Once the flood protection wall is completed, it will be able to handle 12 lakh cusecs of flood water.The flood protection wall is being constructed with three feet in diameter, 18 metres depth, 8.9 metres height concrete wall on raft foundation, 2x0.6 metres width and 1.56 km length. Steps in this regard are being taken by the district administration and Vijayawada Municipal Corporation.Over 31,000 denizens residing in houses downstream Prakasam Barrage will be benefited through this project. Works were entrusted to Messrs VSSS- SEW-SC (JV) to take up small and minor works at a cost of Rs 5.52 crore.Īs many as 524 houses should be relocated for the construction of the flood protection wall.
Officials rehabilitate hundreds of families residing in houses alongside River Krishna downstream Prakasam Barrage every year during the floods.In 2019, the Chief Minister inspected the flood affected areas in the low-lying areas like Tarakarama Nagar, Ranigarithota and Bhupesh Gupta Nagar, and promised to offer a permanent solution to the perennial problem.In January 2020, the government issued GO 131 sanctioning Rs 122.9 crore for the construction of flood protection wall between Kanaka Durga Varadhi and Koti Nagar.įollowing the suggestions made by the judicial preview committee, works commenced at a cost of Rs 110.4 crore through reverse tendering process. Salient features of flood protection wall The installation was completed over 10 days, supervised by Geogreen.Ĭontact ABG to discover how Webwall geocell could help you deliver a sustainable, cost efficient and carbon neutral solution.Later, the Chief Minister unveiled a pylon in the presence of ministers Botcha Satyanarayana, Vellampalli Srinivasa Rao, Kodali Sri Venkateswara Rao (Nani), P Anil Kumar and Perni Venkataramaiah. District Collector A Md Imtiaz, Mayor Rayana Bhagya Lakshmi, Municipal Commissioner V Prasanna Venkatesh, Police Commissioner Bathini Sreenivasulu and other officials were also present. In a short period the wall will be completely overgrown and blend in with the other vegetation.ĪBG designed and installed the 45m long and 1.5 to 2.25m high Webwall.
STONE FLOOD WALL INSTALL
In addition, it is faster and cheaper to install and the green colour of the front face immediately blends in with the surroundings. The Webwall geocell solution is highly cost effective and achieves a far lower carbon footprint compared to transporting concrete and stone to site. The front faced geocell panels help to establish and protect the vegetation roots from erosion in the event of a flash flood.
Locally sourced topsoil was used to fill the front panels prior to planting. At the higher levels of the embankment there will be less scour, and ABG’s flexible Webwall geocell system was installed to provide a reinforced soil retaining system, bringing the embankment up to the required garden and footpath level. The challenge was to optimise cost, design capability and aim for as natural a finish as possible.Ī steep concrete revetment was constructed for the lower section of the embankment and faced with local natural stone to protect against the high turbulence generated at the narrow bridge. A steep reinforced wall solution was required which could withstand high flow in flash flood conditions, but faced with materials which remain in-keeping and sympathetic with its location in the heart of the Lake District, renowned worldwide for its outstanding natural beauty. The bridge structure, which had also been damaged, was to be returned to its original profile and the private land restored. This would cause a loss of supporting ground for the trees downstream however, and would encroach into private land and the river footpath on the upper side of the river bank. The simplest remediation would have been to widen the river, forming a self-stabilised embankment capable of handling high volumetric flow at a lower water velocity. This severe scouring and erosion caused the riverside footpath to slip, putting nearby trees and property at risk, including the adjacent Grade 1 listed Smoke Cottage. This created a highly turbulent flow on both downstream embankments, resulting in heavy erosion. The listed structure, originally constructed in 1817, forms a constriction to river flows and during the storm, the difference in the depth of water between the upstream and downstream sides of the bridge was 5-8m. The Forge Bridge over the river Greta in Keswick and its downstream embankments were extensively damaged during Storm Desmond in December 2015.
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