project:
• Average River Bed Level : 998.50m
• Elevation of top : 1020.00m
• Full Reservoir Level : 1017.00m
• Width of Barrage : 59m
• Dimension of Barrage
in the direction of flow : 30m
• No. of Bays : 5
• No. of Abutments : 2
• No. of Piers : 4
• Pier thickness : 3.5 m
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8. Components of Barrage
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Fig 2-10. Components of Barrage
Fig 2 Fig 3

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Fig 4 Fig 5
Fig 2-10. Components of Barrage

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Fig 6 Fig 8Fig 7
Fig 2-10. Components of Barrage

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Fig 9 Fig 10
Fig 2-10. Components of Barrage

12. Head Race Tunnel
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Types of HRT
On the basis of flow
Pressure flow
tunnel
Gravity flow
tunnel
On the basis of shapes
Semi
circular
Circular Elliptical Hourseshoe

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Modified Horseshoe shape
Fig 11. Modified Horseshoe shape

14. Pressure Shaft
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• Pressure shafts are underground circular
openings like tunnels in which fully
pressurized flow of water is expected like in
pipes.
• Depending on the water pressure and rock
cover above the pressure shaft, they can be
either lined with concrete or steel linings.

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Fig 12. View of Pressure shaft

16. Surge Shaft
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Surge tank is an open tank used to
reduce the distance between the free
water surface and turbine in order to
reduce water hammering effect.

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Fig 13. Location of Surge Shaft

18. Drop Shaft
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Depending upon the terrain, the
tunnel had to be designed accordingly
so as to provide optimal cover below
the earth crust

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Fig 14. View of Drop shaft from the top

20. Approach ADITs
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• ADITs are made to access the HRT,
take equipments and construction
material
• They are used to execute work from
both directions

21. Tunneling
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Classification of rock
Drilling
Controlled Blasting
Defuming, Mucking
And Scaling
Lining Installation

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Fig 16. Defuming Device, Booster placed at ADIT 3 face

23. Shotcrete = Cement+ aggregate+ water + accelerators
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•Used to protect and support rock
surfaces after excavation and rock bolting
•Fill the cavities caused by weathering.
Fig 15. View of Drop shaft from the top

24. Power House
• The location where the required head is achieved for the generation
of electricity is selected for the construction of the Power House.
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Fig. 16 Location of Power House in the plan of the project Fig 17. View of Power House from the NH 109

25. Power House (Machine Hall)
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Fig. 18 View of Machine Hall
•Turbines were placed in the
Machine Hall
•Francis turbines are used in the
project

26. Why Francis Turbine?
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https://www.youtube.com/watch?v=3BCiFeykRzo&feature=youtu.be

28. Power House (Tail Race Channel)
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Fig 16. Tail race channel and Winch machine

29. Learnings
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•Material Procurement
•Working of Aggregate processing plant
•BBS and more

30. Material Procurement
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Site
Engineer
Site
manager
Planning
Dept.
Store

31. Working of Aggregate processing plant
• Boulders greater than 300m are broken by broker machine.
• After primary crushing, the sizes of broken stone are converted into 80mm to
100mm.
• The crushed stone materials are conveyed by belt conveyor for secondary
crushing .
• After secondary crushing the crushed stone are sent to vibrating screens for
separation of coarse and fine aggregates.
• There are two deck vibrating screens, on top 40mm sieve size and in bottom 24
mm sieves placed. The crushed stone retaining on 40mm sieve is sent back to the
impact crushing by conveyor belt and passing by 40mm sieve is sent for further
separation until to achieve required aggregate sizes.
• The crushed stone passing by 4.75mm is sent by conveyor belt into spiral clarifier
for separating the sand and silt.
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Fig. 14 Primary Crusher( Jaw Crusher) Fig. 15 Secondary Crusher with vibrating
screens, 40mm and 20mm
Fig. 16 Spiral Clarifier

33. Bar bending schedule
•BBS.xlsx
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34. Plant And Machinery
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Typical data-
Self-weight- Less than 26 tonnes
Vertical Reach- 35.6 m
Horizontal reach- 31.4 m
Depth of reach- 23.9 m
Delivery rate- 60 cum/hr.
Fig 17. Boom Placer

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Capacity – 10 tonne
Fig 18. Gantry Fig 19. Shotcrete Machine
Capacity - 9 cum/hr

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Fig 20. Transit Mixer
Capacity- 6 cum
Fig 21. Dumper (Hyva)
Capacity- 14 cum

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38. Thank You!
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