MUMBAI COASTAL ROAD PROJECT
| Project Name: | Mumbai Costal Road Project – Package IV |
| Authority: | Municipal Corporation of Greater Mumbai |
| Client: | Lombardi Engineering Group |
| Location: | Mumbai, Maharashtra (India) |
Project Overview
- The Mumbai Coastal Road features a submerged tunnel in Package IV.
- The tunnel consists of a 3,000 m long twin tube with two lanes and an emergency lane (expanded to three lanes during high traffic intensity).
- It includes cross passages every 300 m and one pump shaft.
- For excavation, a Hydro shield-TBM will be used.
- The road is situated approximately 22 m below sea level.
- Beneath Malabar Hill, the overburden at the crown reaches up to 70 m (along the shore).
- The tunnel intrados has a diameter of 11 m and utilizes precast segments (referred to as “universal segments”).
- Prefabricated, walkable technical canals are present at each invert.
- The cut & cover intrados section measures 11 x 6.5 meters.
- Ramps connect the project to the bridge viaducts in the north and the existing road network in the south, along Marine Drive.
Scope of Work
Design of Temporary works for Mumbai Coastal Road Project.
- Review & Assessment of Proposed Supports System
- Design & detailing of Temporary Works
- Design of TBM Launching Frame
- Design of Launching & Retrieval Shafts
- Design of Temporary Ring Supports
- Design of Water Tank
Achievement
- Use of circular struts reduced cost by 10%. Large span around 30m without any king post of runner beams. Thus, having more working space.