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Olt Valley, km 239+500 - 246+500

Stabilizarea pantelor - Olt Valley, km 239+500 - 246+500 2015

A combination of two protection systems: active TECCO® SYSTEM³ is installed under the GBE-1000A rockfall barrier line providing passive protection

Stabilizarea pantelor - Olt Valley, km 239+500 - 246+500 2015

Superficial cleaning of the slope and drilling points stake-out

Stabilizarea pantelor - Olt Valley, km 239+500 - 246+500 2015

Drilling points stake-out in progress - visible national road DN7

Stabilizarea pantelor - Olt Valley, km 239+500 - 246+500 2015

Nails drilling directly through the high tensile mesh TECCO® 65/3

Stabilizarea pantelor - Olt Valley, km 239+500 - 246+500 2015

TECCO® SYSTEM³ installation - the high tensile mesh perfectly follows the slope morphology

Stabilizarea pantelor - Olt Valley, km 239+500 - 246+500 2015

Final positioning of the TECCO® SYSTEM³ splike plates type P33/40 and pre-tensioning of the mesh

Stabilizarea pantelor - Olt Valley, km 239+500 - 246+500 2015

Slope fully secured with TECCO® SYSTEM³

Stabilizarea pantelor - Olt Valley, km 239+500 - 246+500 2015

Another view of the fully stabilized slope

Stabilizarea pantelor - Olt Valley, km 239+500 - 246+500 2015

TECCO® SYSTEM³ almost invisible after installation - its open structure allows perfect drainage

 

Anul instalării

2015

Situația inițială

National road no. 7 (DN7) is one of the most important routes through the Carpathian Mountains, with heavy traffic. The Olt River runs parallel to the DN7 with high mountains, directly next to the road. In winter and spring rockfalls occur regularly. Also with unstable slopes, torrents and avalanches the risk of accidents was high. 

This project was originally developed with five concrete canopies for rockfall protection. Due to costs and other restrictions, a modern solution using high tensile steel wire was chosen. After further investigation, 23 dangerous areas were found and had to be protected using two types of protection systems: active and passive.

Geologie

  • Pe intreg tronsonul apar în aflorimente micașisturi și paragnaise apartinând Seriei de Cozia (Ante-proterozoic superior) și local pachete de gresii, acoperite la partea superioară de depozite deluviale (prafuri, nisipuri prăfoase cu pietrișuri și blocuri);
  • Versantul (în cea mai mare parte împâdurit) prezintă înclinări de până la 60 - 87° și este puternic tectonizat (frământări, cutări, microfisuri) și procese continue de dezagregare.
  • Înclinarea pachetelor de roci variază între 30 - 55° (mai mică pentru gresii și mai mare pentru micașisturi).

Descriere

4200 m² of TECCO® System and 560 m² of SPIDER® System were installed together with nailing as an active protection measure on the following sectors:

1. km 240+421 - 240+441

TECCO® G65/3

  • stabilized area: 260 m²
  • slope height: 15 m
  • nail pattern: 2.20 x 2.20 m
  • nail type: GEWI 28
  • nail length: 3 m

2. km 240+441 - 240+467

SPIDER® S3-130

  • stabilized area: 540 m²
  • slope height: 18 m
  • nail distance: 2.50 m
  • nail type: GEWI 32
  • nail length: 3 m

3. km 240+510 - 240+555

TECCO® G65/3

  • stabilized area: 585 m²
  • slope height: 13 m
  • nail pattern: 2.50 x 2.50 m
  • nail type: GEWI 32
  • nail length: 3 m

4. km 242+457 - 240+610

TECCO® G65/3

  • stabilized area: 1377 m²
  • slope height: 10 m
  • nail pattern: 2.10 x 2.10 m
  • nail type: GEWI 32
  • nail length: 3 m

5. km 242+859 - 242+940

TECCO® G65/3

  • stabilized area: 640 m²
  • slope height: 13 m
  • nail pattern: 2.20 x 2.20 m
  • nail type: GEWI 32
  • nail length: 3 m

6. km 243+099 - 243+179

TECCO® G65/3

  • stabilized area: 1260 m²
  • slope height: 14 m
  • nail pattern: 2.20 x 2.20 m
  • nail type: GEWI 32
  • nail length: 3 m

See also the other projects of Olt Valley.

Client

Compania Naţională de Administrare a Infrastructurii Rutiere (C.N.A.I.R.) – Directia Regionala de Drumuri si Poduri Craiova (D.R.D.P.)

Antreprenor

S.C. VECTRA SERVICE S.R.L.

Obiect protejat

Road

Protecţie împotriva coroziunii

GEOBRUGG SUPERCOATING

Tehnologie

S.C. IRIMAT Cons S.R.L. - Bucharest

Alte companii implicate

Sächsische Bau GmbH Dresden Germany, Sibiu Branch

Alte aplicaţii instalate

Protecţia împotriva căderilor de pietre, Protecţia împotriva torenţilor şi a alunecărilor superficiale

Contactul dvs. local

Roger Moor
   

Roger Moor

Country Manager Ost- und Zentralschweiz, Liechtenstein

Natural Hazards
Inginerie hidraulică
Minerit / Tuneluri
Geobrugg AG,Aachstrasse 11,8590 Romanshorn / Elveţia Country Manager Ost- und Zentralschweiz, Liechtenstein

E-mail

René Müller
   

René Müller

Country Manager Kantone AG BE BL BS FR GE JU NE SO VD VS

Natural Hazards
Inginerie hidraulică
Minerit / Tuneluri
Geobrugg AG,Industriestrasse 21,5200 Brugg / Elveţia Country Manager Kantone AG BE BL BS FR GE JU NE SO VD VS

E-mail

Alexander Bittendorfer
   

Alexander Bittendorfer

Project Manager Inspection Services

Natural Hazards
Geobrugg AG,Aachstrasse 11,8590 Romanshorn / Elveţia Project Manager Inspection Services

E-mail

Isacco Toffoletto
   

Isacco Toffoletto

Ticino Country Manager

Natural Hazards
Inginerie hidraulică
Minerit / Tuneluri
Geobrugg AG Ticino,Stabile Cometal, via Pizzante 7,6595 Riazzino / Elveţia Ticino Country Manager

E-mail