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Estabilización de taludes - Laúca Hydro Power Plant 2017

Overview project site: Visible are the 600 meters long rockfall barrier RXI-050 and the slopes above partially covered with TECCO® SYSTEM³

Estabilización de taludes - Laúca Hydro Power Plant 2017

Top of the slope having the form of a cliff consisting tower structures

Estabilización de taludes - Laúca Hydro Power Plant 2017

Complicated self-drilling nails INCO 32 TD type installation. All works required rope access

Estabilización de taludes - Laúca Hydro Power Plant 2017

TECCO³ SYSTEM³ during installation works: drilling rig at the nearly vertical rockface with spike plates not yet tightened

Estabilización de taludes - Laúca Hydro Power Plant 2017

Installation of TECCO® SYSTEM³ on top of the slope having the form of a cliff

Estabilización de taludes - Laúca Hydro Power Plant 2017

Top of the slope stabilization with high tensile mesh TECCO® G65/3 and self-drilling nails INCO 32 TD

Estabilización de taludes - Laúca Hydro Power Plant 2017

TECCO® SYSTEM³ during installation: visible unrolling of the high tensile TECCO® G65/3 mesh on the slope

Estabilización de taludes - Laúca Hydro Power Plant 2017

Overview of the Laúca Hydro Power Plant construction site from above the RXI-050 rockfall barrier line

Estabilización de taludes - Laúca Hydro Power Plant 2017

TECCO® SYSTEM³ during installation: visible scale of the project

Estabilización de taludes - Laúca Hydro Power Plant 2017

RXI-050 rockfall barrier during installation: slope above is already protected with TECCO® SYSTEM³

Estabilización de taludes - Laúca Hydro Power Plant 2017

ROCCO® high tensile net fastening being a part of the rockfall barrier RXI-050

Estabilización de taludes - Laúca Hydro Power Plant 2017

Fully installed RXI-050 rockfall barrier. Slope above and below the barrier line is stabilized with the TECCO® SYSTEM³

Estabilización de taludes - Laúca Hydro Power Plant 2017

Overview of the installation site: visible geomorphology of the whole slope

Estabilización de taludes - Laúca Hydro Power Plant 2017

Aerial view of the construction site with a perfect overview of the rockfall barrier RXI-050 lines

 
 

Año de instalación

2017

Situación inicial

The Lauca Hydro Power Plant is located at the foot of a steep slope.  The slope requires stabilization to avoid causing damage to the facilities and equipment.

Geología

Project site consists of the following types of rock:

  • colluvium
  • silicified sandstone
  • porous sandstone
  • sandstone-siltstone transition
  • siltstone
  • gneiss from moderately fractured to strongly altered

Descripción

The following solutions were used for slope protection:

Top of the cliffs and tower shaped structures partially protected with TECCO® System:

  • high tensile mesh: TECCO® G65/3
  • self-drilling nails: INCO 32 TD
  • nail diameter: 32 mm
  • nail length: 4.0 m
  • nail pattern: 1.4 x 1.4 m

Tower shaped structures partially protected with TECCO® System and SPIDER® System:

  • high tensile mesh: TECCO® G65/3
  • high tensile net SPIDER S4-230
  • tower structure width below 3.0 m: nail pattern 1.4 x 1.4 m
  • tower structure width over 3.0 m: nail pattern 3.0 x 1.4 m

At the base of the tower structures:

  • high tensile mesh: TECCO® G65/3
  • self-drilling nails: INCO 32 TD
  • nail diameter: 32 mm
  • nail length: 4.0 m
  • nail pattern: 5.0 x 5.0 m

Regular area of the slope, between rockfall barrier line and top of the cliffs:

  • high tensile mesh: TECCO® G65/3
  • self-drilling nails: INCO 32 TD
  • nail diameter: 32 mm
  • nail length: 4.0 m
  • nail pattern: 5.0 x 5.0 m

Below the rockfall barrier, ca. 10 m high zone directly above slope cut:

  • high tensile mesh: TECCO® G65/3
  • self-drilling nails: INCO 32 TD
  • nail diameter: 32 mm
  • nail length: 8.0 m
  • nail pattern: 2.0 x 2.0 m

Self drilling nails were used due to  fractured condition of the  rock slope.

Passive rockfall protection barrier:

  • rockfall protection barrier RXI-050
  • height: 4 m
  • length: 600 m in 3 sections of: 180 m / 240 m / 180 m

 

País / Región

Angola

Cliente

Aproveitamento Hidroeléctrico de Laúca

Ingeniería

Intertechne Consultores S.A.

Otras empresas participantes

Tecnasol Fundações E Geotecnia, S.A.

Objeto protegido

Carretera, Edificio, Infraestructura, Otros

Protección contra la corrosión

GEOBRUGG SUPERCOATING

Su contacto local

René Müller
   

René Müller

Country Manager Western Switzerland

Protección contra riesgos naturales
Ingeniería hidráulica
Minería / Túneles
Sistema de Monitoreo
Geobrugg AG,Industriestrasse 21,5200 Brugg / Suiza Country Manager Western Switzerland

Correo electrónico

Olivia Sartorius
   

Olivia Sartorius

Project Manager Sales Eastern and Central Switzerland

Protección contra riesgos naturales
Ingeniería hidráulica
Minería / Túneles
Sistema de Monitoreo
Geobrugg AG Project Manager Sales Eastern and Central Switzerland

Correo electrónico

Matthias Denk, Msc. Env. Eng.
 

Matthias Denk

Protección contra riesgos naturales
Ingeniería hidráulica
Geobrugg AG,Aachstrasse 11,8590 Romanshorn / Suiza , Msc. Env. Eng.

Correo electrónico

Isacco Toffoletto
   

Isacco Toffoletto

Country Manager Southern Switzerland

Protección contra riesgos naturales
Ingeniería hidráulica
Minería / Túneles
Sistema de Monitoreo
Geobrugg AG Ticino,Via Brusada 5,6933 Muzzano / Suiza Country Manager Southern Switzerland

Correo electrónico