North Lakhimpur, Assam, India | Water Resource Department, Assam
The river Brahmaputra has been the lifeline of northeastern Indian states for ages. This mighty river runs for 2880 km through China, India, and Bangladesh. Every year the Northeastern state of Assam experiences huge losses due to devastating floods in the river Brahmaputra. Tinsukia Town is located in the upper reaches of River Brahmaputra in the state of Assam which experiences significant damage due to the floods during monsoon season.
The high intensity of floods in the Brahmaputra River and the steep topography of the region makes the problem more complex and severe. To provide a safeguard against the frequent floods in the region, the banks of the river Brahmaputra near Tinsukia were required to be protected at a few stretches while providing sustainable anti-erosion measures.
In river training projects, the conventional use of large boulders poses significant challenges. The mobilization of substantial quantities within a limited contract period proves difficult and expensive. Furthermore, the extraction of such vast amounts of stones adversely impacts environmental equilibrium. The transportation and handling of these materials to the work site necessitate heavy machinery, adding logistical complexities.
TechFab India’s innovative approach offers a compelling alternative. Geotextile bags, filled with locally available sand, emerge as a cost-effective solution, particularly in soil erosion control. The work was carried out on the left bank of the Brahmaputra River for a total length of 700m (Approx.) where the river bank was dressed to a slope inclination of 2H:1V for the maximum protected bank height of 10m (Approx).
The Geotextile bags have been selected for river bank and bed protection. These structures, permeable in nature, not only prove economical but also effectively control sedimentation. By utilizing locally sourced materials, the project ensures sustainability while minimizing the environmental footprint associated with conventional methods. TechFab India’s geotextile bags solution stands out as an efficient, eco-friendly and economically viable choice for river bank protection in Tinsukia, Assam.
The project was completed successfully and performing to the intended purpose, to the satisfaction of the client and contractor. The implementation of Geotextile Bag successfully mitigated erosion, providing sustainable protection to Tinsukia’s river banks. The project showcased the efficacy of innovative geotextile solutions in challenging environments, ensuring the long-term resilience of the region’s vital ecosystems and infrastructure.
