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PROTECTION MEASURES FOR EROSION AREA IN GAUTAMI GODAVARI RIVER
Most of the rivers in India rise in hills, flows towards plain after traversing certain distance and continue towards outfall into sea or other river. It is known that changes in river bed and/or bank takes place due to imbalance in supply and transport capacity of sediment that varies as power of flow velocity. Further, changes in river bed can also take place if the soils forming banks are weaker against the erosive actions of flow velocity. Protection is required at such locations for safety of adjoining villages, fields and establishment. The process of deriving such measures starts from identification of erosion areas that can be carried out through analysis of bank line data collected from satellite. The findings are to be confirmed through ground truth verification. Design parameters for deriving protection works were estimated through simulation or on site measurements. A review of alternate protection works was taken duly considering the soil conditions at site and appropriate measure was selected. A case study of deriving scheme for protection of a river in peninsular India is presented. The study includes above cited three segments viz. identification of erosion reaches using bank line data of past 15–20 years, simulation of a river reach to derive hydraulic design parameters using simulation model and integration of the results of two with review of alternatives to derive the protection measures.
PROTECTION MEASURES FOR EROSION AREA IN GAUTAMI GODAVARI RIVER
Most of the rivers in India rise in hills, flows towards plain after traversing certain distance and continue towards outfall into sea or other river. It is known that changes in river bed and/or bank takes place due to imbalance in supply and transport capacity of sediment that varies as power of flow velocity. Further, changes in river bed can also take place if the soils forming banks are weaker against the erosive actions of flow velocity. Protection is required at such locations for safety of adjoining villages, fields and establishment. The process of deriving such measures starts from identification of erosion areas that can be carried out through analysis of bank line data collected from satellite. The findings are to be confirmed through ground truth verification. Design parameters for deriving protection works were estimated through simulation or on site measurements. A review of alternate protection works was taken duly considering the soil conditions at site and appropriate measure was selected. A case study of deriving scheme for protection of a river in peninsular India is presented. The study includes above cited three segments viz. identification of erosion reaches using bank line data of past 15–20 years, simulation of a river reach to derive hydraulic design parameters using simulation model and integration of the results of two with review of alternatives to derive the protection measures.
PROTECTION MEASURES FOR EROSION AREA IN GAUTAMI GODAVARI RIVER
Bhave, V. G. (author) / Oak, R. A. (author)
ISH Journal of Hydraulic Engineering ; 17 ; 88-97
2011-01-01
10 pages
Article (Journal)
Electronic Resource
Unknown
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