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Olt Valley, km 239+500 - 246+500

Consolidamento di versanti - 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

Consolidamento di versanti - Olt Valley, km 239+500 - 246+500 2015

Superficial cleaning of the slope and drilling points stake-out

Consolidamento di versanti - Olt Valley, km 239+500 - 246+500 2015

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

Consolidamento di versanti - Olt Valley, km 239+500 - 246+500 2015

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

Consolidamento di versanti - Olt Valley, km 239+500 - 246+500 2015

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

Consolidamento di versanti - 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

Consolidamento di versanti - Olt Valley, km 239+500 - 246+500 2015

Slope fully secured with TECCO® SYSTEM³

Consolidamento di versanti - Olt Valley, km 239+500 - 246+500 2015

Another view of the fully stabilized slope

Consolidamento di versanti - Olt Valley, km 239+500 - 246+500 2015

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

 

Anno di installazione

2015

Situazione iniziale

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.

Geologia

Along the whole section, mica and para gneiss appear in outcrops belonging to the series of the tail (the upper Proterozoic ante) and the local packet sandstone, covered at the top by diluvium deposit (dust, sand and gravel powder blocks).


Slopes (for the most part covered with forest) show inclinations of up to 60 - 80° and are strongly tectonized (kneading such, micro cracks) and continuous processes of disintegration. The angle of the rock packages varies between 30 - 55° (lower to higher sandstone and mica).

Descrizione

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.

Cliente

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

Contraente:

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

Oggetto protetto

Strada

Protezione dalla corrosione

GEOBRUGG SUPERCOATING

Progettazione:

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

Altre società partecipanti

Sächsische Bau GmbH Dresden Germany, Sibiu Branch

Altre applicazioni installate

Protezione da caduta massi, Protezione contro frane e colate detritiche

Il contatto locale

Kevin H. Coyle
 

Kevin H. Coyle

Regional Manager Northeast

Sistemi contro il dissesto idrogeologico
Ingegneria idraulica
Geobrugg North America, LLC,3 Beaudet Terr,Columbia CT 06237 / Stati Uniti Regional Manager Northeast

E-mail

Saleh Feidi
 

Saleh Feidi

Regional Manager California

Sistemi contro il dissesto idrogeologico
Ingegneria idraulica
Geobrugg North America, LLC,8921 Emperor Ave.,San Gabriel, California 91775 / Stati Uniti Regional Manager California

E-mail

John Kalejta
 

John Kalejta

Regional Manager Central US

Sistemi contro il dissesto idrogeologico
Ingegneria idraulica
Geobrugg North America, LLC,3215 67th Avenue Pl,Greeley CO 80634 / Stati Uniti Regional Manager Central US

E-mail

Bob Lyne
 

Bob Lyne

Regional Manager Southeast

Sistemi contro il dissesto idrogeologico
Ingegneria idraulica
Geobrugg North America, LLC,8004 Windspray Drive,Summerfield NC 27358 / Stati Uniti Regional Manager Southeast

E-mail

Pierce Runnels, Civil Engineer
   

Pierce Runnels

General Manager Geobrugg North America

Sistemi contro il dissesto idrogeologico
Geobrugg North America, LLC,22 Centro Algodones , Civil Engineer General Manager Geobrugg North America

E-mail

Tim Shevlin
 

Tim Shevlin

Sales Director

Sistemi contro il dissesto idrogeologico
Geobrugg North America, LLC,Salem OR 97302 / Stati Uniti Sales Director

E-mail