All dams require a river diversion during construction and many of these are in
tunnel. For the majority of new dams with which I have been associated I have
also been responsible for designing the tunnel and lining, including the rock
mechanics aspects of the work.
Tunnels have ranged in size from 3 m up to 13 m lined diameter. Some particular
examples are given below.
| UK |
2 |
5 |
Stabilisation of Cast Iron segmental lining - Design and construction
supervision |
| Thailand |
11.8 (lined) |
0.3 |
Power Tunnel design and construction supervision |
| Philipines |
13 |
1.5 |
Twin diversion tunnels - design |
| Philippines |
6 |
26 |
Transbasin tunnel design |
| Indonesia |
3 |
1 |
Diversion tunnel design and construction supervision |
| Indonesia |
4 |
1.2 |
Diversion tunnel design and construction supervision |
| Ukraine |
Up to 7m |
Total of 8 |
Tunnels and shafts for Pumped Storage Project Design review |
| Italy |
4.5m |
Total of 12 |
Redesign of 2 No tunnels following collapse during excavation in very complicated geology and tectonically active area |
