show the details about rubber dam.

2. •
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Advantages of Rubber dam.
What is rubber dam
Construction of Rubber dam
Operation mechanism(Automatic control mechanism)
Use of a rubber dam in hydropower plant
Selection of a Rubber dam site
New types of rubber dams
Rubber dam: New hope for farmers?
Rubber Dam Applications
Rubber dam manufacturers
Future plan of work in India
Conclusion
References

3. 

Easy installation
Lower investment cost ( about 40%) than
the conventional gated regulating
structure

Ground re-charging

4733
Increase of per capita water storage
capacity and water use efficiency
Other purposes: irrigation, water supply,
power generation, tidal barrier ,environmental improvement.
Russia
China
1964
1111
207
6103


India’s per capita water storage
Better control of flood and draught.
Australia
India
USA

4. 
Basically rubber dams are fabric reinforced rubber bags, which can be
inflated or deflated by water or air. The fabric gives the necessary
strength where as rubber acts as a shock absorber and water proofing
material.
•
It function as a reliable crest-adjustable water gate.

Construction of Rubber dam

Concrete base slab & side walls
Anchorage
Dam bag /Membrane
Water or air filling & draining system/Control system
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


5. Rubber dam
Concrete structure
Anchoring
This figure shows how rubber body is secured to a concrete foundation by
its anchor line.

6. Concrete Base Slab:

Concrete slab is provided as a
base for rubber construction.

The side walls of the dam
should be vertical or inclined
Anchorage:

Dams are secured to the
concrete foundations using a
single or dual core clamping
plates

Plates are clamped to the
membrane using anchor bolts

7. Dam bag /Membrane:


The rubber dam body is a membrane of rubberized fabric, which is
composed of layers of synthetic rubber and layers of synthetic fiber
reinforcement that are firmly bonded together by vulcanization.
Physical-mechanical properties of the dam membrane are given by
 tensile strength
 elasticity and flexibility
 ozone-resistance
 high-temperature and low-temperature resistance
 abrasion-resistance
 weather-resistance
 specific life strength

8. Inflation:
An air blower or water pump and
ancillary devices such as valves are
used to inflate the air or water filled
dam respectively.
Deflation:
There are three types of deflation
systems: bucket, float, and
electrical.
Safety systems:
An air blow-off tank(air-filled dam)
and siphon pipe(water-filled dam)
can be used as a safety device in
case principal deflation mechanism
fails

9. 



A pressure sensor is used to
monitor the inner pressure of
the dam body.
The inlet of air/water to the
dam
body
is
cut
off
automatically
when
inner
pressure reaches the preset
level.
A laser height measuring
device can be installed inside
the dam body.
A sensor monitors water level.
The exhaust valve is opened
automatically as deflation
level is reached.

10. Bridgestone Inflatable /Deflated Dam on Susquehanna River at Sunbury,
Pennsylvania

11. Water filled rubber dam:
Air filled rubber dam:
Advantages

The weight of the water-filled dam
prevents vibrations.

The entire height of the dam rises or
lowers evenly.
Weaknesses

More expensive construction: a
wider concrete sill, more expensive
water pumps, more expensive
pipelines due to a bigger diameter
of pipes.

Manipulation takes more time (filling
up and emptying the weir).

Freezing of the weir (the possibility
of water freezing in the system).

Vandalism (puncturing, cutting).
Advantages

Faster lowering and raising of the weir.

Cheaper construction.

Lower power consumption.
Weaknesses

Vibrations of the weir.

Uneven emptying of the weir (sinking
of the centre of the weir).

Vandalism (puncturing, cutting).

12. Measures to reduce vibration
› Fin structure
› Semi-circle shape
› Double-line anchoring
› Hose Spacers

13. 
In the site selection following condi
-tions should be considered:
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Straight section
Smooth Flow
Riverbed and Bank slopes are stable.
Geological
Hydrologic
Meteorological
hydraulic conditions
•
It is better to carry out the construction of
civil works related to the rubber dam in a
dry season

14. Power of a hydroelectric power plant depends also on the speed of the river
and that the power expressed in percentage increases more at the rivers
where the fall is smaller.
The percentage of the increase of the power is calculated in the following
way:
%P = the percentage of the increase of power in a hydroelectric plant
h2 = the height of the increase of the fall in a hydroelectric power plant
h1 = the initial height of the fall in a hydroelectric power plant

15. Tin Shui Wai Rubber Dam Hong Kong
Janjhavathi Rubber Dam (India)
irrigates 24,000 acres
Rubber weirs at the river Sava in Kranj
Rubber Dam ,Bhubaneshwar,
Orissa

16. 
Rubber dam with inspection gallery: Some large dams of Bridgestone and
Sumitomo have an inspection gallery . An access door and air-lock system
are provided to allow entry into the dam when its in the inflated mode.

Rubber dams with different deflation modes: New types can deflate in both
the upstream and downstream directions according to the direction of flow
or deflate directly onto the foundation.

Innovative fish-way: The rubber dam can be incorporated into a fish-way.

17. 
Impact of Rubber Dam on crop
productivity
of
summer
vegetables at Baghamari,Orissa.
S.NO.
Productivity(t/ha)
Before
Installation
of Rubber
Dam(2009)
1.
After
installation of
Rubber Dam
(2010 )
2.873
4.67

18. HYDRO POWER Project: Rainbow Dam
Country: USA Size: 3.66Hx67.7L
WATER SUPPLY Project : Gubeng Dam
Country : Indonesia Size : 2.85Hx12.0L
GROUND RECHARGING Project : Alameda
Country : USA Size : 3.96Hx88.8L
TIDAL BARRIER Project : Naruse River
Country : Japan Size : 2.3Hx42.1L

19. Purpose
Dam/Project Name
Country
Height (m)
Width (m)
Groundwater
recharge
Sonoma Dam
USA
3.3
36.9
Hydropower
Glenford dam
Canada
1.7
74.7
Irrigation
Lamchi Muang Ling
Dam
Thailand
4
73
Increasing reservoir
capacity
Mirani Weir
Australia
1.8
107.3
Navigation
Tsudae Dam
Japan
1.5
20
Recreation
Shin Chon Dam
Korea
1.5
50.65
Rehabilitation
Vaca Dam
Philippines
2.0
13.3
Drinking water
Altoona Dam
USA
1.53
35.7
Flow control
(sewerage)
Ichioka Sewerage Plant
Japan
1.1
6.5
Flood control
Shing Chu River Dam
Taiwan,
China
1.6
8
Tidal barrier
Naruse River
Japan
2.3
42.1

20. Trelleborg Queensland Rubber
(Australia)
http://www.trelleborgqr.com
Satujo (France)
http://www.satujo.com/english/sommairea.
htm
Bridgestone (Japan)
http://www.bridgestoneengprod.com/
Rubena (Czech)
http://www.rubena.cgs.cz/english/rubena.ht
ml
Hydroconstruct (Austria)
http://www.hydroconstruct.at/e_start.htm
Superior Dam LLC (USA)
http://www.superiordam.com/index.html
Qingdao Hua Chen Industrial
Technology Co.(China)
Indian Rubber Manufacturers
Research Association (India)
http://www.huachenrubber.com
Thane, Maharastra

21. 
Gujarat's first rubber dam to be built over Tapi at Rundh.
8, 2010, 10.40pm IST

Expert team inspects site for rubber dam in Pampa River.
2007.


Source: The times of India, Surat. Jun
Source: The Hindu Kerala.July 28,
First rubber dam in India is being built in Andhra Pradesh, over the Janjhavathi
river in Vizianagaram district.
SEVERAL STATES including Jharkhand and West Bengal, have shown interest in
rubber dams. Jharkhand Water Resources Department officials said that they
have approached Hydroconstruct to build a dam. Source: Tehelka.com August 28, 2010, Issue
34 Volume 7.



Installation and evaluation of Rubber Dams at various watersheds at
Bhubaneshwar, Orissa.
The steel industrial kerala limited a public sector company, has entered into an
agreement with an australian firm(hydro construct) for the construction of
rubber dams in kerala. Source: The times of India, Thiruvananthapuram. Mar 3, 2002, 11.40pm IST
Many more……

22. A flexible way to manage water?
Hi-tech rubber dams could be the
answer.

23. 



•

P. Roy Choudhury, S. K. Chakraborty, Manasi Nath, “Rubber Dam a novel
approach for control of water flow in watershed management for
agricultural growth of India” published in Rubber India, vol LX, No 8, pg 49,
August 2008
http://www.hydroconstruct.at/
Bridgestone Corporation. 1997. Rubber dam: inflatable rubber weir. Tokyo,
Japan.
P. Roy Choudhury, Manasi Nath, Bhagabat Bhuyan “ Design and
Development of Rubber Dam – a farmer friendly Rubber reservoir”, published
in Rubber Chem Review, vol XXXVII No 6, pg 29, July- August 2008.
X Q Zhang, P W.M Tam, W Zheng ,Construction, operation and maintenance
of rubber dams , Canadian Journal of Civil Engineering Volume 29, Number
3, June 2002.
Karl-Heinz John, Michael Tiegelkamp, IEC 61131-3:Programming Industrial
Automation Systems, Springer.

24. Thank You