• Vishal Chopra
• Vinod Kumar Sonthwal

Geobags are generally filled with sand, sometimes geotextile containers, having mass nearly 1000 to 1500 kg. Geobags are used to create long guiding revetments along sand-bed rivers, having the advantage of acting as both the filter layer and the protection element against scour and erosion (6; 16). Geobags have been found to be a viable solution for riverbank erosion in sand-bed rivers. The success of the geobag revetments is credited to some unique qualities of the geobags, primarily, geobags' resistance against winnowing in the self-launching, underwater apron due to the flexible and porous nature of the bags. The scour that occurs at the toe of the apron undermines the covered bed, and causes the geobags to ‘launch’ down the eroded slope. Using physical model tests, this study re-examined the stability of geobags under current loading. The study used larger scaled elements than previous tests in order to capture the flexibility of the geobags in the experiment. The following conclusions have been made from this study. First, dumped geobags are much more stable than orderly placed bags. Second, the current USACE stability formula can be improved in order to better predict the incipient motion of geobags. We proposed that the geobag thickness be used as the characteristic diameter as it is a more intuitive way to describe how the geobag obstructs the oncoming flow.

Geobags, protection, characteristic, flexible.

"RIVERBANK PROTECTION USING SAND FILLED GEOBAGS", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.9, Issue 7, page no.d529-d533, July-2022, Available :http://www.jetir.org/papers/JETIR2207369.pdf

"RIVERBANK PROTECTION USING SAND FILLED GEOBAGS", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.9, Issue 7, page no. ppd529-d533, July-2022, Available at : http://www.jetir.org/papers/JETIR2207369.pdf