myGeobrugg
Systems
Year of installation
2015
Initial situation
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.
Description
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.
Customer
Compania Naţională de Administrare a Infrastructurii Rutiere (C.N.A.I.R.) – Directia Regionala de Drumuri si Poduri Craiova (D.R.D.P.)
Contractor
S.C. VECTRA SERVICE S.R.L.
Protected object
Road
Corrosion protection
GEOBRUGG SUPERCOATING
Engineering
S.C. IRIMAT Cons S.R.L. - Bucharest
Other participating companies
Sächsische Bau GmbH Dresden Germany, Sibiu Branch
Other installed applications
Rockfall Protection, Debris Flow & Shallow Landslide Protection
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