Twesco dam construction and maintenance division provides expert rubber dam engineers who specialize in advanced dam construction, rehabilitation and replacement services for water dams of all sizes. As one of the early foundations of the company, dam repair and construction is one of the major services offered by twesco and we are well equipped with advanced technology for quality service provision.
About rubber dam
A unique characteristic of the rubber dam is its ability to function as a reliable crest-adjustable water gate. When inflated by a medium (air, water or their combination) it rises to retain water; when deflated by releasing the medium, it flattens onto the foundation, completely opening the channel for free passage of water. The rubber dam can also be adjusted to operate at intermediate heights to meet the needs for different upstream/downstream water levels in different time.
And advantages of rubber dams
Long rubber dams can be installed in broad rivers without piers. They are adaptable to virtually any side slope angle. Little work is needed to modify riverbanks. While for a steel gate, intermediate piers are generally needed for about every 20m. Furthermore, steel gates cannot be installed unless the side slopes are vertical.Short construction period
Compared with concrete steel-gates the rubber dam body is lighter and easier to handle. It can be fabricated in one piece at a factory and rolled up for easy transportation to the dam site. The rubber dam only requires a simple light foundation with a 10 to 15cm recess, while steel-gates normally have a 50 to 80cm recess .The construction of the concrete foundation and installation of the rubber body can be completed quickly, easily and economically.Easy maintenance and repair
Minimal maintenance is needed for rubber dams. There is no need for painting, greasing, or lubrication. With a steel gate, various maintenance expenses are needed, such as removal of rust, repainting and changing of hydraulic oil.Low project life cycle cost
The life cycle cost of a rubber dam project is low due to prefabrication of the dam body, little modification to riverbanks, light concrete foundation, quick construction and installation, easy operation and minimal maintenance.
Applications of rubber dams
- Flood mitigation and dam safety
- Increasing water storage capacity and power output
- Irrigation and water supply