A rapid transit system that operates below ground level, typically in tunnels, is known as an underground metro. Although there are many ways to build an underground metro system, the cut-and-cover approach is one of the most popular. We will look at the cut-and-cover method, its benefits, and the steps involved in its construction in this article.
In this method, a trench is excavated following the metro line’s path, and then a concrete box structure is built inside the trench to house the metro station and tracks. The surface is then restored to its original condition by filling the trench with soil and pavement.
The cut-and-cover method has two variations: top-down and bottom-up. The roof slab of the station is built first when using the top-down method, which involves staged excavation. The station walls and floor are then constructed as the excavation under the roof slab continues.
The disruption to surface traffic and utilities is reduced by using this technique. The station walls, floor, and roof are built from the bottom up using the bottom-up method, which involves performing the excavation in one go. While this strategy is more time and space intensive than the top-down approach, it is also quicker and less expensive.
Advantages of the Cut and Cover Method
Cost-effectiveness:
The cut and cover procedure is a well-liked option for urban areas with complicated subsurface conditions because it is typically more affordable than alternative ways. It is more accessible and less expensive because it requires fewer specialised tools and resources.
Flexibility in design:
The underground structure’s design is more flexible when using the cut-and-cover technique. Changes in alignment, station placements, and linkages to existing infrastructure can be accommodated more easily throughout the construction process. This adaptability allows for greater urban landscape integration and minimises interruptions to the already existing cityscape.
Underground metro systems have been built all over the world using the cut-and-cover technique. For densely populated urban regions, its affordability, architectural flexibility, and relative simplicity make it a desirable option. By using this technique, communities can increase the number of transportation options available to inhabitants, ease traffic congestion, and expand their transportation networks. We may anticipate more developments in the cut-and-cover method, which will eventually result in even more effective and creative underground metro systems as a technology and building methods continue to advance.
Driving India’s transportation infrastructure, we excel in metro projects. With 4,500+ lane km of roads and 100+ km of elevated and underground metro rail, Shapoorji Pallonji is at the forefront. As trailblazers, we received the International World Quality Commitment Award, being the first Indian company to do so. Notable achievements include the Vallarpadam Rail Bridge, India’s longest railway bridge with a 4.62 km elevated structure built in a record time of 27 months. We also constructed the Nagpur Metro, featuring Asia’s longest double-decker viaduct (5.3 km) and India’s first four-level transportation corridor.
Originally published at http://realestateandepc.wordpress.com on July 4, 2023.
