Zakládání staveb, a. s. - Siphon relay and modification of shipping route in Chvatěruby class=" view- no-layout no-task ltr">

Siphon relay and modification of shipping route in Chvatěruby

Siphon relay and modification of shipping route in Chvatěruby

Changes to a narrow shipping route between Dolánky and Kralupy nad Vltavou should contribute to significant improvement of navigation conditions on this stretch of the Vltava River. The modification works included riverbed dredging as well as corrections and strengthening of the riverbanks. Within the framework of this construction an important investment was made into relaying of the original water siphon on a river km 25,271 as this siphon had been placed in an insufficient depth under the riverbed as well as it had not allowed its proposed deepening. The new route for the siphon was designed parallel with the old one in the distance of approx. 15-20m downstream.The siphon was designed as retracted through its route in the riverbed and it consisted of two pipelines. The siphon assembly was carried out on the left riverbank while its retraction with the use of apress was realised on the opposite riverbank.


Modification of the riverbed

Securing the right bank with permanent sheet pilewalls: 374 m2
Strengthening of the right bank, corrections with quarry stone pavement, resp. : backfill: 658 m2, 1412 m3
Lagoons on the left bank: new dikes and strengthening withquarry stone : 4019 m3
Removal of the old steel siphon 2x DN 800: 120 m
Hard dredging including disposal by ships: 9018 m3

Siphon relay

Supply and assembly of ductile iron pipeline Saint Gobain: 2x DN 800 2x195 nm
Anchored temporary sheet piles for the trenchsheeting: 1500 m²
Trench digging including disposal: 6500 m3
Siphon retraction across the river and its placement into the trench: 119 m
Siphon backfills and strengthening of the riverbank with quarry stone: 3500 m3
Strengthening of the right bank with quarry stone pavement: 350 m2


OHL ŽS Co., Burešova 938/17, Brno


PDirectorate of Waterways Czech Republic, Vinohradská 184/2396, Praha 3



4,67 mil. EUR 2/2009 – 11/2010

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  • Type of construction : Hydrotechnical projects
  • Country : Czech Republic
  • Financial volume : 100– more mil. Kč
  • Completion date : 2006-2010
  • Supporting technologies : Driving

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Zakládání staveb, a. s.,
Dobronická č.p. 1371
148 26 Praha 4


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Zakládání staveb, a. s.
K Jezu 1, P. S. 21
143 01 Praha 4 - Modřany

ID Number: 49241567
Tax ID Number: CZ49241567

Company registered in the Commercial Register at the Municipal Court in Prague, Section B, Insert 2139.

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