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Highway Tunnels
Highway Tunnels
Middle East
Sector:
Civils – transport tunnels.
This highway tunnel project comprised four tunnels with a combined length of 3.5km, excavated below a live highway and other civil infrastructure. The £270M value contract included large span crossover caverns and maintenance room complexes.
Geo-Design produced a detailed reference design for complex urban highway tunnels and caverns with spans up to 33m, with very shallow cover in bedded sedimentary rocks:
- Site investigation specification
Suitable ground investigation data to enable design. - Alignment geological model
Development of detailed geological models of the route alignment. - Detailed reference design
Construction sequence, temporary support, instrumentation and monitoring. - Structural design
Detailed design of the final lining in 2D and 3D. - Specification
Input to specification including ground risk mitigation and sharing.