What is Rubber Dam?
The Rubber dam is relatively recent
Rubber dams are placed across
channel, stream and weir crest to
increase the upstream water level when
inflated and because of that rubber
dams are also called as inflatable dams.
The dams are tubes which are made of
Construction & Membrane design
An inflatable rubber dam is basically an envelope formed from a fabric
reinforced rubber membrane which is anchored to a concrete foundation.
Membranes are designed and constructed to meet the individual
requirements of each installation.
The correct cross section of construction materials and correct
manufacturing techniques maximizes the reliability and service life of the
• Better control of flood and
draught, through watershed due to
automatic inflation and deflation
• Increase per capita storage capacity
and water use efficiency.
• Easy installation.
• Reduction of soil erosion.
• Ground Recharging.
Built up cost
Lower investment, cost about 40% than the
conventional gated regulating structure.
Construction cost is mainly divided into two parts as follows:
Designing of the rubber dam, including dam body and related
Manufacturing and installation.
The construction varies with the width of dam.
INFLATION AND DEFLATION
PHENOMENON OF RUBBER DAM
To undertake design &
development of rubber
composites and process for
making rubber dams.
To design and develop
components of rubber dam.
To develop and validate rubber
FIRST INDIGENIZED MODEL RUBBER DAM
PROTOTYPE (MRDP) DEVELOPED AT
IRMRA(Indian Rubber Manufacturers Resource
To form rubber dam the membrane is anchored to the
foundations or weir. Rubber dams are secured to the
concrete foundation using a single or dual row of clamping
plates. These plates are attached to anchor bolts which are
either cast into new foundations or embedded into existing
Rubber Dam control systems
The control system depends on the customer’s specific requirements and choice of
either an air filled or water filled rubber dam.
There are various control systems available ranging from simple manual control of
inflation and deflation to advanced control of the upstream water level within a
Options for automatic control include :-
(A) Electrical automatic deflation
(B) Mechanical automatic deflation
(C)Bag pressure control
Rubber used in the construction
Natural Rubber, SBR blend is selected as a best cover compound in terms of
Nylon-6 fabric gives better adhesion than Nylon 66 and Polyester fabric.
Weaving pattern & gram per square meter (gsm) of fabric also play
important role for adhesion & strength of composite.
Gsm of the treated fabric is optimized to get specified strength, adhesion
and flexibility of composite material.
Purposes of Rubber Dam
It can be used as a system of flood control.
It can be used for creating recreational lakes without environmental
It can be also used in power generation for small industries.
In case of repairing other dam, it can used for diverting the water, because it
can be quickly installed.
It can be used as water reservoir also in rural area as it is very economical.
Future projects in India.
The First Rubber dam in India will be built across the
Bharatapuzha in Kerala. A contract to this effect has been
signed by the public sector steel industries Kerala
limited(silk). Studies have confirmed that low cost rubber
dams would be suitable for Kerala's river such as
Bharatapuzha and periyar
• Rubber Dam is an innovative technology, which can be used profitably for
various purposes such as :
1) Water Parks
2) Flood Control
3) Diversion for Building main Dam
4) Repairs of Dams
5) Small Power plants
6)Rural water supply