Gujarat's first rubber dam to be built over Tapi
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Vijaykumar Dave
Jun 9, 2010, 8:18:04 PM6/9/10
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THE TIMES OF INDIA
Gujarat's first rubber dam to be built over Tapi
Melvyn Thomas, TNN, Jun 8, 2010, 10.40pm ISTSURAT: While the fate of the much-hyped multi-crore cable-stayed bridge over the Tapi is still hanging in balance, urban planners of the city have set their eyes on the construction of another engineering wonder the state's first balloon barrage or rubber dam in the downstream of river Tapi at Rundh.
A huge amount of water released from the Ukai dam during the monsoon season flows down the river into the Arabian Sea. However, the Surat Municipal Corporation (SMC) has zeroed in on the rubber dam between weir-cum-causeway reservoir and the Magdalla bridge to save this water for generating hydroelectricity, satisfying the water needs of the citizens and the irrigation needs of the farmers.
Rubber dam is a new type of hydraulic structure compared with steel sluice gate, and made of high strength fabric adhering with rubber, which forms a rubber bag. The barrage, made of rubber, will be filled with air, so that it can be inflated or deflated as per requirement.
The Surat Municipal Corporation's (SMC) hydraulic department has submitted the proposal of constructing rubber dam at an estimated cost of Rs 120 crore in the standing committee. Once the project proposal gets an in-principle approval in the standing committee on Thursday, the department is planning to invite consultants for the feasibility study and the actual capacity of the pneumatic barrage to be developed near Rundh.
"The total length of the rubber dam would be 500 metres and it will have an estimated capacity to store about 16 million cubic mt of water. Once the project is approved in the standing committee, we are planning to invite the expert consultants about the pros and cons of the projects," said hydraulic engineer JK Shah.
According to Shah, the barrage works on the simple methodology of inflation and deflation of air. During dry seasons, air will be filled in the barrage to prevent flow of water into the sea, while it will be deflated during monsoon when water flow is heavy. The entire water can be flushed if the civic body wants to clean it.
About its advantages, Shah said it is a low cost and simple hydraulic structure that saves huge amount of steel, cement and other construction materials. The dam's body can be fully deflated to lower it to flat level on base floor so that the flood flow passes without any obstruction. Construction and installation are quicker compared to conventional gated regulating structures and the total investment is 30-40 per cent lower than conventional barrage dams.
Shah said, "Before constructing the rubber dam, the river would need extensive dredging and that the storm water lines would have to be diverted."
A huge amount of water released from the Ukai dam during the monsoon season flows down the river into the Arabian Sea. However, the Surat Municipal Corporation (SMC) has zeroed in on the rubber dam between weir-cum-causeway reservoir and the Magdalla bridge to save this water for generating hydroelectricity, satisfying the water needs of the citizens and the irrigation needs of the farmers.
Rubber dam is a new type of hydraulic structure compared with steel sluice gate, and made of high strength fabric adhering with rubber, which forms a rubber bag. The barrage, made of rubber, will be filled with air, so that it can be inflated or deflated as per requirement.
The Surat Municipal Corporation's (SMC) hydraulic department has submitted the proposal of constructing rubber dam at an estimated cost of Rs 120 crore in the standing committee. Once the project proposal gets an in-principle approval in the standing committee on Thursday, the department is planning to invite consultants for the feasibility study and the actual capacity of the pneumatic barrage to be developed near Rundh.
"The total length of the rubber dam would be 500 metres and it will have an estimated capacity to store about 16 million cubic mt of water. Once the project is approved in the standing committee, we are planning to invite the expert consultants about the pros and cons of the projects," said hydraulic engineer JK Shah.
According to Shah, the barrage works on the simple methodology of inflation and deflation of air. During dry seasons, air will be filled in the barrage to prevent flow of water into the sea, while it will be deflated during monsoon when water flow is heavy. The entire water can be flushed if the civic body wants to clean it.
About its advantages, Shah said it is a low cost and simple hydraulic structure that saves huge amount of steel, cement and other construction materials. The dam's body can be fully deflated to lower it to flat level on base floor so that the flood flow passes without any obstruction. Construction and installation are quicker compared to conventional gated regulating structures and the total investment is 30-40 per cent lower than conventional barrage dams.
Shah said, "Before constructing the rubber dam, the river would need extensive dredging and that the storm water lines would have to be diverted."
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- Vijaykumar Dave
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