| Task / Description |
Slow |
Ave |
Fast |
Units |
| Standard Advance Method, used on tunnels with max diameter |
- |
7.0 |
- |
m |
| Half Face Advance Method, used on tunnels with max diameter |
- |
10.0 |
- |
m |
| Double side Drift Advance Method, used on tunnels with diameter over |
- |
10.0 |
- |
m |
| Double side Drift Advance Method, used on tunnels with diameter over |
- |
10.0 |
- |
m |
| Excavation, London Clay, internal diameter under 7.0m |
2.5 |
2.9 |
3.2 |
m/day |
| Excavation, London Clay, internal diameter 7.0-10.0m |
1.5 |
2.0 |
2.5 |
m/day |
| Excavation, London Clay, internal diameter over 10.0m |
1.0 |
1.3 |
1.5 |
m/day |
| Excavation, Woolwich/Reading Beds, internal diameter 2.0-7.0m |
1.5 |
1.8 |
2.0 |
m/day |
| Excavation, Woolwich/Reading Beds, internal diameter 7.0-10.0m |
- |
1.5 |
- |
m/day |
| Excavation, Woolwich/Reading Beds, internal diameter over 10.0m |
- |
1.0 |
1.5 |
m/day |
| Excavation, London Clay, Inclined Tunnels, diameter 2.0-7.0m |
1.5 |
2.0 |
3.2 |
m/day |
| Excavation, London Clay, Inclined Tunnels, diameter 7.0-10.0m |
0.5 |
1.0 |
2.2 |
m/day |
| Excavation, London Clay, Vertical Shafts, diameter 2.0-9.0m |
1.0 |
1.5 |
2.2 |
m/day |
| Excavation, London Clay, Vertical Shafts, diameter 9.0-15.0m |
0.5 |
1.0 |
2.6 |
m/day |
| Excavation, London Clay, Circulation Halls |
0.8 |
1.0 |
1.2 |
m of circumf/day |
| Excavation, London Clay, Junction Excavation |
- |
0.2 |
- |
m/day |
| Mucking Capacity, 1 access with 2 crews |
190.0 |
225.0 |
279.0 |
m3/day |
| Mucking Capacity, 1 access with 4 crews |
255.0 |
300.0 |
366.0 |
m3/day |
| Mucking Capacity, 2 access with 4 crews |
382.0 |
450.0 |
549.0 |
m3/day |
| Sprayed Secondary Lining, Tunnels, diameter under 6.5m |
2.1 |
2.5 |
2.8 |
m/day |
| Sprayed Secondary Lining, Tunnels, diameter over 6.5m |
1.5 |
2.0 |
2.4 |
m/day |
| Sprayed Secondary Lining, Inclined Tunnels, diameter under 6.5m |
1.5 |
2.0 |
2.3 |
m/day |
| Sprayed Secondary Lining, Inclined Tunnels, diameter over 6.5m |
1.0 |
1.5 |
1.9 |
m/day |
| Sprayed Secondary Lining, Vertical Shafts, diameter under 6.5m |
1.8 |
2.0 |
2.5 |
m/day |
| Sprayed Secondary Lining, Vertical Shafts, diameter over 6.5m |
2.2 |
2.5 |
3.1 |
m/day |
| Sprayed Secondary Lining, Circulation Halls, diameter under 11.0m |
- |
2.0 |
2.3 |
m/day |
| Sprayed Secondary Lining, Intermediate Landing Tunnels with columns |
1.7 |
2.0 |
2.1 |
m/day |
| Sprayed Secondary Lining, Intermediate Landing Tunnels without columns |
1.6 |
2.1 |
2.3 |
m/day |
| Sprayed Secondary Lining, Tunnel Junctions |
- |
0.2 |
0.3 |
m/day |
| Insitu Permanent Lining, 12m bays, 350-400mm reinforced with PCV backing |
- |
8.4 |
12.0 |
m/day |
| Insitu Permanent Lining, extra over excavate/lining time to allow for permanent lining |
- |
25.0 |
- |
% |
| Excavate and Line Cycle Time , Running Tunnels |
3.2 |
4.0 |
4.9 |
m/day |
| Excavate and Line Cycle Time, Station Access Adits |
3.3 |
3.9 |
4.2 |
m/day |
| Excavate and Line Cycle Time, Concourse Tunnels |
2.2 |
2.5 |
2.7 |
m/day |
| Excavate and Line Cycle Time, Escalator Tunnels |
1.2 |
1.5 |
1.7 |
m/day |
