A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Morphodynamic modelling of an alluvial river controlled by dam discharge and barrage operation: a study on Durgapur Barrage, India
Reservoirs and barrages , built across alluvial rivers throughout the world, are losing their storage capacity at an estimated rate of about 1% annually. The pond area of Durgapur Barrage on River Damodar, India, controlled by barrage-gates is no exception. In spite of its service for more than 60 years through judicious gate-operation schedule, it is found that 52% of initial storage capacity Pond has been lost since its inception in 1956. A morphodynamic study of the alluvial Damodar River, extending from Maithon and Panchet dams at upstream to Durgapur Barrage in the downstream, has been done using a numerical model of MIKE-11. Hydrometeorological data of Damodar-Barakar River basin were used to simulate hydrodynamic and sediment transport models for ascertaining annual rate of erosion and deposition during the period 1956–2016. Study shows that about 6 million M3 sediment were transported from catchment through Dam-discharge, a part of which got deposited in the river bed while the remaining 4.9 million M3 washed away downstream through Barrage gates. Although the rate of deposition in the pond area was initially higher during the period 1956–1985, which has subsequently reduced . However, daily deposition increased more or less linearly with the increase in discharge of the river.
Morphodynamic modelling of an alluvial river controlled by dam discharge and barrage operation: a study on Durgapur Barrage, India
Reservoirs and barrages , built across alluvial rivers throughout the world, are losing their storage capacity at an estimated rate of about 1% annually. The pond area of Durgapur Barrage on River Damodar, India, controlled by barrage-gates is no exception. In spite of its service for more than 60 years through judicious gate-operation schedule, it is found that 52% of initial storage capacity Pond has been lost since its inception in 1956. A morphodynamic study of the alluvial Damodar River, extending from Maithon and Panchet dams at upstream to Durgapur Barrage in the downstream, has been done using a numerical model of MIKE-11. Hydrometeorological data of Damodar-Barakar River basin were used to simulate hydrodynamic and sediment transport models for ascertaining annual rate of erosion and deposition during the period 1956–2016. Study shows that about 6 million M3 sediment were transported from catchment through Dam-discharge, a part of which got deposited in the river bed while the remaining 4.9 million M3 washed away downstream through Barrage gates. Although the rate of deposition in the pond area was initially higher during the period 1956–1985, which has subsequently reduced . However, daily deposition increased more or less linearly with the increase in discharge of the river.
Morphodynamic modelling of an alluvial river controlled by dam discharge and barrage operation: a study on Durgapur Barrage, India
Nandy, S. (author) / Das, M. K. (author) / Barman, B. C. (author) / Sahu, R.B. (author)
ISH Journal of Hydraulic Engineering ; 29 ; 403-418
2023-12-01
16 pages
Article (Journal)
Electronic Resource
English
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