Urban Infrastructure
PIPE ARCH
The pipe roof/arch method involves the use of micro-tunnelling / jacking / other trenchless
machine to install a series of interlocking steel pipes which formed a temporary support
system, below which the final section of the box culvert structures is then mined and
constructed.
A typical example is crossings beneath the railway lines or pedestrian tunnels / underpasses.
The Method
A shield consisting of several pipes are installed next to one another by using classic pipe
jacking method which acts as a support medium. Under this support actual tunnel is excavated
using mining techniques
A number of micro-tunnelling drills are carried out during which mostly steel pipes are
introduced which forms a protective frame for later tunnel
General Design Considerations
- Sensitive Settlements
- General Soil Parameters and Soil Improvements
- Geo Technical Monitoring
- Jacking and other tolerances..
Key Considerations
- Geo Technical aspects including soil interaction between pipe roof and surrounding ground
- Face stability during excavation
- Structural aspects of pipe roof (Design of pipes and steel frames)
- Extent of protection to existing services
- Risk assessment and hazard analysis
- Design of Interlocking Steel Pipes (Generally T Beams are used)
- Alternative designs in case of excessive settlements due to obstructions
Advantages
- The tunnel(s) can be excavated without settlement in geology
- Changes in the altitudes of surface above can thus be avoided
- Machine can be drawn back after the drill has been completed
UNDERGROUND GOODS / CARGO TRANSPORTATION
Underground Freight Transportation involves transportation of goods or cargo through
automated transportation system or capsules. The cargo is transported via underground
tunnels or pipelines. Hence this system is independent of surface traffic congestion and
weather conditions and has the capacity to transfer intra and inter-city cargo.
Research indicates:
- 5000 people die from the vehicle fumes annually in UK.
- In USA 53000 early deaths occur because of the fumes.
- Unpredictable long delays due to heavy traffic are encountered almost every day.
- Traffic fumes are one of the major source of air pollution.
FEATURES
- 5th transport alternative after rail, road, air and water
- Safe and economical to carry goods on time
- Viable option for many urbanized cities
ADVANTAGES
- Very effective even with lower speeds since the caps are unaffected by surface conditions
- Environment friendly as there is no noise and pollution
- Although designed for the transportation of goods but can be used for multi purposes in future
- Cargo tube offers the option for both intra and inter-city goods transport
- Very effective even with lower speeds since the caps are unaffected by surface conditions
- Environment friendly as there is no noise and pollution
- Although designed for the transportation of goods but can be used for multi purposes in future
SIMILAR WORKS
USA
SWITZERLAND
GERMANY
NETHERLANDS
NETHERLANDS
INTERNATIONAL SOCIETY ON UNDERGROUND FREIGHT TRANSPORTATION SYSTEM (ISUFT)
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