Waldau Canal, Worblaufen, Microtunneling DN 1200
Three sections of the Waldau Canal to the ARA Worblental were largely replaced between shafts KS 7.68 and 7.106 using microtunnelling. It crosses, among others, under the River Worble, RBS rail tracks and three buildings. The existing concrete DN 1000 pipe from 1915 was replaced.
Length:
- Stage 2: approx. 200 m
- Stage 3: approx. 230 m
- Stage 4: approx. 260 m
Main Data
- Nominal diameter: 1,200 mm / 1,500 mm
- Pipe material: Reinforced concrete, single-layer, 145 mm
- Length of pipe: approx. 690 m
- Advance rate: approx. 8 m/d; max. 27 m/d in single shift system
- Gradient: min. 4.85 % ; max. 24.8 %
- Covering: min. 1.10 m ; max. 4.60 m
- Radii: horizontal 175 m
- Flow capacity: 0.3–2.0 m3/s
- Geology: Groundwater, rock, molasse, moraine, loose rock
Client
ARA Worblental Municipal Association
Consultant
IUB Engineering AG in consortium
Construction period
2006-2007
Construction costs
CHF 5 Mio.
Scope of services
- Preliminary project and detailed project
- Construction project
- Tendering and bid evaluaton
- Implementation
- Construction supervision