Shillong, Meghalaya, India | National Highways Authority of India (NHAI)
There is a construction of a Reinforced Soil Slope at Shillong bypass (Meghalaya) connecting NH-40 and NH-44 with the application of geosynthetics in that region which has natural mountain terrain, deep valley at rare end side, with touch of natural green aesthetic and state of the art design & architecture.
Reinforcing soil slope at rare deep valley portion while preserving natural aesthetics is a challenge.
The reinforced soil slope & gabion retaining wall at toe has been proposed to slope elevated terrain in concurrence to design, consultant & architect. Their joint views have taken into many revisions before arriving at practicable solution which encircles the aesthetic view with as a final outcome at rare deep valley portion, based on the submission of M/s Best Geotechnics.
Keeping the above perspective, the scope work of TechFab India Industries Ltd., was to meet:
Design
Supply of Techgrid Geogrids, Metal Gabion, Nonwoven Geo textile.
Supervision.
Salient features:
Soil Reinforcement: Techgrid Geogrid (Knitted & PVC coated Polyester Geogrid).
Facing: Wrap-around Geogrid facing for Reinforced Soil Slope, with Geotextile bags filled
with sand. TechFab Metal Gabion as toe wall.
Design Methodology : Ressa software for analysis.
TechFab India Scope: * Design
Supply of TechGrid Geogrid, Metal Gabion, Nonwoven Geotextile
Supervision
The bypass alignment passed through natural mountain terrain with a deep valley at the rear end. To ensure slope stability while preserving the natural green aesthetics, a reinforced soil slope was required.
Reinforcing the slope at the deep valley portion was complex due to steep terrain, geological conditions, and the need to balance structural safety with environmental aesthetics.
TechFab India delivered a composite reinforced soil slope system:
Design analysis was carried out using RESSA software to ensure safety and performance.
The reinforced soil slope was successfully constructed, ensuring slope stability, erosion control, and preservation of the natural landscape. The solution met NHAI’s requirements and enhanced the scenic value of the Shillong Bypass.
By integrating geogrids, gabions, geotextiles, and advanced design tools, TechFab India demonstrated its ability to deliver sustainable, aesthetically pleasing, and technically sound solutions for challenging highway projects in mountainous terrain.
