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Sequedin - Deule

At Sequedin the River Deule has been widened.  Locally, just before reaching the Port of Lille, the canal narrows due to the remains of a former power station.

 
 
 
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Along this stretch a new quay wall has been constructed.  Our contract involved the removal of surplus soil surrounding this new quay wall and incorporating either end of the quay wall into the existing riverbank.

 

The main problem consisted of the removal of the old foundations of the power plant and two concrete abutments of a former pedestrian bridge.  About 5.000m³ of concrete has been demolished.

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After removal of the concrete foundation, earth works started in earnest including the construction of the river banks and its protection.

 
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After dry-removal of the soil the old retaining wall was removed.  Its steel sheet piles have been taken out using a pontoon-mounted telescopic crane.

 
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Finally the remainder of the soil has been dredged and disposed of using barges.  In all 70.000m³ of soil has been removed.

 
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To store this soil an old fill area at the village of Emmerin was re-opened.  Its bunds were raised using dry excavated material from Sequedin as well as locally found soil.  In the final stage of the project dredged material from Sequedin was dumped into this area.

 
 
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