- Upgrade of Dortmund-Ems canal
Datteln Waterways Building Department (WNA) has upgraded an 8 km section of the Dortmund-Ems canal to waterways class Vb using the embankment method (trapeze profile). This section has canal side dams up to approx. 10 m high, trenches up to 20 m deep and several crossing structures.
- Existing revetments - how secure are they?
Barely visible - but essential for the waterways. This succinctly describes the large discrepancy between the perception of revetments on one hand and their significance for bank protection purposes on the other. The background: so that waterways remain permanently safe and easy to navigate, their bank slopes must be protected from natural and ship-induced waves and flow.
At the cut of the first sod in 2008 for the construction of the new lock at Bolzum on the Hildesheim branch canal, all geotechnical aspects had already been subject to a comprehensive ground investigation: all in all no easy task, for, as the BAW discovered, the ground conditions at the Bolzum site were extremely complex.