Very limited space was available at the base of the valley for constructing such tall retaining structures using traditional method. Innovative idea was “need of the hour” to suit the requirement of stabilising the existing unstable slope and to widen the road. This prompted Terre Armée India to use their innovative TerraLink® technology (shored or composite Reinforced Earth® structure). TerraLink® was designed after conducting a detailed global as well as compound stability check and finite element modelling of the collapsed slope to provide a robust and engineered structure, which can withstand differential settlement and impact from dynamic loads. The use of mechanical connection system between the soil reinforcement and soil nails ensures greater stability of the shored Reinforced Earth® structure and superior performance under extreme loading conditions. TerraLink® also optimized the cut and fill volume in this project. Internal and external drainage was also improved to channelize the run-off in the area.
The S2 Structure, which stands supreme at 102.8 meters, makes Project Tindharia the world’s tallest Reinforced Earth® structure and an acme of tall, steep slope soil reinforcement engineering. The innovative and sustainable TerraLink® solution used in this project has resulted in the widening of existing roadway, slope stabilisation, drainage improvement and rehabilitation of the massive landslide at Tindharia.
This project’s landmark success will surely instil greater confidence amongst the Engineering Fraternity in India as well as in various parts of the world and encourage them to take up more complex and challenging civil engineering projects like this in the future.