Zakládání staveb, a. s. - Březno near Chomutov – dealing with a cave-in within a railway tunnel area class=" view- no-layout no-task ltr">

Březno near Chomutov – dealing with a cave-in within a railway tunnel area


Březno near Chomutov – dealing with a cave-in within a railway tunnel area

A cave-in occurred during tunnel driving works at the level of 33 m below the surface and required extensive repair works. After carrying out infilling groutings from the surface a system of seven diaphragms made of secant pile walls was installed in the caved- in area together with a circular shaft made of secant piles in place of a future exit shaft also designed within the caved-in area. Tunnel driving works were gradually carried out through these division diaphragms under the protection of micropile umbrellas.

Measures

Secant piles 35–39 m long, diam. 1180 mm: 7718 m
Micropiles 70 mm: 17 660 m
Micropiles 108 mm: 3254 m
Jet grouting diam. 50 cm: 635 m
Infilling grouting: 905 m
Earth works: 15 580 m3

Client

Metrostav, div. 5, Koželužská 2246, Praha 8-Libeň

Investor

Severočeské doly Chomutov, a. s., B. Němcové 5359

Price

Year

3,5 mil. EUR 2004-2006



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  • Type of construction : Traffic projects
  • Country : Czech Republic
  • Financial volume : 50–100 mil. Kč
  • Completion date : 2006-2010
  • Supporting technologies : Piles

Basic data
Administrative address

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

 

E-mail general: info@zakladani.cz
E-mail for offers: zakazka@zakladani.cz
Data box - ID: 44utdij

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Reception desk

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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