Parallel Bore Under The World’s Busiest Canal
September 1, 2022 by Joseph
Filed under Prime Blog
Tracking used: Surface Coil + AC Beacon for bore #1, Underground Coil for bore #2
Location: Rendsburg, Germany
Distance: bore #1: 378.49m, bore #2: 381.58m
Depth: 24m
Entry Angle: 10deg
Exit Angle: 10deg
Ground: Clay with some stones – Jetting Assembly
Pipeline: One pipe of 315mm and one of 355mm HDPE
Two new 20kV electric lines needed to cross underneath the Nord-Oostzeekanaal (also known as the Kiel Canal). The Kiel Canal is the world’s busiest #canal and the most frequented artificial waterway with an annual average of 32,000 ships (approx. 90 daily), transporting approximately 100 million tonnes of goods.
It is a 98km freshwater canal which links the North Sea at Brunsbüttel to the Baltic Sea at Kiel-Holtenau. An average of 250 nautical miles (460 km) is saved by using the Kiel Canal instead of going around the Jutland Peninsula. This not only saves time but also avoids storm-prone seas and having to pass through the Danish straits.
The #parallel bores were installed 10meters apart from each other. The first with a Surface Coil & #ACBeacon, the second with a wire installed inside the first bore/pipe. #ParaTrack2 was utilised on this job, demonstrating accurate parallel drilling as well as flexibility with Surface Tracking Systems, Surface Coil & AC Beacon.
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